diff --git a/test/Makefile b/test/Makefile
new file mode 100644
index 0000000..0d4d081
--- /dev/null
+++ b/test/Makefile
@@ -0,0 +1,27 @@
+#
+# Copyright 2018 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+.PHONY: utests
+
+utest:
+	@ nosetests utests
+
+COVERAGE_OPTS=--with-xcoverage --with-xunit --cover-package=voltha,common,ofagent --cover-html\
+              --cover-html-dir=tmp/cover
+
+utest-with-coverage:
+	@ nosetests $(COVERAGE_OPTS) utests
+
+# end file
diff --git a/test/__init__.py b/test/__init__.py
new file mode 100644
index 0000000..cfcdc97
--- /dev/null
+++ b/test/__init__.py
@@ -0,0 +1,15 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
\ No newline at end of file
diff --git a/test/unit/README.md b/test/unit/README.md
new file mode 100644
index 0000000..f85cfd4
--- /dev/null
+++ b/test/unit/README.md
@@ -0,0 +1,17 @@
+## VOLTHA TESTS
+
+Currently only unit tests are supported by the PyVoltha package
+* **Unit Tests**
+    *  These tests exercise the smallest testable parts of the code. They 
+    are designed to be fully automated and can be executed by a build 
+    machine (e.g. Jenkins).  
+    
+This document focuses on running the unit tests only.
+
+##### Running the utests
+* **Triggering all the utests as a batch run**: Unit tests under voltha can be run as follows:
+```
+cd /pyvoltha/
+. ./env.sh
+make utest
+```
diff --git a/test/unit/__init__.py b/test/unit/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/test/unit/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/test/unit/common/__init__.py b/test/unit/common/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/test/unit/common/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/test/unit/common/test_event_bus.py b/test/unit/common/test_event_bus.py
new file mode 100644
index 0000000..be325e8
--- /dev/null
+++ b/test/unit/common/test_event_bus.py
@@ -0,0 +1,220 @@
+#
+# Copyright 2016 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import re
+
+from mock import Mock
+from mock import call
+from twisted.internet.defer import DeferredQueue, inlineCallbacks
+from twisted.trial.unittest import TestCase
+
+from pyvoltha.common.event_bus import EventBusClient, EventBus
+
+
+class TestEventBus(TestCase):
+
+    def test_subscribe(self):
+
+        ebc = EventBusClient()
+        sub = ebc.subscribe('news', lambda msg, topic: None)
+        self.assertEqual(len(ebc.list_subscribers()), 1)
+        self.assertEqual(len(ebc.list_subscribers('news')), 1)
+        self.assertEqual(len(ebc.list_subscribers('other')), 0)
+
+    def test_unsubscribe(self):
+
+        ebc = EventBusClient(EventBus())
+        sub = ebc.subscribe('news', lambda msg, topic: None)
+        ebc.unsubscribe(sub)
+        self.assertEqual(ebc.list_subscribers(), [])
+        self.assertEqual(ebc.list_subscribers('news'), [])
+
+    def test_simple_publish(self):
+
+        ebc = EventBusClient(EventBus())
+
+        mock = Mock()
+        ebc.subscribe('news', mock)
+
+        ebc.publish('news', 'message')
+
+        self.assertEqual(mock.call_count, 1)
+        mock.assert_called_with('news', 'message')
+
+    def test_topic_filtering(self):
+
+        ebc = EventBusClient(EventBus())
+
+        mock = Mock()
+        ebc.subscribe('news', mock)
+
+        ebc.publish('news', 'msg1')
+        ebc.publish('alerts', 'msg2')
+        ebc.publish('logs', 'msg3')
+
+        self.assertEqual(mock.call_count, 1)
+        mock.assert_called_with('news', 'msg1')
+
+    def test_multiple_subscribers(self):
+
+        ebc = EventBusClient(EventBus())
+
+        mock1 = Mock()
+        ebc.subscribe('news', mock1)
+
+        mock2 = Mock()
+        ebc.subscribe('alerts', mock2)
+
+        mock3 = Mock()
+        ebc.subscribe('logs', mock3)
+
+        mock4 = Mock()
+        ebc.subscribe('logs', mock4)
+
+        ebc.publish('news', 'msg1')
+        ebc.publish('alerts', 'msg2')
+        ebc.publish('logs', 'msg3')
+
+        self.assertEqual(mock1.call_count, 1)
+        mock1.assert_called_with('news', 'msg1')
+
+        self.assertEqual(mock2.call_count, 1)
+        mock2.assert_called_with('alerts', 'msg2')
+
+        self.assertEqual(mock3.call_count, 1)
+        mock3.assert_called_with('logs', 'msg3')
+
+        self.assertEqual(mock4.call_count, 1)
+        mock4.assert_called_with('logs', 'msg3')
+
+    def test_predicates(self):
+
+        ebc = EventBusClient(EventBus())
+
+        get_foos = Mock()
+        ebc.subscribe('', get_foos, lambda msg: msg.startswith('foo'))
+
+        get_bars = Mock()
+        ebc.subscribe('', get_bars, lambda msg: msg.endswith('bar'))
+
+        get_all = Mock()
+        ebc.subscribe('', get_all)
+
+        get_none = Mock()
+        ebc.subscribe('', get_none, lambda msg: msg.find('zoo') >= 0)
+
+        errored = Mock()
+        ebc.subscribe('', errored, lambda msg: 1/0)
+
+        ebc.publish('', 'foo')
+        ebc.publish('', 'foobar')
+        ebc.publish('', 'bar')
+
+        c = call
+
+        self.assertEqual(get_foos.call_count, 2)
+        get_foos.assert_has_calls([c('', 'foo'), c('', 'foobar')])
+
+        self.assertEqual(get_bars.call_count, 2)
+        get_bars.assert_has_calls([c('', 'foobar'), c('', 'bar')])
+
+        self.assertEqual(get_all.call_count, 3)
+        get_all.assert_has_calls([c('', 'foo'), c('', 'foobar'), c('', 'bar')])
+
+        get_none.assert_not_called()
+
+        errored.assert_not_called()
+
+    def test_wildcard_topic(self):
+
+        ebc = EventBusClient(EventBus())
+        subs = []
+
+        wildcard_sub = Mock()
+        subs.append(ebc.subscribe(re.compile(r'.*'), wildcard_sub))
+
+        prefix_sub = Mock()
+        subs.append(ebc.subscribe(re.compile(r'ham.*'), prefix_sub))
+
+        contains_sub = Mock()
+        subs.append(ebc.subscribe(re.compile(r'.*burg.*'), contains_sub))
+
+        ebc.publish('news', 1)
+        ebc.publish('hamsters', 2)
+        ebc.publish('hamburgers', 3)
+        ebc.publish('nonsense', 4)
+
+        c = call
+
+        self.assertEqual(wildcard_sub.call_count, 4)
+        wildcard_sub.assert_has_calls([
+            c('news', 1),
+            c('hamsters', 2),
+            c('hamburgers', 3),
+            c('nonsense', 4)])
+
+        self.assertEqual(prefix_sub.call_count, 2)
+        prefix_sub.assert_has_calls([
+            c('hamsters', 2),
+            c('hamburgers', 3)])
+
+        self.assertEqual(contains_sub.call_count, 1)
+        contains_sub.assert_has_calls([c('hamburgers', 3)])
+
+        for sub in subs:
+            ebc.unsubscribe(sub)
+
+        self.assertEqual(ebc.list_subscribers(), [])
+
+    @inlineCallbacks
+    def test_deferred_queue_receiver(self):
+
+        ebc = EventBus()
+
+        queue = DeferredQueue()
+
+        ebc.subscribe('', lambda _, msg: queue.put(msg))
+
+        for i in xrange(10):
+            ebc.publish('', i)
+
+        self.assertEqual(len(queue.pending), 10)
+        for i in xrange(10):
+            msg = yield queue.get()
+            self.assertEqual(msg, i)
+        self.assertEqual(len(queue.pending), 0)
+
+    def test_subscribers_that_unsubscribe_when_called(self):
+        # VOL-943 bug fix check
+        ebc = EventBusClient(EventBus())
+
+        class UnsubscribeWhenCalled(object):
+            def __init__(self):
+                self.subscription = ebc.subscribe('news', self.unsubscribe)
+                self.called = False
+
+            def unsubscribe(self, _topic, _msg):
+                self.called = True
+                ebc.unsubscribe(self.subscription)
+
+        ebc1 = UnsubscribeWhenCalled()
+        ebc2 = UnsubscribeWhenCalled()
+        ebc3 = UnsubscribeWhenCalled()
+
+        ebc.publish('news', 'msg1')
+
+        self.assertTrue(ebc1.called)
+        self.assertTrue(ebc2.called)
+        self.assertTrue(ebc3.called)
diff --git a/test/unit/common/utils/__init__.py b/test/unit/common/utils/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/test/unit/common/utils/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/test/unit/common/utils/test_bpf.py b/test/unit/common/utils/test_bpf.py
new file mode 100644
index 0000000..21a80da
--- /dev/null
+++ b/test/unit/common/utils/test_bpf.py
@@ -0,0 +1,48 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from unittest import TestCase, main
+
+from scapy.layers.l2 import Ether, Dot1Q
+
+from pyvoltha.adapters.common.frameio.frameio import BpfProgramFilter
+
+
+class TestBpf(TestCase):
+
+    def test_bpf1(self):
+        vid = 4090
+        pcp = 7
+        frame_match = 'ether[14:2] = 0x{:01x}{:03x}'.format(pcp << 1, vid)
+        filter = BpfProgramFilter(frame_match)
+        self.assertTrue(filter(str(Ether()/Dot1Q(prio=pcp, vlan=vid))))
+        self.assertFalse(filter(str(Ether()/Dot1Q(prio=pcp, vlan=4000))))
+
+    def test_bpf2(self):
+        vid1 = 4090
+        pcp1 = 7
+        frame_match_case1 = 'ether[14:2] = 0x{:01x}{:03x}'.format(
+            pcp1 << 1, vid1)
+
+        vid2 = 4000
+        frame_match_case2 = '(ether[14:2] & 0xfff) = 0x{:03x}'.format(vid2)
+
+        filter = BpfProgramFilter('{} or {}'.format(
+            frame_match_case1, frame_match_case2))
+        self.assertTrue(filter(str(Ether()/Dot1Q(prio=pcp1, vlan=vid1))))
+        self.assertTrue(filter(str(Ether()/Dot1Q(vlan=vid2))))
+        self.assertFalse(filter(str(Ether()/Dot1Q(vlan=4001))))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/common/utils/test_indexpool.py b/test/unit/common/utils/test_indexpool.py
new file mode 100644
index 0000000..7eb1050
--- /dev/null
+++ b/test/unit/common/utils/test_indexpool.py
@@ -0,0 +1,48 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from unittest import TestCase, main
+from pyvoltha.common.utils.indexpool import IndexPool
+
+class TestIndexPool(TestCase):
+    pool = IndexPool(8, 0)
+    def test_01_get_next(self):
+        self.assertEqual(self.pool.indices.bin, '00000000')
+        for i in range(8):
+            self.assertEqual(self.pool.get_next(), i)
+        #to check if there's any bit left after using all 8 bits
+        self.assertIsNone(self.pool.get_next())
+
+    def test_02_pre_allocate(self):
+        _pool2 = IndexPool(8, 0)
+        self.assertEqual(_pool2.indices.bin, '00000000')
+        _pool2.pre_allocate((0,1,2,))
+        self.assertEqual(_pool2.indices.bin, '11100000')
+
+    def test_03_release(self):
+        self.pool.release(5)
+        self.assertEqual(self.pool.indices.bin, '11111011')
+        self.pool.release(10)
+        self.assertEqual(self.pool.indices.bin, '11111011')
+        self.pool.release(0)
+        self.assertEqual(self.pool.indices.bin, '01111011')
+
+    def test_04_check_offset(self):
+        _offset = 5
+        self.pool = IndexPool(8, _offset)
+        for i in range(8):
+            self.assertEqual(self.pool.get_next(), _offset + i)
+
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/test/unit/common/utils/test_ordered_weakvalue_dict.py b/test/unit/common/utils/test_ordered_weakvalue_dict.py
new file mode 100644
index 0000000..a8ce47c
--- /dev/null
+++ b/test/unit/common/utils/test_ordered_weakvalue_dict.py
@@ -0,0 +1,51 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from unittest import TestCase, main
+
+from pyvoltha.common.utils.ordered_weakvalue_dict import OrderedWeakValueDict
+
+
+class O(object):
+    def __init__(self, a):
+        self.a = a
+
+
+class TestOrderedWeakValueDict(TestCase):
+
+    def test_standard_behavior(self):
+        holder = dict()  # a real dict so we can control which object real ref
+        def mk(k):
+            o = O(k)
+            holder[k] = o
+            return o
+        o = OrderedWeakValueDict((k, mk(k)) for k in xrange(10))
+        self.assertEqual(len(o), 10)
+        self.assertEqual(o[3].a, 3)
+        o[3] = mk(-3)
+        self.assertEqual(o[3].a, -3)
+        del o[3]
+        self.assertEqual(len(o), 9)
+        o[100] = mk(100)
+        self.assertEqual(len(o), 10)
+        self.assertEqual(o.keys(), [0, 1, 2, 4, 5, 6, 7, 8, 9, 100])
+
+        # remove a few items from the holder, they should be gone from o too
+        del holder[1]
+        del holder[5]
+        del holder[6]
+
+        self.assertEqual(o.keys(), [0, 2, 4, 7, 8, 9, 100])
+        self.assertEqual([v.a for v in o.values()], [0, 2, 4, 7, 8, 9, 100])
+
+
diff --git a/test/unit/extensions/__init__.py b/test/unit/extensions/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/test/unit/extensions/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/test/unit/extensions/omci/__init__.py b/test/unit/extensions/omci/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/test/unit/extensions/omci/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/test/unit/extensions/omci/mock/__init__.py b/test/unit/extensions/omci/mock/__init__.py
new file mode 100644
index 0000000..2792694
--- /dev/null
+++ b/test/unit/extensions/omci/mock/__init__.py
@@ -0,0 +1,24 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from nose.twistedtools import threaded_reactor, stop_reactor
+
+
+def setup_module():
+    threaded_reactor()
+
+
+def teardown_module():
+    stop_reactor()
diff --git a/test/unit/extensions/omci/mock/mock_adapter_agent.py b/test/unit/extensions/omci/mock/mock_adapter_agent.py
new file mode 100644
index 0000000..866eb67
--- /dev/null
+++ b/test/unit/extensions/omci/mock/mock_adapter_agent.py
@@ -0,0 +1,165 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# import binascii
+import structlog
+# from twisted.internet.defer import Deferred
+# from voltha.core.config.config_root import ConfigRoot
+# from pyvoltha.protos.voltha_pb2 import VolthaInstance
+# from pyvoltha.adapters.extensions.omci.omci_frame import OmciFrame
+
+class MockProxyAddress(object):
+    def __init__(self, device_id, pon_id, onu_id):
+        self.device_id = device_id  # Device ID of proxy (OLT)
+        self.onu_id = onu_id
+        self.onu_session_id = onu_id
+
+        self.channel_group_id = pon_id  # close enough for mock
+        self.channel_id = pon_id
+        self.channel_termination = pon_id
+
+
+class MockDevice(object):
+    def __init__(self, device_id, proxy_address=None, serial_number=None):
+        from pyvoltha.adapters.extensions.omci.omci_entities import entity_id_to_class_map
+        self.id = device_id
+        self.parent_id = None
+        self.proxy_address = proxy_address
+        self.serial_number = serial_number
+        self.me_map = entity_id_to_class_map
+
+
+class MockCore(object):
+    def __init__(self):
+        self.root = None   # ConfigRoot(VolthaInstance())
+
+    def get_proxy(self, path):
+        return self.root.get_proxy(path)
+
+
+class MockAdapterAgent(object):
+    """
+    Minimal class to handle adapter-agent needs in OpenOMCI. It can be
+    used by a mock OLT or ONU.
+
+    So that we do not have to duplicate the IAdapter functionality, just
+    the handler, the OLT and ONU handlers are derived from a mock Device
+    base class so that we can access the _devices map and get either a
+    Device to play with (like the real thing) or the associated handler
+    """
+    def __init__(self, d=None):
+        self.log = structlog.get_logger() 
+        self._devices = dict()      # device-id -> mock device
+        self.core = MockCore()
+        self.deferred = d
+        self.timeout_the_message = False
+
+    @property
+    def send_omci_defer(self):
+        return self.deferred
+        
+    @send_omci_defer.setter
+    def send_omci_defer(self, value):
+        self.deferred = value
+
+    @property
+    def name(self):
+        return "cig_mock_ont"
+    
+    def tearDown(self):
+        """Test case cleanup"""
+        for device in self._devices.itervalues():
+            device.tearDown()
+        self._devices.clear()
+
+    def add_device(self, device):
+        self._devices[device.id] = device
+
+    def add_child_device(self, parent_device, child_device):
+        # Set parent
+        child_device.parent_id = parent_device.id
+
+        # Add ONU serial number if PON and ONU enabled
+
+        if (child_device.enabled and
+                child_device.serial_number is not None and
+                child_device.proxy_address.channel_id in parent_device.enabled_pons):
+            parent_device.activated_onus.add(child_device.serial_number)
+
+        self.add_device(child_device)
+
+    def get_device(self, device_id):
+        return self._devices[device_id]
+
+    def get_child_device(self, parent_device_id, **kwargs):
+        onu_id = kwargs.pop('onu_id', None)
+        pon_id = kwargs.pop('pon_id', None)
+        if onu_id is None and pon_id is None:
+            return None
+
+        # Get all child devices with the same parent ID
+        children_ids = set(d.id for d in self._devices.itervalues()
+                           if d.parent_id == parent_device_id)
+
+        # Loop through all the child devices with this parent ID
+        for child_id in children_ids:
+            device = self.get_device(child_id)
+
+            # Does this child device match the passed in ONU ID?
+            found_onu_id = False
+            if onu_id is not None:
+                if device.proxy_address.onu_id == onu_id:
+                    found_onu_id = True
+
+            # Does this child device match the passed in SERIAL NUMBER?
+            found_pon_id = False
+            if pon_id is not None:
+                if device.proxy_address.channel_id == pon_id:
+                    found_pon_id = True
+            # Match ONU ID and PON ID
+            if onu_id is not None and pon_id is not None:
+                found = found_onu_id & found_pon_id
+            # Otherwise ONU ID or PON ID
+            else:
+                found = found_onu_id | found_pon_id
+
+            # Return the matched child device
+            if found:
+                return device
+
+        return None
+
+    def send_proxied_message(self, proxy_address, msg):
+        # Look up ONU handler and forward the message
+        self.log.debug("--> send_proxied_message", message=msg)
+        
+        # if proxy_address is None:
+        if self.deferred is not None and not self.timeout_the_message:
+            self.deferred.callback(msg)
+        #     return None
+
+        # olt_handler = self.get_device(proxy_address.device_id)
+
+        # if olt_handler is not None:
+        #    olt_handler.send_proxied_message(proxy_address, msg)
+
+    def receive_proxied_message(self, proxy_address, msg):
+        # Look up ONU handler and forward the message
+
+        onu_handler = self.get_child_device(proxy_address.device_id,
+                                            onu_id=proxy_address.onu_id,
+                                            pon_id=proxy_address.channel_id)
+        if onu_handler is not None:
+            onu_handler.receive_proxied_message(proxy_address, msg)
diff --git a/test/unit/extensions/omci/mock/mock_olt_handler.py b/test/unit/extensions/omci/mock/mock_olt_handler.py
new file mode 100644
index 0000000..142dbd8
--- /dev/null
+++ b/test/unit/extensions/omci/mock/mock_olt_handler.py
@@ -0,0 +1,108 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import sys
+from mock_adapter_agent import MockDevice
+from nose.twistedtools import reactor
+
+
+class MockOltHandler(MockDevice):
+    """
+    VERY Minimal class to handle OLT needs in OpenOMCI testing
+
+    So that we do not have to duplicate the IAdapter functionality, just
+    the handler, the OLT and ONU handlers are derived from a mock Device
+    base class so that we can access the _devices map and get either a
+    Device to play with (like the real thing) or the associated handler
+    """
+    def __init__(self, adapter_agent, device_id):
+        super(MockOltHandler, self).__init__(device_id)
+
+        self.device_id = device_id
+        self.device = self
+        self._adapter_agent = adapter_agent
+        self._num_tx = 0
+
+        ####################################################################
+        # NOTE: The following can be manipulated in your test case to modify the behaviour
+        #       of this mock.
+        #
+        # Note that activated ONUs are added during adapter add_child_device
+        # if the ONU handler associated is 'enabled'
+
+        self.enabled = True                # OLT is enabled/active
+        self.activated_onus = set()        # Activated ONU serial numbers
+        self.enabled_pons = range(0, 16)   # Enabled PONs
+        self.max_tx = sys.maxint           # Fail after this many tx requests
+        self.latency = 0.0                 # OMCI response latency (keep small)
+
+    # TODO: Implement minimal functionality
+
+    # TODO: Implement minimal functionality
+
+    def tearDown(self):
+        """Test case cleanup"""
+        pass
+
+    # Begin minimal set of needed IAdapter interfaces
+
+    def send_proxied_message(self, proxy_address, msg):
+        """Check various enabled flags and status and send if okay"""
+
+        if not self.enabled:
+            return None
+
+        pon_id = proxy_address.channel_id
+
+        if pon_id not in self.enabled_pons:
+            return None
+
+        # Look up ONU device ID.
+        onu_id = proxy_address.onu_id
+        onu_handler = self._adapter_agent.get_child_device(proxy_address.device_id,
+                                                           pon_id=pon_id,
+                                                           onu_id=onu_id)
+
+        if onu_handler is None or not onu_handler.enabled:
+            return None
+
+        onu_mock = onu_handler.onu_mock
+        if onu_mock is None or onu_mock.serial_number not in self.activated_onus:
+            return None
+
+        # And Tx success (silent discard for OMCI timeout testing)
+        if self._num_tx >= self.max_tx:
+            return None
+        self._num_tx += 1
+
+        response = onu_mock.rx_omci_frame(msg)
+
+        # Make async and add any requested latency. Bound it to less
+        # than 5 seconds since this is a unit test that need to be
+        # somewhat responsive
+
+        assert 0.0 <= self.latency <= 5, 'Best practice is latency <= 5 seconds'
+        if response is not None:
+            reactor.callLater(self.latency, self._deliver_proxy_message, proxy_address, response)
+
+    def _deliver_proxy_message(self, proxy_address, response):
+        from common.frameio.frameio import hexify
+        self._adapter_agent.receive_proxied_message(proxy_address,
+                                                    hexify(str(response)))
+
+    def receive_proxied_message(self, _, __):
+        assert False, 'This is never called on the OLT side of proxy messaging'
+
diff --git a/test/unit/extensions/omci/mock/mock_onu.py b/test/unit/extensions/omci/mock/mock_onu.py
new file mode 100644
index 0000000..e63c5cd
--- /dev/null
+++ b/test/unit/extensions/omci/mock/mock_onu.py
@@ -0,0 +1,283 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from pyvoltha.adapters.extensions.omci.omci_frame import OmciFrame
+from pyvoltha.adapters.extensions.omci.omci_defs import *
+from pyvoltha.adapters.extensions.omci.omci_entities import *
+from pyvoltha.adapters.extensions.omci.omci_messages import *
+
+# abbreviations
+OP = EntityOperations
+RC = ReasonCodes
+
+
+class MockOnu(object):
+    """
+    Minimal class that acts line an ONU. The Mock OLT handler will call into this
+    object with OMCI frames that it will respond to appropriately
+    """
+    def __init__(self, serial_number, adapter_agent, handler_id):
+        self.serial_number = serial_number
+        self._adapter_agent = adapter_agent     # TODO: Remove any unused attributes
+        self._handler_id = handler_id
+        self.mib_data_sync = 0                  # Assume at reboot!
+
+        # NOTE: when creating response frames, use the basic method of constructing
+        #       these frames as the encoding created is unit-tested elsewhere
+        self._omci_response = {
+            OP.Get.value: {
+                CircuitPack.class_id: {
+                    257: OmciFrame(transaction_id=0,  # Will get replaced
+                                   message_type=OmciGetResponse.message_id,
+                                   omci_message=OmciGetResponse(
+                                       entity_class=CircuitPack.class_id,
+                                       entity_id=0,
+                                       success_code=RC.Success.value,
+                                       attributes_mask=CircuitPack.mask_for('number_of_ports'),
+                                       data=OmciMaskedData('value',
+                                                           entity_class=CircuitPack.class_id,
+                                                           attributes_mask=CircuitPack.mask_for('number_of_ports'))
+                                   ))
+                },
+                # Additional OMCI GET request responses here if needed
+            },
+            OP.GetNext.value: {},
+            OP.Create.value: {
+                # TODO: Create some OMCI CREATE request responses here.
+
+                # def send_create_gal_ethernet_profile(self,
+                #                                      entity_id,
+                #                                      max_gem_payload_size):
+                #     frame = OmciFrame(
+                #         transaction_id=self.get_tx_id(),
+                #         message_type=OmciCreate.message_id,
+                #         omci_message=OmciCreate(
+                #             entity_class=GalEthernetProfile.class_id,
+                #             entity_id=entity_id,
+                #             data=dict(
+                #                 max_gem_payload_size=max_gem_payload_size
+                #             )
+                #         )
+                #     )
+                #     self.send_omci_message(frame)
+            },
+            OP.Set.value: {
+                # TODO: Create some OMCI SET request responses here.
+
+                # def send_set_admin_state(self,
+                #                          entity_id,
+                #                          admin_state):
+                #     data = dict(
+                #         administrative_state=admin_state
+                #     )
+                #     frame = OmciFrame(
+                #         transaction_id=self.get_tx_id(),
+                #         message_type=OmciSet.message_id,
+                #         omci_message=OmciSet(
+                #             entity_class=OntG.class_id,
+                #             entity_id=entity_id,
+                #             attributes_mask=OntG.mask_for(*data.keys()),
+                #             data=data
+                #         )
+                #     )
+                #     self.send_omci_message(frame)
+
+            },
+            OP.Delete.value: {
+                # TODO: Create some OMCI DELETE responses here.
+            },
+            OP.MibReset.value: {
+                OntData.class_id: {
+                    0: OmciFrame(transaction_id=0,  # Will get replaced
+                                 message_type=OmciMibResetResponse.message_id,
+                                 omci_message=OmciMibResetResponse(
+                                     entity_class=OntData.class_id,
+                                     entity_id=0,
+                                     success_code=RC.Success.value
+                                 ))
+                }
+            },
+            OP.MibUpload.value: {
+                OntData.class_id: {
+                    0: OmciFrame(transaction_id=0,  # Will get replaced
+                                 message_type=OmciMibUploadResponse.message_id,
+                                 omci_message=OmciMibUploadResponse(
+                                     entity_class=OntData.class_id,
+                                     entity_id=0,
+                                     number_of_commands=3  # Should match list size for MibUploadNext below
+                                 ))
+                }
+            },
+            # OP.MibUploadNext.value: {
+            #     OntData.class_id: {
+            #         0: [
+            #             OmciFrame(transaction_id=0,
+            #                       message_type=OmciMibUploadNextResponse.message_id,
+            #                       omci_message=OmciMibUploadNextResponse(
+            #                           entity_class=OntData.class_id,
+            #                           entity_id=0,
+            #                           object_entity_id=0,        # TODO: Pick one
+            #                           object_attributes_mask=0,  # TODO: Pick one
+            #                           object_data=None           # TODO: Pick one
+            #                       )),
+            #             OmciFrame(transaction_id=0,
+            #                       message_type=OmciMibUploadNextResponse.message_id,
+            #                       omci_message=OmciMibUploadNextResponse(
+            #                           entity_class=OntData.class_id,
+            #                           entity_id=0,
+            #                           object_entity_id=0,        # TODO: Pick one
+            #                           object_attributes_mask=0,  # TODO: Pick one
+            #                           object_data=None           # TODO: Pick one
+            #                       )),
+            #             OmciFrame(transaction_id=0,
+            #                       message_type=OmciMibUploadNextResponse.message_id,
+            #                       omci_message=OmciMibUploadNextResponse(
+            #                           entity_class=OntData.class_id,
+            #                           entity_id=0,
+            #                           object_entity_id=0,        # TODO: Pick one
+            #                           object_attributes_mask=0,  # TODO: Pick one
+            #                           object_data=None           # TODO: Pick one
+            #                       )),
+            #         ]
+            #     }
+            # },
+            OP.Reboot.value: {
+                OntData.class_id: {
+                    0: OmciFrame(transaction_id=0,  # Will get replaced
+                                 message_type=OmciRebootResponse.message_id,
+                                 omci_message=OmciRebootResponse(
+                                     entity_class=OntG.class_id,
+                                     entity_id=0,
+                                     success_code=RC.Success.value
+                                 ))
+                }
+            },
+        }
+        # TODO: Support Autonomous ONU messages as well
+
+    def tearDown(self):
+        """Test case cleanup"""
+        pass
+
+    def _request_to_response_type(self, message_type):
+        return {
+            OP.Create.value: OmciCreateResponse,
+            OP.Delete.value: OmciDeleteResponse,
+            OP.Set.value: OmciSetResponse,
+            OP.Get.value: OmciGetResponse,
+            OP.GetNext.value: OmciGetNextResponse,
+            OP.MibUpload.value: OmciMibUploadResponse,
+            OP.MibUploadNext.value: OmciMibUploadNextResponse,
+            OP.MibReset.value: OmciMibResetResponse,
+            OP.Reboot.value: OmciRebootResponse,
+        }.get(message_type & 0x1F, None)
+
+    def rx_omci_frame(self, msg):
+        try:
+            frame = OmciFrame(msg.decode('hex'))
+            response = None
+            response_type = self._request_to_response_type(frame.fields['message_type'])
+            transaction_id = frame.fields['transaction_id']
+
+            omci_message = frame.fields.get('omci_message')
+
+            class_id = omci_message.fields.get('entity_class') \
+                if omci_message is not None else None
+            instance_id = omci_message.fields.get('entity_id') \
+                if omci_message is not None else None
+
+            # Look up hardcode responses based on class and instance ID. If found
+            # return the response, otherwise send back an error
+
+            if response_type is None:
+                status = RC.ProcessingError.value
+            elif class_id is None:
+                status = RC.UnknownEntity.value
+            elif instance_id is None:
+                status = RC.UnknownInstance.value
+            else:
+                status = RC.Success.value
+                try:
+                    response_id = response_type.message_id & 0x1f
+                    response = self._omci_response[response_id][class_id][instance_id]
+
+                    if response_id == OP.MibUploadNext.value:
+                        # Special case. Need to get requested entry
+                        assert isinstance(response, list)
+                        pass
+                        pass
+                        pass
+                        pass
+
+                    if isinstance(omci_message, OmciGetNext):
+                        response = response[omci_message.fields['command_sequence_number']]
+
+                    if isinstance(response, dict):
+                        if response['failures'] > 0:
+                            response['failures'] -= 1
+                            return None
+                        else: response = response['frame']
+
+                    response.fields['transaction_id'] = transaction_id
+                    if 'success_code' in response.fields['omci_message'].fields:
+                        response.fields['omci_message'].fields['success_code'] = status
+
+                    if status == RC.Success.value:
+                        if response_type.message_id in [OmciCreateResponse.message_id,
+                                                        OmciDeleteResponse.message_id,
+                                                        OmciSetResponse.message_id]:
+                            self.mib_data_sync += 1
+                            if self.mib_data_sync > 255:
+                                self.mib_data_sync = 1
+                        elif response_type.message_id == OmciMibResetResponse.message_id:
+                            self.mib_data_sync = 0
+
+                except KeyError as e:
+                    bad_key = e.args[0]
+                    if bad_key == class_id:
+                        status = RC.UnknownEntity.value
+                    elif bad_key == instance_id:
+                        status = RC.UnknownInstance.value
+                    else:
+                        status = RC.ProcessingError.value
+
+            if status != RC.Success.value and \
+                    response_type not in [OmciMibUploadResponse,
+                                          OmciMibUploadNextResponse]:
+                response = OmciFrame(transaction_id=transaction_id,
+                                     message_type=response_type.message_id,
+                                     omci_message=response_type(
+                                         entity_class=class_id,
+                                         entity_id=instance_id,
+                                         success_code=status
+                                     ))
+            return response
+
+        except Exception as e:
+            pass
+
+    @property
+    def proxy_address(self, device_id='1'):
+        if self._proxy_address is None:
+            self._proxy_address = Device.ProxyAddress(
+                device_id=device_id,
+                channel_group_id=1,
+                channel_id=1,
+                channel_termination="XGSPON",
+                onu_id=20,
+                onu_session_id=1)
+
+        return self._proxy_address
+
diff --git a/test/unit/extensions/omci/mock/mock_onu_handler.py b/test/unit/extensions/omci/mock/mock_onu_handler.py
new file mode 100644
index 0000000..9ebe1f6
--- /dev/null
+++ b/test/unit/extensions/omci/mock/mock_onu_handler.py
@@ -0,0 +1,79 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from mock_adapter_agent import MockProxyAddress, MockDevice
+from pyvoltha.adapters.extensions.omci.omci_cc import *
+from pyvoltha.adapters.extensions.omci.omci_entities import entity_id_to_class_map
+
+
+class MockOnuHandler(MockDevice):
+    """
+    Minimal class to handle ONU needs in OpenOMCI testing
+
+    So that we do not have to duplicate the IAdapter functionality, just
+    the handler, the OLT and ONU handlers are derived from a mock Device
+    base class so that we can access the _devices map and get either a
+    Device to play with (like the real thing) or the associated handler
+    """
+    def __init__(self, adapter_agent, parent_id, device_id, pon_id, onu_id):
+
+        self.proxy_address = MockProxyAddress(parent_id, pon_id, onu_id)
+        super(MockOnuHandler, self).__init__(device_id, self.proxy_address)
+
+        self.device_id = device_id
+        self.device = self
+        self._adapter_agent = adapter_agent
+
+        self.onu_mock = None
+        self.omci_cc = OMCI_CC(adapter_agent, device_id, me_map=entity_id_to_class_map)
+
+        # Items that you can change to perform various test failures
+
+        self._enabled = True
+
+    def tearDown(self):
+        """Test case cleanup"""
+        if self.onu_mock is not None:
+            self.onu_mock.tearDown()
+        self.onu_mock = None
+
+    @property
+    def enabled(self):
+        return self._enabled
+
+    @enabled.setter
+    def enabled(self, value):
+        if self._enabled != value:
+            self._enabled = value
+            olt = self._adapter_agent.get_device(self.proxy_address.device_id)
+            if olt is not None and self.proxy_address.channel_id in olt.enabled_pons:
+                if self._enabled:
+                    olt.activated_onus.add(self.serial_number)
+                else:
+                    olt.activated_onus.discard(self.serial_number)
+
+    # Begin minimal set of needed IAdapter interfaces
+
+    # TODO: Implement minimal functionality
+
+    def send_proxied_message(self, proxy_address, msg):
+        assert False, 'OpenOMCI will implement this for the MOCK ONU'
+
+    def receive_proxied_message(self, _, msg):
+        # Rx of OMCI message from MOCK OLT
+
+        if self.omci_cc is not None and self.enabled:
+            self.omci_cc.receive_message(msg.decode('hex'))
diff --git a/test/unit/extensions/omci/mock/mock_task.py b/test/unit/extensions/omci/mock/mock_task.py
new file mode 100644
index 0000000..aad0c60
--- /dev/null
+++ b/test/unit/extensions/omci/mock/mock_task.py
@@ -0,0 +1,94 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from pyvoltha.adapters.extensions.omci.tasks.task import Task
+from pyvoltha.common.utils.asleep import asleep
+from twisted.internet.defer import inlineCallbacks, failure
+from twisted.internet import reactor
+
+
+class SimpleTask(Task):
+    def __init__(self, omci_agent, device_id,
+                 exclusive=True,
+                 success=True,
+                 delay=0,
+                 value=None,
+                 priority=Task.DEFAULT_PRIORITY,
+                 watchdog_timeout=Task.DEFAULT_WATCHDOG_SECS):
+        """
+        Class initialization
+
+        :param omci_agent: (OmciAdapterAgent) OMCI Adapter agent
+        :param device_id: (str) ONU Device ID
+        :param exclusive: (bool) True if the task should run by itself
+        :param success: (bool) True if the task should complete successfully
+        :param delay: (int/float) Time it takes the task to complete
+        :param priority (int) Priority of the task
+        :param watchdog_timeout (int or float) Watchdog timeout after task start
+        :param value: (various) The value (string, int, ...) to return if successful
+                                or an Exception to send to the errBack if 'success'
+                                is False
+        """
+        super(SimpleTask, self).__init__('Simple Mock Task',
+                                         omci_agent,
+                                         device_id,
+                                         exclusive=exclusive,
+                                         priority=priority,
+                                         watchdog_timeout=watchdog_timeout)
+        self._delay = delay
+        self._success = success
+        self._value = value
+        self._local_deferred = None
+
+    def cancel_deferred(self):
+        super(SimpleTask, self).cancel_deferred()
+
+        d, self._local_deferred = self._local_deferred, None
+        try:
+            if d is not None and not d.called:
+                d.cancel()
+        except:
+            pass
+
+    def start(self):
+        """
+        Start MIB Synchronization tasks
+        """
+        super(SimpleTask, self).start()
+        self._local_deferred = reactor.callLater(0, self.perform_task)
+
+    def stop(self):
+        """
+        Shutdown MIB Synchronization tasks
+        """
+        self.cancel_deferred()
+        super(SimpleTask, self).stop()
+
+    @inlineCallbacks
+    def perform_task(self):
+        """
+        Get the 'mib_data_sync' attribute of the ONU
+        """
+        try:
+            if self._delay > 0:
+                yield asleep(self._delay)
+
+            if self._success:
+                self.deferred.callback(self._value)
+
+            self.deferred.errback(failure.Failure(self._value))
+
+        except Exception as e:
+            self.deferred.errback(failure.Failure(e))
diff --git a/test/unit/extensions/omci/test_image_agent.py b/test/unit/extensions/omci/test_image_agent.py
new file mode 100644
index 0000000..a801d0a
--- /dev/null
+++ b/test/unit/extensions/omci/test_image_agent.py
@@ -0,0 +1,295 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import binascii
+import structlog
+from unittest import TestCase, TestSuite, skip
+from pyvoltha.adapters.extensions.omci.openomci_agent import OpenOMCIAgent
+from pyvoltha.adapters.extensions.omci.omci_entities import SoftwareImage
+from pyvoltha.adapters.extensions.omci.omci_frame import OmciFrame
+from pyvoltha.adapters.extensions.omci.omci_messages import \
+        OmciStartSoftwareDownload, OmciStartSoftwareDownloadResponse, \
+        OmciEndSoftwareDownload, OmciEndSoftwareDownloadResponse, \
+        OmciDownloadSection, OmciDownloadSectionLast, OmciDownloadSectionResponse, \
+        OmciActivateImage, OmciActivateImageResponse,  \
+        OmciCommitImage, OmciCommitImageResponse
+from pyvoltha.protos.voltha_pb2 import ImageDownload
+from pyvoltha.protos.device_pb2 import Device
+
+from tests.utests.voltha.extensions.omci.mock.mock_adapter_agent import MockAdapterAgent, MockCore
+from twisted.internet import reactor
+from twisted.internet.defer import Deferred
+from twisted.internet.epollreactor import EPollReactor
+from time import sleep
+
+class TestOmciDownload(TestCase):
+    # def __init__(self, device_id='1', image_file='/home/lcui/work/tmp/v_change.txt', **kwargs):
+    #     self.device_id = device_id
+    #     self.image_file = image_file
+    #     super(TestOmciDownload, self).__init__(**kwargs)
+    sw_dwld_resp = {
+        'tid': '0001',
+        'mid': '33',
+        'did': '0A',
+        'entity_class': '0007',
+        'entity_id'   : '0000',
+        'reason'      : '0000',
+        'window_size' : '001F',
+        'inst_num'    : '0001',
+        'inst_id'     : '0000',
+        'trailer'     : '00000028',
+        'mic'         : '00000000'
+    }
+    
+    # sw_dwld_resp = '0001330A000700000000001f010000'
+     
+    ### Test Functions ###
+    def sim_receive_start_sw_download_resp(self, tid, eid, r=0):
+        msg = OmciFrame(
+                    transaction_id=tid,
+                    message_type=OmciStartSoftwareDownloadResponse.message_id,
+                    omci_message=OmciStartSoftwareDownloadResponse(
+                        entity_class=0x7,
+                        entity_id=eid,
+                        result=r,
+                        window_size=0x1F,
+                        image_number=1,
+                        instance_id=eid
+                    )
+              )
+        self.device.omci_cc.receive_message(msg)
+
+    def sim_receive_download_section_resp(self, tid, eid, section, r=0):
+        msg = OmciFrame(
+                    transaction_id=tid,
+                    message_type=OmciDownloadSectionResponse.message_id,
+                    omci_message=OmciDownloadSectionResponse(
+                        entity_class=0x7,
+                        entity_id=eid,
+                        result=r,
+                        section_number=section
+                    )
+              )
+        self.device.omci_cc.receive_message(msg)
+
+    def sim_receive_end_sw_download_resp(self, tid, eid, r=0):
+        msg = OmciFrame(
+                    transaction_id=tid,
+                    message_type=OmciEndSoftwareDownloadResponse.message_id,
+                    omci_message=OmciEndSoftwareDownloadResponse(
+                        entity_class=0x7,
+                        entity_id=eid,
+                        result=r,
+                        image_number=0x1,
+                        instance_id=eid,
+                        result0=0x0
+                    )
+              )
+        self.device.omci_cc.receive_message(msg)
+
+    def sim_receive_activate_image_resp(self, tid, eid, r=0):
+        msg = OmciFrame(
+                    transaction_id=tid,
+                    message_type=OmciActivateImageResponse.message_id,
+                    omci_message=OmciActivateImageResponse(
+                        entity_class=0x7,
+                        entity_id=eid,
+                        result = r
+                    ))
+        self.device.omci_cc.receive_message(msg)
+
+    def sim_receive_commit_image_resp(self, tid, eid, r=0):
+        msg = OmciFrame(
+                    transaction_id=tid,
+                    message_type=OmciCommitImageResponse.message_id,
+                    omci_message=OmciCommitImageResponse(
+                        entity_class=0x7,
+                        entity_id=eid,
+                        result = r
+                    ))
+        self.device.omci_cc.receive_message(msg)
+        
+    def cb_after_send_omci(self, msg):
+        self.log.debug("cb_after_send_omci")
+        dmsg = OmciFrame(binascii.unhexlify(msg))
+        tid = dmsg.fields['transaction_id']
+        mid = dmsg.fields['message_type']
+        dmsg_body = dmsg.fields['omci_message']
+        eid = dmsg_body.fields['entity_id']
+
+        # print("%X" % dmsg.fields['transaction_id'])
+        # print("%X" % dmsg.fields['message_type'])
+        # print("%X" % OmciActivateImage.message_id)
+        # print("%X" % dmsg_body.fields['entity_id'])
+
+        if mid == OmciStartSoftwareDownload.message_id:
+            self.log.debug("response start download")
+            self.reactor.callLater(0, self.sim_receive_start_sw_download_resp, tid, eid)
+        elif mid == OmciEndSoftwareDownload.message_id:
+            self.log.debug("response end download")
+            if self._end_image_busy_try > 0:
+                self.reactor.callLater(0, self.sim_receive_end_sw_download_resp, tid, eid, r=6)
+                self._end_image_busy_try -= 1
+            else:
+                self.reactor.callLater(0, self.sim_receive_end_sw_download_resp, tid, eid)
+        elif mid == OmciDownloadSection.message_id:
+            self.log.debug("receive download section, not respond")
+        elif mid == OmciDownloadSectionLast.message_id:
+            self.log.debug("response download last section")
+            self.reactor.callLater(0, self.sim_receive_download_section_resp, tid, eid, 
+                                   section=dmsg_body.fields["section_number"])
+        elif mid == OmciActivateImage.message_id:
+            self.log.debug("response activate image")
+            if self._act_image_busy_try > 0:
+                self.reactor.callLater(0, self.sim_receive_activate_image_resp, tid, eid, r=6)
+                self._act_image_busy_try -= 1
+            else:
+                self.reactor.callLater(0, self.sim_receive_activate_image_resp, tid, eid)
+                self.reactor.callLater(2, self.device.image_agent.onu_bootup)
+        elif mid == OmciCommitImage.message_id:
+            self.log.debug("response commit image")
+            self.reactor.callLater(0, self.sim_receive_commit_image_resp, tid, eid)
+        else:
+            self.log.debug("Unsupported message type", message_type=mid)
+            
+        self.defer = Deferred()
+        self.defer.addCallback(self.cb_after_send_omci)
+        self.adapter_agent.send_omci_defer = self.defer
+        
+    def setUp(self):
+        self.log = structlog.get_logger()
+        self.log.debug("do setup")
+        self.device_id = '1'
+        self._image_dnld = ImageDownload()
+        self._image_dnld.id = '1'
+        self._image_dnld.name = 'switchd_1012'
+        # self._image_dnld.name = 'xgsont_4.4.4.006.img'
+        self._image_dnld.url = 'http://192.168.100.222:9090/load/4.4.4.006.img'
+        self._image_dnld.crc = 0
+        self._image_dnld.local_dir = '/home/lcui/work/tmp'
+        self._image_dnld.state = ImageDownload.DOWNLOAD_SUCCEEDED # ImageDownload.DOWNLOAD_UNKNOWN
+        self._end_image_busy_try = 2
+        self._act_image_busy_try = 0
+        # self.image_file = '/home/lcui/work/tmp/v_change.txt'
+        self.reactor = EPollReactor()
+        self.defer = Deferred()
+        self.adapter_agent = MockAdapterAgent(self.defer)
+        self.defer.addCallback(self.cb_after_send_omci)
+        pb2_dev = Device(id='1')
+        self.adapter_agent.add_device(pb2_dev)
+        self.core = self.adapter_agent.core
+        self.omci_agent = OpenOMCIAgent(self.core, clock=self.reactor)
+        self.device = self.omci_agent.add_device(self.device_id, self.adapter_agent)
+        self.omci_agent.start()
+        self.omci_agent.database.add('1')
+        self.omci_agent.database.set('1', SoftwareImage.class_id, 0, {"is_committed": 1, "is_active": 1, "is_valid": 1})
+        self.omci_agent.database.set('1', SoftwareImage.class_id, 1, {"is_committed": 0, "is_active": 0, "is_valid": 1})
+        
+    def tearDown(self):
+        self.log.debug("Test is Done")
+        self.omci_agent.database.remove('1')
+        self.device = None
+
+    def stop(self):
+        self.reactor.stop()
+        self.log.debug("stopped");
+
+    def get_omci_msg(self, *args, **kargs):
+        m = ''
+        for s in args:
+            m += s
+        m = m.ljust(80, '0')
+        return m + kargs['trailer'] + kargs['mic']
+
+    def sim_receive_sw_download_resp2(self):
+        r = self.get_omci_msg(self.sw_dwld_resp['tid'], self.sw_dwld_resp['mid'], 
+                              self.sw_dwld_resp['did'], self.sw_dwld_resp['entity_class'], 
+                              self.sw_dwld_resp['entity_id'], self.sw_dwld_resp['reason'], 
+                              self.sw_dwld_resp['window_size'], self.sw_dwld_resp['inst_num'], self.sw_dwld_resp['inst_id'], 
+                              trailer=self.sw_dwld_resp['trailer'], mic=self.sw_dwld_resp['mic'])
+        data = binascii.unhexlify(r)
+        #msg = OmciFrame(data)
+        #print(msg.fields['transaction_id'])
+        #print(msg.fields['omci'])
+        self.device.omci_cc.receive_message(data)
+
+    def sw_action_success(self, instance_id, device_id):
+        self.log.debug("Action Success", device_id=device_id, entity_id=instance_id)
+        self.reactor.callLater(0, self.onu_do_activate)
+        
+    def sw_action2_success(self, instance_id, device_id):
+        self.log.debug("Action2 Success", device_id=device_id, entity_id=instance_id)
+
+    def sw_action_fail(self, fail, device_id):
+        self.log.debug("Finally Failed", device_id=device_id)
+        self.log.debug(fail)
+        
+    # def test_onu_do_activate(self):
+    def onu_do_activate(self):
+        self.log.debug("do test_onu_do_activate") 
+        self.defer = self.device.do_onu_image_activate(self._image_dnld.name)
+        self.defer.addCallbacks(self.sw_action2_success, self.sw_action_fail, callbackArgs=(self.device_id,), errbackArgs=(self.device_id,))
+        self.reactor.callLater(100, self.stop)
+        # self.reactor.run()
+        
+    @skip("for Jenkins Verification")
+    def test_onu_do_software_upgrade(self):
+        self.log.debug("do test_onu_do_software_upgrade", download=self._image_dnld)
+        dr = self.omci_agent.database.query('1', SoftwareImage.class_id, 0, "is_committed")
+        self.defer = self.device.do_onu_software_download(self._image_dnld)
+        self.defer.addCallbacks(self.sw_action_success, self.sw_action_fail, callbackArgs=(self.device_id,), errbackArgs=(self.device_id,))
+        # self.defer.addCallbacks(self.sw_action_success, self.sw_action_fail) #, errbackArgs=(self.device_id,))
+        # self.reactor.callLater(1, self.sim_receive_start_sw_download_resp)
+        # self.reactor.callLater(12, self.stop)
+        self.reactor.run()
+        
+    @skip("Not used")
+    def test_omci_message(self):
+        self.log.debug("do test_omci_message") 
+        r = self.get_omci_msg(self.sw_dwld_resp['tid'], self.sw_dwld_resp['mid'], 
+                              self.sw_dwld_resp['did'], self.sw_dwld_resp['entity_class'], 
+                              self.sw_dwld_resp['entity_id'], self.sw_dwld_resp['reason'], 
+                              self.sw_dwld_resp['window_size'], self.sw_dwld_resp['inst_num'], self.sw_dwld_resp['inst_id'], 
+                              trailer=self.sw_dwld_resp['trailer'], mic=self.sw_dwld_resp['mic'])
+        data = binascii.unhexlify(r)
+        msg = OmciFrame(data)
+        self.log.debug(binascii.hexlify(str(msg)))
+        # print("%04X" % msg.fields['transaction_id'])
+        # print("%02X" % msg.fields['message_type'])
+        # print("%02X" % msg.fields['omci'])
+        # print("%X" % msg.fields['omci_message'])
+
+    @skip("Not used")
+    def test_omci_message2(self):
+        self.log.debug("do test_omci_message2") 
+        msg = OmciFrame(
+                    transaction_id=0x0001,
+                    message_type=OmciStartSoftwareDownloadResponse.message_id,
+                    omci_message=OmciStartSoftwareDownloadResponse(
+                        entity_class=0x7,
+                        entity_id=0x0,
+                        result=0x0,
+                        window_size=0x1F,
+                        image_number=1,
+                        instance_id=0
+                    )
+              )
+        self.log.debug(binascii.hexlify(str(msg)))
+        
+this_suite = TestSuite()
+# this_suite.addTest(TestOmciDownload('test_onu_do_software_upgrade'))
+# this_suite.addTest(TestOmciDownload('test_onu_do_activate'))
+
diff --git a/test/unit/extensions/omci/test_me_frame.py b/test/unit/extensions/omci/test_me_frame.py
new file mode 100644
index 0000000..74e2b78
--- /dev/null
+++ b/test/unit/extensions/omci/test_me_frame.py
@@ -0,0 +1,317 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from unittest import TestCase, main
+from nose.tools import assert_raises
+from pyvoltha.adapters.extensions.omci.me_frame import *
+from pyvoltha.adapters.extensions.omci.omci_me import *
+from pyvoltha.adapters.extensions.omci.omci import *
+
+
+def hexify(buffer):
+    """Return a hexadecimal string encoding of input buffer"""
+    return ''.join('%02x' % ord(c) for c in buffer)
+
+
+class TestSelectMeFrameGeneration(TestCase):
+
+    def assertGeneratedFrameEquals(self, frame, ref):
+        assert isinstance(frame, Packet)
+        serialized_hexified_frame = hexify(str(frame)).upper()
+        ref = ref.upper()
+        if serialized_hexified_frame != ref:
+            self.fail('Mismatch:\nReference:\n{}\nGenerated (bad):\n{}'.format(
+                ref, serialized_hexified_frame
+            ))
+
+    def test_mib_reset_message_serialization(self):
+        ref = '00004F0A000200000000000000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OntDataFrame().mib_reset()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_gal_ethernet_profile(self):
+        ref = '0000440A011000010030000000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = GalEthernetProfileFrame(1, max_gem_payload_size=48).create()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_tcont_1(self):
+        ref = '0000480A010680008000040000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+
+        frame = TcontFrame(0x8000, alloc_id=0x400).set()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_tcont_2(self):
+        ref = '0000480A010680018000040100000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+
+        frame = TcontFrame(0x8001, alloc_id=0x401).set()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_8021p_mapper_service_profile(self):
+        ref = '0000440A00828000ffffffffffffffff' \
+              'ffffffffffffffffffff000000000000' \
+              '000000000000000000000028'
+        frame = Ieee8021pMapperServiceProfileFrame(0x8000).create()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_mac_bridge_service_profile(self):
+        ref = '0000440A002D02010001008000140002' \
+              '000f0001000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            spanning_tree_ind=False,
+            learning_ind=True,
+            priority=0x8000,
+            max_age=20 * 256,
+            hello_time=2 * 256,
+            forward_delay=15 * 256,
+            unknown_mac_address_discard=True
+        )
+        frame = MacBridgeServiceProfileFrame(0x201, attributes=data).create()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_gem_port_network_ctp(self):
+        ref = '0000440A010C01000400800003010000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+
+        data = dict(
+            port_id=0x400,
+            tcont_pointer=0x8000,
+            direction=3,
+            traffic_management_pointer_upstream=0x100
+        )
+        frame = GemPortNetworkCtpFrame(0x100, attributes=data).create()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+        # Also test direction as a string parameter
+        frame = GemPortNetworkCtpFrame(0x100, port_id=0x400,
+                                       tcont_id=0x8000,
+                                       direction='bi-directional',
+                                       upstream_tm=0x100).create()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_gem_inteworking_tp(self):
+        ref = '0000440A010A80010100058000000000' \
+              '01000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = GemInterworkingTpFrame(0x8001,
+                                       gem_port_network_ctp_pointer=0x100,
+                                       interworking_option=5,
+                                       service_profile_pointer=0x8000,
+                                       interworking_tp_pointer=0x0,
+                                       gal_profile_pointer=0x1).create()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_8021p_mapper_service_profile(self):
+        ref = '0000480A008280007F80800100000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        ptrs = [0x8001, 0, 0, 0, 0, 0, 0, 0]
+        frame = Ieee8021pMapperServiceProfileFrame(0x8000,
+                                                   interwork_tp_pointers=ptrs).set()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+        ptrs = [0x8001, 0]
+        frame = Ieee8021pMapperServiceProfileFrame(0x8000,
+                                                   interwork_tp_pointers=ptrs).set()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_mac_bridge_port_configuration_data(self):
+        ref = '0000440A002F21010201020380000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+
+        frame = MacBridgePortConfigurationDataFrame(0x2101,
+                                                    bridge_id_pointer=0x201,
+                                                    port_num=2,
+                                                    tp_type=3,
+                                                    tp_pointer=0x8000).create()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_vlan_tagging_filter_data(self):
+        ref = '0000440A005421010400000000000000' \
+              '00000000000000000000000000000000' \
+              '100100000000000000000028'
+        frame = VlanTaggingFilterDataFrame(0x2101,
+                                           vlan_tcis=[0x400],
+                                           forward_operation=0x10).create()
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_extended_vlan_tagging_operation_configuration_data(self):
+        ref = '0000440A00AB02020A04010000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            association_type=10,
+            associated_me_pointer=0x401
+        )
+        frame = \
+            ExtendedVlanTaggingOperationConfigurationDataFrame(0x202,
+                                                               attributes=data)\
+                .create()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_extended_vlan_tagging_operation_configuration_data(self):
+        ref = '0000480A00AB02023800810081000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            input_tpid=0x8100,
+            output_tpid=0x8100,
+            downstream_mode=0,  # inverse of upstream
+        )
+        frame = \
+            ExtendedVlanTaggingOperationConfigurationDataFrame(0x202,
+                                                               attributes=data)\
+                .set()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_extended_vlan_tagging_1(self):
+        ref = '0000480A00AB02020400f00000008200' \
+              '5000402f000000082004000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            received_frame_vlan_tagging_operation_table=\
+                VlanTaggingOperation(
+                    filter_outer_priority=15,
+                    filter_inner_priority=8,
+                    filter_inner_vid=1024,
+                    filter_inner_tpid_de=5,
+                    filter_ether_type=0,
+                    treatment_tags_to_remove=1,
+                    pad3=2,
+                    treatment_outer_priority=15,
+                    treatment_inner_priority=8,
+                    treatment_inner_vid=1024,
+                    treatment_inner_tpid_de=4
+                )
+        )
+        frame = \
+            ExtendedVlanTaggingOperationConfigurationDataFrame(0x202,
+                                                               attributes=data)\
+                .set()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_extended_vlan_tagging_2(self):
+        ref = '0000480A00AB02020400F00000008200' \
+              'd000402f00000008200c000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            received_frame_vlan_tagging_operation_table=
+                VlanTaggingOperation(
+                    filter_outer_priority=15,
+                    filter_inner_priority=8,
+                    filter_inner_vid=1025,
+                    filter_inner_tpid_de=5,
+                    filter_ether_type=0,
+                    treatment_tags_to_remove=1,
+                    pad3=2,
+                    treatment_outer_priority=15,
+                    treatment_inner_priority=8,
+                    treatment_inner_vid=1025,
+                    treatment_inner_tpid_de=4
+                )
+        )
+
+        frame = \
+            ExtendedVlanTaggingOperationConfigurationDataFrame(0x202,
+                                                               attributes=data)\
+                .set()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_mac_bridge_port_configuration_data2(self):
+        ref = '0000440A002F02010201010b04010000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            bridge_id_pointer=0x201,
+            encapsulation_methods=0,
+            port_num=1,
+            port_priority=0,
+            port_path_cost=0,
+            port_spanning_tree_in=0,
+            lan_fcs_ind=0,
+            tp_type=11,
+            tp_pointer=0x401,
+            mac_learning_depth=0
+        )
+        frame = MacBridgePortConfigurationDataFrame(0x201,
+                                                    attributes=data).create()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_pptp_ethernet_uni_frame(self):
+        ref = '0000480A000B020109000005EE000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            administrative_state=0,  # 0 - Unlock
+            max_frame_size=1518      # two-octet field
+        )
+        frame = PptpEthernetUniFrame(0x201,
+                                     attributes=data).set()
+
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_constraint_errors(self):
+        self.assertTrue(True)  # TODO Also test some attribute constraint failures
+
+    def test_mib_upload_next(self):
+        # Test for VOL-649 error. SCAPY was only originally coded for a 'get'
+        # action (8-bit MIB Data Sync value) but MIB Upload Next commands have
+        # a 16-bit field.
+        #
+        # 255 and less always worked
+        OntDataFrame(sequence_number=0).mib_upload_next()
+        OntDataFrame(sequence_number=255).mib_upload_next()
+        # But not 256+
+        OntDataFrame(sequence_number=256).mib_upload_next()
+        OntDataFrame(sequence_number=1000).mib_upload_next()
+        OntDataFrame(sequence_number=0xFFFE).mib_upload_next()
+
+        # Also test the optional arguments for the other actions
+        OntDataFrame().get()
+        OntDataFrame(mib_data_sync=4).set()
+        OntDataFrame().mib_reset()
+        OntDataFrame().mib_upload()
+        # OntDataFrame(ignore_arc=True).get_all_alarms()        Not yet coded
+        # OntDataFrame(ignore_arc=False).get_all_alarms()       Not yet coded
+
+        # Range/type checks
+        assert_raises(ValueError, OntDataFrame, mib_data_sync=-1)
+        assert_raises(ValueError, OntDataFrame, mib_data_sync=256)
+        assert_raises(ValueError, OntDataFrame, sequence_number=-1)
+        assert_raises(ValueError, OntDataFrame, sequence_number=0x10000)
+        assert_raises(TypeError, OntDataFrame, ignore_arc=123)
+
+
+if __name__ == '__main__':
+    main()
+
diff --git a/test/unit/extensions/omci/test_mib_db_dict.py b/test/unit/extensions/omci/test_mib_db_dict.py
new file mode 100644
index 0000000..2f7f26d
--- /dev/null
+++ b/test/unit/extensions/omci/test_mib_db_dict.py
@@ -0,0 +1,521 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from unittest import main, TestCase
+
+from pyvoltha.adapters.extensions.omci.omci_entities import *
+from pyvoltha.adapters.extensions.omci.database.mib_db_dict import *
+from pyvoltha.adapters.extensions.omci.database.mib_db_api import MODIFIED_KEY, CREATED_KEY,\
+    DEVICE_ID_KEY, MDS_KEY, LAST_SYNC_KEY
+from mock.mock_adapter_agent import MockAdapterAgent, MockDevice
+from nose.tools import raises, assert_raises
+import time
+
+_DEVICE_ID = 'br-549'
+
+
+class TestOmciMibDbDict(TestCase):
+
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+        self.adapter_agent.add_device(MockDevice(_DEVICE_ID))  # For Entity class lookups
+        self.db = MibDbVolatileDict(self.adapter_agent)
+
+    def tearDown(self):
+        self.db.stop()
+
+    def test_start_stop(self):
+        # Simple start stop
+        self.assertFalse(self.db.active)
+        self.db.start()
+        self.assertTrue(self.db.active)
+        self.db.stop()
+        self.assertFalse(self.db.active)
+
+        # Start after start still okay
+        self.db.start()
+        self.db.start()
+        self.assertTrue(self.db.active)
+
+        self.db.stop()
+        self.db.stop()
+        self.assertFalse(self.db.active)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_add(self):
+        self.db.add(_DEVICE_ID)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_remove(self):
+        self.db.remove(_DEVICE_ID)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_query_1(self):
+        self.db.query(_DEVICE_ID, 0)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_query_2(self):
+        self.db.query(_DEVICE_ID, 0, 0)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_query_3(self):
+        self.db.query(_DEVICE_ID, 0, 0, 'test')
+
+    @raises(DatabaseStateError)
+    def test_bad_state_set(self):
+        self.db.set(_DEVICE_ID, 0, 0, {'test': 123})
+
+    @raises(DatabaseStateError)
+    def test_bad_state_delete(self):
+        self.db.delete(_DEVICE_ID, 0, 0)
+
+    @raises(KeyError)
+    def test_no_device_query(self):
+        self.db.start()
+        self.db.query(_DEVICE_ID)
+
+    def test_no_device_last_sync(self):
+        self.db.start()
+        # Returns None, not a KeyError
+        value = self.db.get_last_sync(_DEVICE_ID)
+        self.assertIsNone(value)
+
+    def test_no_device_mds(self):
+        self.db.start()
+        # Returns None, not a KeyError
+        value = self.db.get_mib_data_sync(_DEVICE_ID)
+        self.assertIsNone(value)
+
+    @raises(KeyError)
+    def test_no_device_save_last_sync(self):
+        self.db.start()
+        self.db.save_last_sync(_DEVICE_ID, datetime.utcnow())
+
+    @raises(KeyError)
+    def test_no_device_save_mds(self):
+        self.db.start()
+        self.db.save_mib_data_sync(_DEVICE_ID, 123)
+
+    def test_param_types(self):
+        self.db.start()
+        assert_raises(TypeError, self.db.add, 123)
+        assert_raises(TypeError, self.db.remove, 123)
+        assert_raises(TypeError, self.db.query, 123)
+
+        assert_raises(TypeError, self.db.get_mib_data_sync, 123)
+        assert_raises(TypeError, self.db.save_mib_data_sync, 123, 0)
+        assert_raises(TypeError, self.db.save_mib_data_sync, _DEVICE_ID, 'zero')
+
+        assert_raises(TypeError, self.db.get_last_sync, 123)
+        assert_raises(TypeError, self.db.save_last_sync, 123, datetime.utcnow())
+        assert_raises(TypeError, self.db.save_last_sync, _DEVICE_ID, 'bad-date')
+
+        assert_raises(TypeError, self.db.set, 123, 0, 0, {'test': 0})
+        assert_raises(TypeError, self.db.set, None, 0, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, None, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0, None, {'test': 0})
+        assert_raises(TypeError, self.db.set, _DEVICE_ID, 0, 0, None)
+        assert_raises(TypeError, self.db.set, _DEVICE_ID, 0, 0, 'not-a-dict')
+
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, -1, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0x10000, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0, -1, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0, 0x10000, {'test': 0})
+
+        assert_raises(TypeError, self.db.delete, 123, 0, 0)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, -1, 0)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, 0x10000, 0)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, 0, -1)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, 0, 0x10000)
+
+    def test_add_remove_device(self):
+        self.db.start()
+
+        # Remove of non-existent device is not an error
+        assert_raises(KeyError, self.db.query, _DEVICE_ID)
+        self.db.remove(_DEVICE_ID)
+
+        start_time = datetime.utcnow()
+        self.db.add(_DEVICE_ID)
+        dev_data = self.db.query(_DEVICE_ID)
+        end_time = datetime.utcnow()
+
+        self.assertEqual(dev_data[DEVICE_ID_KEY], _DEVICE_ID)
+        self.assertEquals(dev_data[MDS_KEY], 0)
+        self.assertIsNone(dev_data[LAST_SYNC_KEY])
+        self.assertEqual(dev_data[VERSION_KEY], MibDbVolatileDict.CURRENT_VERSION)
+
+        # Remove it
+        self.db.remove(_DEVICE_ID)
+        assert_raises(KeyError, self.db.query, _DEVICE_ID)
+
+        # Remove of non-existant dev okay
+        self.db.remove(_DEVICE_ID +'abcd')
+
+        # Overwrite tests
+        self.db.add(_DEVICE_ID)
+        assert_raises(KeyError, self.db.add, _DEVICE_ID)
+        self.db.add(_DEVICE_ID, overwrite=True)  # This is okay
+
+    def test_mib_data_sync(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+        self.assertEquals(self.db.get_mib_data_sync(_DEVICE_ID), 0)
+
+        self.db.save_mib_data_sync(_DEVICE_ID, 100)
+        self.assertEqual(self.db.get_mib_data_sync(_DEVICE_ID), 100)
+
+        assert_raises(ValueError, self.db.save_mib_data_sync, _DEVICE_ID, -1)
+        assert_raises(ValueError, self.db.save_mib_data_sync, _DEVICE_ID, 256)
+
+    def test_last_sync(self):
+        self.db.start()
+        self.assertIsNone(self.db.get_last_sync(_DEVICE_ID))
+
+        self.db.add(_DEVICE_ID)
+        self.assertIsNone(self.db.get_last_sync(_DEVICE_ID))
+
+        now = datetime.utcnow()
+
+        self.db.save_last_sync(_DEVICE_ID, now)
+        self.assertEqual(self.db.get_last_sync(_DEVICE_ID), now)
+
+        assert_raises(TypeError, self.db.save_last_sync, _DEVICE_ID, 'hello')
+
+    def test_set_and_query(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)     # Base device DB created here
+        time.sleep(0.1)
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {'vendor_id': 'ABCD'}
+
+        start_time = datetime.utcnow()
+        set_occurred = self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.assertTrue(set_occurred)
+        end_time = datetime.utcnow()
+
+        dev_data = self.db.query(_DEVICE_ID)
+        self.assertEqual(dev_data[DEVICE_ID_KEY], _DEVICE_ID)
+
+        dev_classes = [v for k, v in dev_data.items() if isinstance(k, int)]
+
+        self.assertEqual(len(dev_classes), 1)
+        class_data = dev_classes[0]
+
+        self.assertEqual(class_data[CLASS_ID_KEY], class_id)
+
+        class_insts = [v for k, v in class_data.items() if isinstance(k, int)]
+
+        self.assertEqual(len(class_insts), 1)
+        inst_data = class_insts[0]
+
+        self.assertEqual(inst_data[INSTANCE_ID_KEY], inst_id)
+        self.assertGreaterEqual(inst_data[MODIFIED_KEY], start_time)
+        self.assertLessEqual(inst_data[MODIFIED_KEY], end_time)
+        self.assertLessEqual(inst_data[CREATED_KEY], inst_data[MODIFIED_KEY])
+
+        inst_attributes = inst_data[ATTRIBUTES_KEY]
+        self.assertEqual(len(inst_attributes), 1)
+
+        self.assertTrue('vendor_id' in inst_attributes)
+        self.assertEqual(inst_attributes['vendor_id'], attributes['vendor_id'])
+
+        ########################################
+        # Query with device and class. Should be same as from full device query
+        cls_2_data = self.db.query(_DEVICE_ID, class_id)
+
+        self.assertEqual(class_data[CLASS_ID_KEY], cls_2_data[CLASS_ID_KEY])
+
+        cl2_insts = {k:v for k, v in cls_2_data.items() if isinstance(k, int)}
+        self.assertEqual(len(cl2_insts), len(class_insts))
+
+        # Bad class id query
+        cls_no_data = self.db.query(_DEVICE_ID, class_id + 1)
+        self.assertTrue(isinstance(cls_no_data, dict))
+        self.assertEqual(len(cls_no_data), 0)
+
+        ########################################
+        # Query with device, class, instance
+        inst_2_data = self.db.query(_DEVICE_ID, class_id, inst_id)
+
+        self.assertEqual(inst_data[INSTANCE_ID_KEY], inst_2_data[INSTANCE_ID_KEY])
+        self.assertEqual(inst_data[MODIFIED_KEY], inst_2_data[MODIFIED_KEY])
+        self.assertEqual(inst_data[CREATED_KEY], inst_2_data[CREATED_KEY])
+
+        inst2_attr = inst_2_data[ATTRIBUTES_KEY]
+        self.assertEqual(len(inst2_attr), len(inst_attributes))
+
+        # Bad instance id query
+        inst_no_data = self.db.query(_DEVICE_ID, class_id, inst_id + 100)
+        self.assertTrue(isinstance(inst_no_data, dict))
+        self.assertEqual(len(inst_no_data), 0)
+
+        ########################################
+        # Attribute queries
+        attr_2_data = self.db.query(_DEVICE_ID, class_id, inst_id, 'vendor_id')
+        self.assertEqual(attr_2_data['vendor_id'], attributes['vendor_id'])
+
+        attr_3_data = self.db.query(_DEVICE_ID, class_id, inst_id, ['vendor_id'])
+        self.assertEqual(attr_3_data['vendor_id'], attributes['vendor_id'])
+
+        attr_4_data = self.db.query(_DEVICE_ID, class_id, inst_id, {'vendor_id'})
+        self.assertEqual(attr_4_data['vendor_id'], attributes['vendor_id'])
+
+        attr_no_data = self.db.query(_DEVICE_ID, class_id, inst_id, 'no_such_thing')
+        self.assertTrue(isinstance(attr_no_data, dict))
+        self.assertEqual(len(attr_no_data), 0)
+
+        # Set to same value does not change modified data.  The modified is
+        # at the instance level
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {'vendor_id': 'ABCD'}
+        set_occurred = self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.assertFalse(set_occurred)
+
+        inst_3_data = self.db.query(_DEVICE_ID, class_id, inst_id)
+        self.assertEqual(inst_data[MODIFIED_KEY], inst_3_data[MODIFIED_KEY])
+        self.assertEqual(inst_data[CREATED_KEY], inst_3_data[CREATED_KEY])
+
+        # But set to new value does
+        time.sleep(0.1)
+        attributes = {'vendor_id': 'WXYZ'}
+        set_occurred = self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.assertTrue(set_occurred)
+
+        inst_4_data = self.db.query(_DEVICE_ID, class_id, inst_id)
+        self.assertLess(inst_3_data[MODIFIED_KEY], inst_4_data[MODIFIED_KEY])
+        self.assertEqual(inst_3_data[CREATED_KEY], inst_4_data[CREATED_KEY])
+
+    def test_delete_instances(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+        create_time = datetime.utcnow()
+
+        class_id = GalEthernetProfile.class_id
+        inst_id_1 = 0x100
+        inst_id_2 = 0x200
+        attributes = {'max_gem_payload_size': 1500}
+
+        self.db.set(_DEVICE_ID, class_id, inst_id_1, attributes)
+        self.db.set(_DEVICE_ID, class_id, inst_id_2, attributes)
+        set_time = datetime.utcnow()
+        time.sleep(0.1)
+
+        dev_data = self.db.query(_DEVICE_ID)
+        cls_data = self.db.query(_DEVICE_ID, class_id)
+        inst_data = {k: v for k, v in cls_data.items() if isinstance(k, int)}
+        self.assertEqual(len(inst_data), 2)
+
+        self.assertLessEqual(dev_data[CREATED_KEY], create_time)
+        self.assertLessEqual(self.db.created, create_time)
+
+        # Delete one instance
+        time.sleep(0.1)
+        del_time = datetime.utcnow()
+        result = self.db.delete(_DEVICE_ID, class_id, inst_id_1)
+        self.assertTrue(result)     # True returned if a del actually happened
+
+        dev_data = self.db.query(_DEVICE_ID)
+        cls_data = self.db.query(_DEVICE_ID, class_id)
+        inst_data = {k: v for k, v in cls_data.items() if isinstance(k, int)}
+        self.assertEqual(len(inst_data), 1)
+
+        self.assertLessEqual(dev_data[CREATED_KEY], create_time)
+        self.assertLessEqual(self.db.created, create_time)
+
+        # Delete remaining instance
+        time.sleep(0.1)
+        result = self.db.delete(_DEVICE_ID, class_id, inst_id_2)
+        self.assertTrue(result)     # True returned if a del actually happened
+
+        dev_data = self.db.query(_DEVICE_ID)
+        cls_data = {k: v for k, v in dev_data.items() if isinstance(k, int)}
+        self.assertEqual(len(cls_data), 0)
+        self.assertLessEqual(dev_data[CREATED_KEY], create_time)
+
+        # Delete returns false if not instance
+        self.assertFalse(self.db.delete(_DEVICE_ID, class_id, inst_id_1))
+        self.assertFalse(self.db.delete(_DEVICE_ID, class_id, inst_id_2))
+
+    def test_on_mib_reset_listener(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+        time.sleep(0.1)
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {'vendor_id': 'ABCD'}
+
+        set_time = datetime.utcnow()
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        time.sleep(0.1)
+        self.db.on_mib_reset(_DEVICE_ID)
+
+        dev_data = self.db.query(_DEVICE_ID)
+        self.assertEqual(dev_data[DEVICE_ID_KEY], _DEVICE_ID)
+        self.assertLessEqual(dev_data[CREATED_KEY], set_time)
+        self.assertLessEqual(self.db.created, set_time)
+
+        self.assertFalse(any(isinstance(cls, int) for cls in dev_data.iterkeys()))
+
+    def test_str_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = OltG.class_id
+        inst_id = 0
+        attributes = {
+            'olt_vendor_id': 'ABCD',             # StrFixedLenField(4)
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], basestring) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_mac_address_ip_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = IpHostConfigData.class_id
+        inst_id = 0
+        attributes = {
+            'mac_address': '00:01:02:03:04:05',             # MACField
+            'ip_address': '1.2.3.4',                        # IPField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], basestring) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_byte_and_short_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = UniG.class_id
+        inst_id = 0
+        attributes = {
+            'administrative_state': int(1),                # ByteField
+            'non_omci_management_identifier': int(12345)   # IPField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_int_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes = {
+            'related_port': int(1234567)    # IntField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_long_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes = {
+            'packet_drop_queue_thresholds': int(0x1234)        # LongField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_bit_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {
+            'extended_tc_layer_options': long(0x1234),        # BitField(16)
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_list_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = VlanTaggingFilterData.class_id
+        inst_id = 0
+        vlan_filter_list = [0] * 12
+        vlan_filter_list[0] = 0x1234
+
+        attributes = {
+            'vlan_filter_list': vlan_filter_list,        # FieldListField
+            'forward_operation': 0,
+            'number_of_entries': 1
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_complex_json_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = ExtendedVlanTaggingOperationConfigurationData.class_id
+        inst_id = 0x202
+        table_data = VlanTaggingOperation(
+            filter_outer_priority=15,
+            filter_inner_priority=8,
+            filter_inner_vid=1024,
+            filter_inner_tpid_de=5,
+            filter_ether_type=0,
+            treatment_tags_to_remove=1,
+            pad3=2,
+            treatment_outer_priority=15,
+            treatment_inner_priority=8,
+            treatment_inner_vid=1024,
+            treatment_inner_tpid_de=4
+        )
+        attributes = dict(
+            received_frame_vlan_tagging_operation_table=table_data
+        )
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        table_as_dict = json.loads(table_data.to_json())
+
+        self.assertTrue(all(isinstance(data['received_frame_vlan_tagging_operation_table'][0].fields[k],
+                                       type(attributes['received_frame_vlan_tagging_operation_table'].fields[k]))
+                            for k in attributes['received_frame_vlan_tagging_operation_table'].fields.keys()))
+        self.assertTrue(all(data['received_frame_vlan_tagging_operation_table'][0].fields[k] ==
+                            attributes['received_frame_vlan_tagging_operation_table'].fields[k]
+                            for k in attributes['received_frame_vlan_tagging_operation_table'].fields.keys()))
+        self.assertTrue(all(data['received_frame_vlan_tagging_operation_table'][0].fields[k] == table_as_dict[k]
+                            for k in table_as_dict.keys()))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/extensions/omci/test_mib_db_ext.py b/test/unit/extensions/omci/test_mib_db_ext.py
new file mode 100644
index 0000000..925e81f
--- /dev/null
+++ b/test/unit/extensions/omci/test_mib_db_ext.py
@@ -0,0 +1,537 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from unittest import main, TestCase
+
+from pyvoltha.adapters.extensions.omci.database.mib_db_ext import *
+from pyvoltha.adapters.extensions.omci.database.mib_db_api import MODIFIED_KEY, CREATED_KEY,\
+    DEVICE_ID_KEY, MDS_KEY, LAST_SYNC_KEY
+from pyvoltha.adapters.extensions.omci.omci_cc import UNKNOWN_CLASS_ATTRIBUTE_KEY
+from mock.mock_adapter_agent import MockAdapterAgent, MockDevice
+from nose.tools import raises, assert_raises
+import time
+
+_DEVICE_ID = 'br-549'
+
+
+class TestOmciMibDbExt(TestCase):
+
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+        self.adapter_agent.add_device(MockDevice(_DEVICE_ID))  # For Entity class lookups
+        self.db = MibDbExternal(self.adapter_agent)
+
+    def tearDown(self):
+        self.db.stop()
+
+    def test_start_stop(self):
+        # Simple start stop
+        self.assertFalse(self.db.active)
+        self.db.start()
+        self.assertTrue(self.db.active)
+        self.db.stop()
+        self.assertFalse(self.db.active)
+
+        # Start after start still okay
+        self.db.start()
+        self.db.start()
+        self.assertTrue(self.db.active)
+
+        self.db.stop()
+        self.db.stop()
+        self.assertFalse(self.db.active)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_add(self):
+        self.db.add(_DEVICE_ID)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_remove(self):
+        self.db.remove(_DEVICE_ID)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_query_1(self):
+        self.db.query(_DEVICE_ID, 0)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_query_2(self):
+        self.db.query(_DEVICE_ID, 0, 0)
+
+    @raises(DatabaseStateError)
+    def test_bad_state_query_3(self):
+        self.db.query(_DEVICE_ID, 0, 0, 'test')
+
+    @raises(DatabaseStateError)
+    def test_bad_state_set(self):
+        self.db.set(_DEVICE_ID, 0, 0, {'test': 123})
+
+    @raises(DatabaseStateError)
+    def test_bad_state_delete(self):
+        self.db.delete(_DEVICE_ID, 0, 0)
+
+    @raises(KeyError)
+    def test_no_device_query(self):
+        self.db.start()
+        self.db.query(_DEVICE_ID)
+
+    def test_no_device_last_sync(self):
+        self.db.start()
+        # Returns None, not a KeyError
+        value = self.db.get_last_sync(_DEVICE_ID)
+        self.assertIsNone(value)
+
+    def test_no_device_mds(self):
+        self.db.start()
+        # Returns None, not a KeyError
+        value = self.db.get_mib_data_sync(_DEVICE_ID)
+        self.assertIsNone(value)
+
+    @raises(KeyError)
+    def test_no_device_save_last_sync(self):
+        self.db.start()
+        self.db.save_last_sync(_DEVICE_ID, datetime.utcnow())
+
+    @raises(KeyError)
+    def test_no_device_save_mds(self):
+        self.db.start()
+        self.db.save_mib_data_sync(_DEVICE_ID, 123)
+
+    def test_param_types(self):
+        self.db.start()
+        assert_raises(TypeError, self.db.add, 123)
+        assert_raises(TypeError, self.db.remove, 123)
+        assert_raises(TypeError, self.db.query, 123)
+
+        assert_raises(TypeError, self.db.get_mib_data_sync, 123)
+        assert_raises(TypeError, self.db.save_mib_data_sync, 123, 0)
+        assert_raises(TypeError, self.db.save_mib_data_sync, _DEVICE_ID, 'zero')
+
+        assert_raises(TypeError, self.db.get_last_sync, 123)
+        assert_raises(TypeError, self.db.save_last_sync, 123, datetime.utcnow())
+        assert_raises(TypeError, self.db.save_last_sync, _DEVICE_ID, 'bad-date')
+
+        assert_raises(TypeError, self.db.set, 123, 0, 0, {'test': 0})
+        assert_raises(TypeError, self.db.set, None, 0, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, None, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0, None, {'test': 0})
+        assert_raises(TypeError, self.db.set, _DEVICE_ID, 0, 0, None)
+        assert_raises(TypeError, self.db.set, _DEVICE_ID, 0, 0, 'not-a-dict')
+
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, -1, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0x10000, 0, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0, -1, {'test': 0})
+        assert_raises(ValueError, self.db.set, _DEVICE_ID, 0, 0x10000, {'test': 0})
+
+        assert_raises(TypeError, self.db.delete, 123, 0, 0)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, -1, 0)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, 0x10000, 0)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, 0, -1)
+        assert_raises(ValueError, self.db.delete, _DEVICE_ID, 0, 0x10000)
+
+    def test_add_remove_device(self):
+        self.db.start()
+
+        # Remove of non-existent device is not an error
+        assert_raises(KeyError, self.db.query, _DEVICE_ID)
+        self.db.remove(_DEVICE_ID)
+
+        start_time = datetime.utcnow()
+        self.db.add(_DEVICE_ID)
+        dev_data = self.db.query(_DEVICE_ID)
+
+        self.assertEqual(dev_data[DEVICE_ID_KEY], _DEVICE_ID)
+        self.assertEquals(dev_data[MDS_KEY], 0)
+        self.assertIsNone(dev_data[LAST_SYNC_KEY])
+        self.assertEqual(dev_data[VERSION_KEY], MibDbExternal.CURRENT_VERSION)
+
+        self.assertGreaterEqual(self.db.created, start_time)
+
+        # Remove it
+        self.db.remove(_DEVICE_ID)
+        assert_raises(KeyError, self.db.query, _DEVICE_ID)
+
+        # Remove of non-existant dev okay
+        self.db.remove(_DEVICE_ID +'abcd')
+
+        # Overwrite tests
+        self.db.add(_DEVICE_ID)
+        assert_raises(KeyError, self.db.add, _DEVICE_ID)
+        self.db.add(_DEVICE_ID, overwrite=True)  # This is okay
+
+    def test_mib_data_sync(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+        self.assertEquals(self.db.get_mib_data_sync(_DEVICE_ID), 0)
+
+        self.db.save_mib_data_sync(_DEVICE_ID, 100)
+        self.assertEqual(self.db.get_mib_data_sync(_DEVICE_ID), 100)
+
+        assert_raises(ValueError, self.db.save_mib_data_sync, _DEVICE_ID, -1)
+        assert_raises(ValueError, self.db.save_mib_data_sync, _DEVICE_ID, 256)
+
+    def test_last_sync(self):
+        self.db.start()
+        self.assertIsNone(self.db.get_last_sync(_DEVICE_ID))
+
+        self.db.add(_DEVICE_ID)
+        self.assertIsNone(self.db.get_last_sync(_DEVICE_ID))
+
+        now = datetime.utcnow()
+
+        self.db.save_last_sync(_DEVICE_ID, now)
+        self.assertEqual(self.db.get_last_sync(_DEVICE_ID), now)
+
+        assert_raises(TypeError, self.db.save_last_sync, _DEVICE_ID, 'hello')
+
+    def test_set_and_query(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)     # Base device DB created here
+        time.sleep(0.1)
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {'vendor_id': 'ABCD'}
+
+        start_time = datetime.utcnow()
+        set_occurred = self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.assertTrue(set_occurred)
+        end_time = datetime.utcnow()
+
+        dev_data = self.db.query(_DEVICE_ID)
+        self.assertEqual(dev_data[DEVICE_ID_KEY], _DEVICE_ID)
+
+        dev_classes = [v for k, v in dev_data.items() if isinstance(k, int)]
+
+        self.assertEqual(len(dev_classes), 1)
+        class_data = dev_classes[0]
+
+        self.assertEqual(class_data[CLASS_ID_KEY], class_id)
+
+        class_insts = [v for k, v in class_data.items() if isinstance(k, int)]
+
+        self.assertEqual(len(class_insts), 1)
+        inst_data = class_insts[0]
+
+        self.assertEqual(inst_data[INSTANCE_ID_KEY], inst_id)
+        self.assertGreaterEqual(inst_data[MODIFIED_KEY], start_time)
+        self.assertLessEqual(inst_data[MODIFIED_KEY], end_time)
+        self.assertLessEqual(inst_data[CREATED_KEY], inst_data[MODIFIED_KEY])
+
+        inst_attributes = inst_data[ATTRIBUTES_KEY]
+        self.assertEqual(len(inst_attributes), 1)
+
+        self.assertTrue('vendor_id' in inst_attributes)
+        self.assertEqual(inst_attributes['vendor_id'], attributes['vendor_id'])
+
+        ########################################
+        # Query with device and class. Should be same as from full device query
+        cls_2_data = self.db.query(_DEVICE_ID, class_id)
+
+        self.assertEqual(class_data[CLASS_ID_KEY], cls_2_data[CLASS_ID_KEY])
+
+        cl2_insts = {k:v for k, v in cls_2_data.items() if isinstance(k, int)}
+        self.assertEqual(len(cl2_insts), len(class_insts))
+
+        # Bad class id query
+        cls_no_data = self.db.query(_DEVICE_ID, class_id + 1)
+        self.assertTrue(isinstance(cls_no_data, dict))
+        self.assertEqual(len(cls_no_data), 0)
+
+        ########################################
+        # Query with device, class, instance
+        inst_2_data = self.db.query(_DEVICE_ID, class_id, inst_id)
+
+        self.assertEqual(inst_data[INSTANCE_ID_KEY], inst_2_data[INSTANCE_ID_KEY])
+        self.assertEqual(inst_data[MODIFIED_KEY], inst_2_data[MODIFIED_KEY])
+        self.assertEqual(inst_data[CREATED_KEY], inst_2_data[CREATED_KEY])
+
+        inst2_attr = inst_2_data[ATTRIBUTES_KEY]
+        self.assertEqual(len(inst2_attr), len(inst_attributes))
+
+        # Bad instance id query
+        inst_no_data = self.db.query(_DEVICE_ID, class_id, inst_id + 100)
+        self.assertTrue(isinstance(inst_no_data, dict))
+        self.assertEqual(len(inst_no_data), 0)
+
+        ########################################
+        # Attribute queries
+        attr_2_data = self.db.query(_DEVICE_ID, class_id, inst_id, 'vendor_id')
+        self.assertEqual(attr_2_data['vendor_id'], attributes['vendor_id'])
+
+        attr_3_data = self.db.query(_DEVICE_ID, class_id, inst_id, ['vendor_id'])
+        self.assertEqual(attr_3_data['vendor_id'], attributes['vendor_id'])
+
+        attr_4_data = self.db.query(_DEVICE_ID, class_id, inst_id, {'vendor_id'})
+        self.assertEqual(attr_4_data['vendor_id'], attributes['vendor_id'])
+
+        attr_no_data = self.db.query(_DEVICE_ID, class_id, inst_id, 'no_such_thing')
+        self.assertTrue(isinstance(attr_no_data, dict))
+        self.assertEqual(len(attr_no_data), 0)
+
+        # Set to same value does not change modified data.  The modified is
+        # at the instance level
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {'vendor_id': 'ABCD'}
+        set_occurred = self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.assertFalse(set_occurred)
+
+        inst_3_data = self.db.query(_DEVICE_ID, class_id, inst_id)
+        self.assertEqual(inst_data[MODIFIED_KEY], inst_3_data[MODIFIED_KEY])
+        self.assertEqual(inst_data[CREATED_KEY], inst_3_data[CREATED_KEY])
+
+        # But set to new value does
+        time.sleep(0.1)
+        attributes = {'vendor_id': 'WXYZ'}
+        set_occurred = self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.assertTrue(set_occurred)
+
+        inst_4_data = self.db.query(_DEVICE_ID, class_id, inst_id)
+        self.assertLess(inst_3_data[MODIFIED_KEY], inst_4_data[MODIFIED_KEY])
+        self.assertEqual(inst_3_data[CREATED_KEY], inst_4_data[CREATED_KEY])
+
+    def test_delete_instances(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+        create_time = datetime.utcnow()
+
+        class_id = GalEthernetProfile.class_id
+        inst_id_1 = 0x100
+        inst_id_2 = 0x200
+        attributes = {'max_gem_payload_size': 1500}
+
+        self.db.set(_DEVICE_ID, class_id, inst_id_1, attributes)
+        self.db.set(_DEVICE_ID, class_id, inst_id_2, attributes)
+        time.sleep(0.1)
+
+        dev_data = self.db.query(_DEVICE_ID)
+        cls_data = self.db.query(_DEVICE_ID, class_id)
+        inst_data = {k: v for k, v in cls_data.items() if isinstance(k, int)}
+        self.assertEqual(len(inst_data), 2)
+
+        self.assertLessEqual(dev_data[CREATED_KEY], create_time)
+        self.assertLessEqual(self.db.created, create_time)
+
+        # Delete one instance
+        time.sleep(0.1)
+        result = self.db.delete(_DEVICE_ID, class_id, inst_id_1)
+        self.assertTrue(result)     # True returned if a del actually happened
+
+        dev_data = self.db.query(_DEVICE_ID)
+        cls_data = self.db.query(_DEVICE_ID, class_id)
+        inst_data = {k: v for k, v in cls_data.items() if isinstance(k, int)}
+        self.assertEqual(len(inst_data), 1)
+
+        self.assertLessEqual(dev_data[CREATED_KEY], create_time)
+        self.assertLessEqual(self.db.created, create_time)
+
+        # Delete remaining instance
+        time.sleep(0.1)
+        result = self.db.delete(_DEVICE_ID, class_id, inst_id_2)
+        self.assertTrue(result)     # True returned if a del actually happened
+
+        dev_data = self.db.query(_DEVICE_ID)
+        cls_data = {k: v for k, v in dev_data.items() if isinstance(k, int)}
+        self.assertEqual(len(cls_data), 0)
+        self.assertLessEqual(dev_data[CREATED_KEY], create_time)
+
+        # Delete returns false if not instance
+        self.assertFalse(self.db.delete(_DEVICE_ID, class_id, inst_id_1))
+        self.assertFalse(self.db.delete(_DEVICE_ID, class_id, inst_id_2))
+
+    def test_on_mib_reset_listener(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+        time.sleep(0.1)
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {'vendor_id': 'ABCD'}
+
+        set_time = datetime.utcnow()
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        time.sleep(0.1)
+        self.db.on_mib_reset(_DEVICE_ID)
+
+        dev_data = self.db.query(_DEVICE_ID)
+        self.assertEqual(dev_data[DEVICE_ID_KEY], _DEVICE_ID)
+        self.assertLessEqual(dev_data[CREATED_KEY], set_time)
+        self.assertLessEqual(self.db.created, set_time)
+
+        self.assertFalse(any(isinstance(cls, int) for cls in dev_data.iterkeys()))
+
+    def test_str_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = OltG.class_id
+        inst_id = 0
+        attributes = {
+            'olt_vendor_id': 'ABCD',             # StrFixedLenField(4)
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], basestring) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_mac_address_ip_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = IpHostConfigData.class_id
+        inst_id = 0
+        attributes = {
+            'mac_address': '00:01:02:03:04:05',             # MACField
+            'ip_address': '1.2.3.4',                        # IPField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], basestring) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_byte_and_short_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = UniG.class_id
+        inst_id = 0
+        attributes = {
+            'administrative_state': int(1),                # ByteField
+            'non_omci_management_identifier': int(12345)   # IPField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_int_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes = {
+            'related_port': int(1234567)    # IntField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_long_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes = {
+            'packet_drop_queue_thresholds': int(0x1234)        # LongField
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_bit_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {
+            'extended_tc_layer_options': long(0x1234),        # BitField(16)
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_list_field_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = VlanTaggingFilterData.class_id
+        inst_id = 0
+        vlan_filter_list = [0] * 12
+        vlan_filter_list[0] = 0x1234
+
+        attributes = {
+            'vlan_filter_list': vlan_filter_list,        # FieldListField
+            'forward_operation': 0,
+            'number_of_entries': 1
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(all(isinstance(data[k], type(attributes[k])) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+    def test_complex_json_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        class_id = ExtendedVlanTaggingOperationConfigurationData.class_id
+        inst_id = 0x202
+        table_data = VlanTaggingOperation(
+            filter_outer_priority=15,
+            filter_inner_priority=8,
+            filter_inner_vid=1024,
+            filter_inner_tpid_de=5,
+            filter_ether_type=0,
+            treatment_tags_to_remove=1,
+            pad3=2,
+            treatment_outer_priority=15,
+            treatment_inner_priority=8,
+            treatment_inner_vid=1024,
+            treatment_inner_tpid_de=4
+        )
+        attributes = dict(
+            received_frame_vlan_tagging_operation_table=table_data
+        )
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        table_as_dict = json.loads(table_data.to_json())
+
+        self.assertTrue(all(isinstance(data['received_frame_vlan_tagging_operation_table'][0].fields[k],
+                                       type(attributes['received_frame_vlan_tagging_operation_table'].fields[k]))
+                            for k in attributes['received_frame_vlan_tagging_operation_table'].fields.keys()))
+        self.assertTrue(all(data['received_frame_vlan_tagging_operation_table'][0].fields[k] ==
+                            attributes['received_frame_vlan_tagging_operation_table'].fields[k]
+                            for k in attributes['received_frame_vlan_tagging_operation_table'].fields.keys()))
+        self.assertTrue(all(data['received_frame_vlan_tagging_operation_table'][0].fields[k] == table_as_dict[k]
+                            for k in table_as_dict.keys()))
+
+    def test_unknown_me_serialization(self):
+        self.db.start()
+        self.db.add(_DEVICE_ID)
+
+        blob = '00010000000c0000000000000000000000000000000000000000'
+        class_id = 0xff78
+        inst_id = 0x101
+        attributes = {
+            UNKNOWN_CLASS_ATTRIBUTE_KEY: blob
+        }
+        self.db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        data = self.db.query(_DEVICE_ID, class_id, inst_id, attributes.keys())
+        self.assertTrue(isinstance(UNKNOWN_CLASS_ATTRIBUTE_KEY, basestring))
+        self.assertTrue(all(isinstance(attributes[k], basestring) for k in attributes.keys()))
+        self.assertTrue(all(data[k] == attributes[k] for k in attributes.keys()))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/extensions/omci/test_mib_resync_task.py b/test/unit/extensions/omci/test_mib_resync_task.py
new file mode 100644
index 0000000..43b27d9
--- /dev/null
+++ b/test/unit/extensions/omci/test_mib_resync_task.py
@@ -0,0 +1,372 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from unittest import main, TestCase
+from pyvoltha.adapters.extensions.omci.omci_entities import *
+from pyvoltha.adapters.extensions.omci.tasks.mib_resync_task import MibResyncTask
+from pyvoltha.adapters.extensions.omci.database.mib_db_dict import MibDbVolatileDict as OnuDB
+from pyvoltha.adapters.extensions.omci.database.mib_db_ext import MibDbExternal as OltDB
+from mock.mock_adapter_agent import MockAdapterAgent, MockDevice
+
+_DEVICE_ID = 'br-549'
+
+
+class TestOmciMibResyncTask(TestCase):
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+        self.adapter_agent.add_device(MockDevice(_DEVICE_ID))  # For Entity class lookups
+
+        self.onu_db = OnuDB(self.adapter_agent)
+        self.olt_db = OltDB(self.adapter_agent)
+
+        self.onu_db.start()
+        self.olt_db.start()
+
+        self.olt_db.add(_DEVICE_ID)
+        self.onu_db.add(_DEVICE_ID)
+
+        self.task = MibResyncTask(self.adapter_agent, _DEVICE_ID)
+
+    def tearDown(self):
+        self.onu_db.stop()
+        self.olt_db.stop()
+
+    def test_not_same_type_dbs(self):
+        #
+        # OLT DB is a copy of the 'external' DB, ONU is a volatile DB
+        #
+        self.assertNotEqual(type(self.olt_db), type(self.onu_db))
+
+    def test_db_same_format_str_field_serialization(self):
+        class_id = OltG.class_id
+        inst_id = 0
+        attributes = {
+            'olt_vendor_id': 'ABCD',             # StrFixedLenField(4)
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_db_same_format_mac_address_ip_field_serialization(self):
+        class_id = IpHostConfigData.class_id
+        inst_id = 0
+        attributes = {
+            'mac_address': '00:01:02:03:04:05',             # MACField
+            'ip_address': '1.2.3.4',                        # IPField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_db_same_format_byte_and_short_field_serialization(self):
+        class_id = UniG.class_id
+        inst_id = 0
+        attributes = {
+            'administrative_state': int(1),                # ByteField
+            'non_omci_management_identifier': int(12345)   # IPField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_db_same_format_int_field_serialization(self):
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes = {
+            'related_port': int(1234567)    # IntField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_db_same_format_long_field_serialization(self):
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes = {
+            'packet_drop_queue_thresholds': int(0x1234)        # LongField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_db_same_format_bit_field_serialization(self):
+        class_id = OntG.class_id
+        inst_id = 0
+        attributes = {
+            'extended_tc_layer_options': long(0x1234),        # BitField(16)
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_db_same_format_list_field_serialization(self):
+        class_id = VlanTaggingFilterData.class_id
+        inst_id = 0
+        vlan_filter_list = [0] * 12
+        vlan_filter_list[0] = 0x1234
+
+        attributes = {
+            'vlan_filter_list': vlan_filter_list,        # FieldListField
+            'forward_operation': 0,
+            'number_of_entries': 1
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_db_same_format_complex_json_serialization(self):
+        class_id = ExtendedVlanTaggingOperationConfigurationData.class_id
+        inst_id = 0x202
+        table_data = VlanTaggingOperation(
+            filter_outer_priority=15,
+            filter_inner_priority=8,
+            filter_inner_vid=1024,
+            filter_inner_tpid_de=5,
+            filter_ether_type=0,
+            treatment_tags_to_remove=1,
+            pad3=2,
+            treatment_outer_priority=15,
+            treatment_inner_priority=8,
+            treatment_inner_vid=1024,
+            treatment_inner_tpid_de=4
+        )
+        attributes = dict(
+            received_frame_vlan_tagging_operation_table=table_data
+        )
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_on_olt_only(self):
+        class_id = GemInterworkingTp.class_id
+        inst_id = 0
+        attributes = {
+            'gal_loopback_configuration': int(1)
+        }
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 1)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+        self.assertEqual(olt_only, [(class_id, inst_id)])
+
+        # Now a little more complex (extra instance on the OLT
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id + 1, attributes)
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 1)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+        self.assertEqual(olt_only, [(class_id, inst_id + 1)])
+
+    def test_on_onu_only(self):
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes = {
+            'related_port': int(1234567)    # IntField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 1)
+        self.assertEqual(len(attr_diffs), 0)
+        self.assertEqual(onu_only, [(class_id, inst_id)])   # Test contents of what was returned
+
+        # Now a little more complex (extra instance on the ONU
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes)
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id + 1, attributes)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 1)
+        self.assertEqual(len(attr_diffs), 0)
+        self.assertEqual(onu_only, [(class_id, inst_id + 1)])   # Test contents of what was returned
+
+    def test_on_attr_different_value(self):
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes_olt = {
+            'weight': int(12)    # ByteField
+        }
+        attributes_onu = {
+            'weight': int(34)    # ByteField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes_onu)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes_olt)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 1)
+        self.assertEqual(attr_diffs, [(class_id, inst_id, 'weight')])
+
+    def test_ignore_read_only_attribute_differences(self):
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes_olt = {
+            'related_port': int(1234),      # IntField (R/O)
+            'maximum_queue_size': int(222)  # Only on OLT but read-only
+        }
+        attributes_onu = {
+            'related_port': int(5678)    # IntField (R/O)
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes_onu)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes_olt)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 0)
+
+    def test_on_attr_more_on_olt(self):
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes_olt = {
+            'related_port': int(1234),       # IntField
+            'back_pressure_time': int(1234)  # IntField
+        }
+        attributes_onu = {
+            'related_port': int(1234)  # IntField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes_onu)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes_olt)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 1)
+        self.assertEqual(attr_diffs, [(class_id, inst_id, 'back_pressure_time')])
+
+    def test_on_attr_more_on_onu(self):
+        class_id = PriorityQueueG.class_id
+        inst_id = 0
+        attributes_olt = {
+            'related_port': int(1234)  # IntField
+        }
+        attributes_onu = {
+            'related_port': int(1234),       # IntField
+            'back_pressure_time': int(5678)  # IntField
+        }
+        self.onu_db.set(_DEVICE_ID, class_id, inst_id, attributes_onu)
+        self.olt_db.set(_DEVICE_ID, class_id, inst_id, attributes_olt)
+
+        db_copy = self.olt_db.query(_DEVICE_ID)
+        db_active = self.onu_db.query(_DEVICE_ID)
+
+        olt_only, onu_only, attr_diffs = self.task.compare_mibs(db_copy, db_active)
+
+        self.assertEqual(len(olt_only), 0)
+        self.assertEqual(len(onu_only), 0)
+        self.assertEqual(len(attr_diffs), 1)
+        self.assertEqual(attr_diffs, [(class_id, inst_id, 'back_pressure_time')])
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/extensions/omci/test_mib_sync.py b/test/unit/extensions/omci/test_mib_sync.py
new file mode 100644
index 0000000..10a1172
--- /dev/null
+++ b/test/unit/extensions/omci/test_mib_sync.py
@@ -0,0 +1,37 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from unittest import TestCase, main
+from mock.mock_adapter_agent import MockAdapterAgent
+
+
+
+class TestMibSync(TestCase):
+    """
+    Test the MIB Synchronizer State Machine
+    """
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+
+    def tearDown(self):
+        if self.adapter_agent is not None:
+            self.adapter_agent.tearDown()
+
+    # TODO: Add tests
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/extensions/omci/test_mib_upload.py b/test/unit/extensions/omci/test_mib_upload.py
new file mode 100644
index 0000000..c372819
--- /dev/null
+++ b/test/unit/extensions/omci/test_mib_upload.py
@@ -0,0 +1,36 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from unittest import TestCase, main
+from mock.mock_adapter_agent import MockAdapterAgent
+
+
+class TestMibUpload(TestCase):
+    """
+    Test the MIB Upload Task
+    """
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+
+    def tearDown(self):
+        if self.adapter_agent is not None:
+            self.adapter_agent.tearDown()
+
+    # TODO: Add tests
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/extensions/omci/test_omci.py b/test/unit/extensions/omci/test_omci.py
new file mode 100644
index 0000000..6df072b
--- /dev/null
+++ b/test/unit/extensions/omci/test_omci.py
@@ -0,0 +1,1162 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from unittest import TestCase, main
+
+from pyvoltha.adapters.extensions.omci.omci import *
+
+
+def hexify(buffer):
+    """Return a hexadecimal string encoding of input buffer"""
+    return ''.join('%02x' % ord(c) for c in buffer)
+
+
+def chunk(indexable, chunk_size):
+    for i in range(0, len(indexable), chunk_size):
+        yield indexable[i:i + chunk_size]
+
+
+def hex2raw(hex_string):
+    return ''.join(chr(int(byte, 16)) for byte in chunk(hex_string, 2))
+
+
+class TestOmciFundamentals(TestCase):
+
+    def test_bitpos_from_mask(self):
+
+        f = lambda x: bitpos_from_mask(x)
+        self.assertEqual(f(0), [])
+        self.assertEqual(f(1), [0])
+        self.assertEqual(f(3), [0, 1])
+        self.assertEqual(f(255), [0, 1, 2, 3, 4, 5, 6, 7])
+        self.assertEqual(f(0x800), [11])
+        self.assertEqual(f(0x811), [0, 4, 11])
+
+        f = lambda x: bitpos_from_mask(x, 16, -1)
+        self.assertEqual(f(0), [])
+        self.assertEqual(f(1), [16])
+        self.assertEqual(f(0x800), [5])
+        self.assertEqual(f(0x801), [5, 16])
+
+
+    def test_attribute_indeices_from_mask(self):
+
+        f = EntityClass.attribute_indices_from_mask
+        self.assertEqual(f(0), [])
+        self.assertEqual(f(0x800), [5])
+        self.assertEqual(f(0xf000), [1, 2, 3, 4])
+        self.assertEqual(f(0xf804), [1, 2, 3, 4, 5, 14])
+
+    def test_entity_attribute_serialization(self):
+
+        e = CircuitPack(vendor_id='F')
+        self.assertEqual(e.serialize(), 'F\x00\x00\x00')
+
+        e = CircuitPack(vendor_id='FOOX')
+        self.assertEqual(e.serialize(), 'FOOX')
+
+        e = CircuitPack(vendor_id='FOOX', number_of_ports=16)
+        self.assertEqual(e.serialize(), '\x10FOOX')
+
+    def test_entity_attribute_serialization_mask_based(self):
+
+        e = CircuitPack(
+            number_of_ports=4,
+            serial_number='BCMX31323334', # serial number is 4 ascii + 4 hex. 8 octets on the wire
+            version='a1c12fba91de',
+            vendor_id='BCM',
+            total_tcont_buffer_number=128
+        )
+
+        # Full object
+        self.assertEqual(e.serialize(),
+                         '\x04BCMX1234a1c12fba91de\x00\x00BCM\x00\x80')
+
+        # Explicit mask with valid values
+        self.assertEqual(e.serialize(0x800), 'BCM\x00')
+        self.assertEqual(e.serialize(0x6800), '\x04BCMX1234BCM\x00')
+
+        # Referring to an unfilled field is regarded as error
+        self.assertRaises(OmciUninitializedFieldError, e.serialize, 0xc00)
+
+    def test_omci_mask_value_gen(self):
+        cls = CircuitPack
+        self.assertEqual(cls.mask_for('vendor_id'), 0x800)
+        self.assertEqual(
+            cls.mask_for('vendor_id', 'bridged_or_ip_ind'), 0x900)
+
+    reference_get_request_hex = (
+        '00 00 49 0a'
+        '00 06 01 01'
+        '08 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 28'.replace(' ', '')
+    )
+    reference_get_request_raw = hex2raw(reference_get_request_hex)
+
+    reference_get_response_hex = (
+        '00 00 29 0a'
+        '00 06 01 01'
+        '00 08 00 50'
+        '4d 43 53 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 00'
+        '00 00 00 28'.replace(' ', '')
+    )
+    reference_get_response_raw = hex2raw(reference_get_response_hex)
+
+    def test_omci_frame_serialization(self):
+
+        frame = OmciFrame(
+            transaction_id=0,
+            message_type=OmciGet.message_id,
+            omci_message=OmciGet(
+                entity_class=CircuitPack.class_id,
+                entity_id=0x101,
+                attributes_mask=CircuitPack.mask_for('vendor_id')
+            )
+        )
+        self.assertEqual(hexify(str(frame)), self.reference_get_request_hex)
+
+    def test_omci_frame_deserialization_no_data(self):
+        frame = OmciFrame(self.reference_get_request_raw)
+        self.assertEqual(frame.transaction_id, 0)
+        self.assertEqual(frame.message_type, 0x49)
+        self.assertEqual(frame.omci, 10)
+        self.assertEqual(frame.omci_message.entity_class, 0x6)
+        self.assertEqual(frame.omci_message.entity_id, 0x101)
+        self.assertEqual(frame.omci_message.attributes_mask, 0x800)
+        self.assertEqual(frame.omci_trailer, 0x28)
+
+    def test_omci_frame_deserialization_with_data(self):
+        frame = OmciFrame(self.reference_get_response_raw)
+        self.assertEqual(frame.transaction_id, 0)
+        self.assertEqual(frame.message_type, 0x29)
+        self.assertEqual(frame.omci, 10)
+        self.assertEqual(frame.omci_message.success_code, 0x0)
+        self.assertEqual(frame.omci_message.entity_class, 0x6)
+        self.assertEqual(frame.omci_message.entity_id, 0x101)
+        self.assertEqual(frame.omci_message.attributes_mask, 0x800)
+        self.assertEqual(frame.omci_trailer, 0x28)
+
+    def test_entity_attribute_deserialization(self):
+        pass
+
+
+class TestSelectMessageGeneration(TestCase):
+
+    def assertGeneratedFrameEquals(self, frame, ref):
+        assert isinstance(frame, Packet)
+        serialized_hexified_frame = hexify(str(frame)).upper()
+        ref = ref.upper()
+        if serialized_hexified_frame != ref:
+            self.fail('Mismatch:\nReference:\n{}\nGenerated (bad):\n{}'.format(
+                ref, serialized_hexified_frame
+            ))
+
+    def test_mib_reset_message_serialization(self):
+        ref = '00014F0A000200000000000000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=1,
+            message_type=OmciMibReset.message_id,
+            omci_message=OmciMibReset(
+                entity_class=OntData.class_id
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_gal_ethernet_profile(self):
+        ref = '0002440A011000010030000000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=2,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=GalEthernetProfile.class_id,
+                entity_id=1,
+                data=dict(
+                    max_gem_payload_size=48
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_tcont_1(self):
+        ref = '0003480A010680008000040000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            alloc_id=0x400
+        )
+        frame = OmciFrame(
+            transaction_id=3,
+            message_type=OmciSet.message_id,
+            omci_message=OmciSet(
+                entity_class=Tcont.class_id,
+                entity_id=0x8000,
+                attributes_mask=Tcont.mask_for(*data.keys()),
+                data=data
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_tcont_2(self):
+        ref = '0004480A010680018000040100000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            alloc_id=0x401
+        )
+        frame = OmciFrame(
+            transaction_id=4,
+            message_type=OmciSet.message_id,
+            omci_message=OmciSet(
+                entity_class=Tcont.class_id,
+                entity_id=0x8001,
+                attributes_mask=Tcont.mask_for(*data.keys()),
+                data=data
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_8021p_mapper_service_profile(self):
+        ref = '0007440A00828000ffffffffffffffff' \
+              'ffffffffffffffffffff000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=7,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=Ieee8021pMapperServiceProfile.class_id,
+                entity_id=0x8000,
+                data=dict(
+                    tp_pointer=OmciNullPointer,
+                    interwork_tp_pointer_for_p_bit_priority_0=OmciNullPointer,
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_mac_bridge_service_profile(self):
+        ref = '000B440A002D02010001008000140002' \
+              '000f0001000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=11,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=MacBridgeServiceProfile.class_id,
+                entity_id=0x201,
+                data=dict(
+                    spanning_tree_ind=False,
+                    learning_ind=True,
+                    priority=0x8000,
+                    max_age=20 * 256,
+                    hello_time=2 * 256,
+                    forward_delay=15 * 256,
+                    unknown_mac_address_discard=True
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_gem_port_network_ctp(self):
+        ref = '000C440A010C01000400800003010000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=12,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=GemPortNetworkCtp.class_id,
+                entity_id=0x100,
+                data=dict(
+                    port_id=0x400,
+                    tcont_pointer=0x8000,
+                    direction=3,
+                    traffic_management_pointer_upstream=0x100
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_multicast_gem_interworking_tp(self):
+        ref = '0011440A011900060104000001000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=17,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=MulticastGemInterworkingTp.class_id,
+                entity_id=0x6,
+                data=dict(
+                    gem_port_network_ctp_pointer=0x104,
+                    interworking_option=0,
+                    service_profile_pointer=0x1,
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_gem_inteworking_tp(self):
+        ref = '0012440A010A80010100058000000000' \
+              '01000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=18,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=GemInterworkingTp.class_id,
+                entity_id=0x8001,
+                data=dict(
+                    gem_port_network_ctp_pointer=0x100,
+                    interworking_option=5,
+                    service_profile_pointer=0x8000,
+                    interworking_tp_pointer=0x0,
+                    gal_profile_pointer=0x1
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_8021p_mapper_service_profile(self):
+        ref = '0016480A008280004000800100000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            interwork_tp_pointer_for_p_bit_priority_0=0x8001
+        )
+        frame = OmciFrame(
+            transaction_id=22,
+            message_type=OmciSet.message_id,
+            omci_message=OmciSet(
+                entity_class=Ieee8021pMapperServiceProfile.class_id,
+                entity_id=0x8000,
+                attributes_mask=Ieee8021pMapperServiceProfile.mask_for(
+                    *data.keys()),
+                data=data
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_mac_bridge_port_configuration_data(self):
+        ref = '001A440A002F21010201020380000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=26,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=MacBridgePortConfigurationData.class_id,
+                entity_id=0x2101,
+                data=dict(
+                    bridge_id_pointer=0x201,
+                    port_num=2,
+                    tp_type=3,
+                    tp_pointer=0x8000
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_vlan_tagging_filter_data(self):
+        ref = '001F440A005421010400000000000000' \
+              '00000000000000000000000000000000' \
+              '100100000000000000000028'
+        vlan_filter_list = [0] * 12
+        vlan_filter_list[0] = 0x0400
+
+        frame = OmciFrame(
+            transaction_id=31,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=VlanTaggingFilterData.class_id,
+                entity_id=0x2101,
+                data=dict(
+                    vlan_filter_list=vlan_filter_list,
+                    forward_operation=0x10,
+                    number_of_entries=1
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_extended_vlan_tagging_operation_configuration_data(self):
+        ref = '0023440A00AB02020A04010000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=35,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=
+                    ExtendedVlanTaggingOperationConfigurationData.class_id,
+                entity_id=0x202,
+                data=dict(
+                    association_type=10,
+                    associated_me_pointer=0x401
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_extended_vlan_tagging_operation_configuration_data(self):
+        ref = '0024480A00AB02023800810081000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            input_tpid=0x8100,
+            output_tpid=0x8100,
+            downstream_mode=0,  # inverse of upstream
+        )
+        frame = OmciFrame(
+            transaction_id=36,
+            message_type=OmciSet.message_id,
+            omci_message=OmciSet(
+                entity_class=\
+                    ExtendedVlanTaggingOperationConfigurationData.class_id,
+                entity_id=0x202,
+                attributes_mask= \
+                    ExtendedVlanTaggingOperationConfigurationData.mask_for(
+                        *data.keys()),
+                data=data
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_extended_vlan_tagging_1(self):
+        ref = '0025480A00AB02020400f00000008200' \
+              '5000402f000000082004000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            received_frame_vlan_tagging_operation_table=\
+                VlanTaggingOperation(
+                    filter_outer_priority=15,
+                    filter_inner_priority=8,
+                    filter_inner_vid=1024,
+                    filter_inner_tpid_de=5,
+                    filter_ether_type=0,
+                    treatment_tags_to_remove=1,
+                    pad3=2,
+                    treatment_outer_priority=15,
+                    treatment_inner_priority=8,
+                    treatment_inner_vid=1024,
+                    treatment_inner_tpid_de=4
+                )
+        )
+        frame = OmciFrame(
+            transaction_id=37,
+            message_type=OmciSet.message_id,
+            omci_message=OmciSet(
+                entity_class=\
+                    ExtendedVlanTaggingOperationConfigurationData.class_id,
+                entity_id=0x202,
+                attributes_mask= \
+                    ExtendedVlanTaggingOperationConfigurationData.mask_for(
+                        *data.keys()),
+                data=data
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_set_extended_vlan_tagging_2(self):
+        ref = '0026480A00AB02020400F00000008200' \
+              'd000402f00000008200c000000000000' \
+              '000000000000000000000028'
+        data = dict(
+            received_frame_vlan_tagging_operation_table=
+                VlanTaggingOperation(
+                    filter_outer_priority=15,
+                    filter_inner_priority=8,
+                    filter_inner_vid=1025,
+                    filter_inner_tpid_de=5,
+                    filter_ether_type=0,
+                    treatment_tags_to_remove=1,
+                    pad3=2,
+                    treatment_outer_priority=15,
+                    treatment_inner_priority=8,
+                    treatment_inner_vid=1025,
+                    treatment_inner_tpid_de=4
+                )
+        )
+        frame = OmciFrame(
+            transaction_id=38,
+            message_type=OmciSet.message_id,
+            omci_message=OmciSet(
+                entity_class=
+                    ExtendedVlanTaggingOperationConfigurationData.class_id,
+                entity_id=0x202,
+                attributes_mask=
+                    ExtendedVlanTaggingOperationConfigurationData.mask_for(
+                        *data.keys()),
+                data=data
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_create_mac_bridge_port_configuration_data2(self):
+        ref = '0029440A002F02010201010b04010000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=41,
+            message_type=OmciCreate.message_id,
+            omci_message=OmciCreate(
+                entity_class=MacBridgePortConfigurationData.class_id,
+                entity_id=0x201,
+                data=dict(
+                    bridge_id_pointer=0x201,
+                    encapsulation_methods=0,
+                    port_num=1,
+                    port_priority=0,
+                    port_path_cost=0,
+                    port_spanning_tree_in=0,
+                    lan_fcs_ind=0,
+                    tp_type=11,
+                    tp_pointer=0x401,
+                    mac_learning_depth=0
+                )
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+        frame2 = OmciFrame(hex2raw(ref))
+        self.assertEqual(frame2, frame)
+
+    def test_mib_upload(self):
+        ref = '00304D0A000200000000000000000000' \
+              '00000000000000000000000000000000' \
+              '000000000000000000000028'
+        frame = OmciFrame(
+            transaction_id=48,
+            message_type=OmciMibUpload.message_id,
+            omci_message=OmciMibUpload(
+                entity_class=OntData.class_id
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_parse_enh_security_avc(self):
+        refs = [
+            "0000110a014c0000008000202020202020202020202020202020202020202020"
+            "2020202020202020000000280be43cf4"
+        ]
+        for i, data in enumerate(refs):
+            frame = OmciFrame(hex2raw(data))
+            omci = frame.omci_message
+            # frame.show()
+
+    def test_parse_alarm_message(self):
+        refs = [
+            "0000100a00050101000000000000000000000000000000000000000000000000"
+            "0000000220000000000000280be43cf4"
+        ]
+        for i, data in enumerate(refs):
+            frame = OmciFrame(hex2raw(data))
+            omci = frame.omci_message
+            # frame.show()
+
+    def test_parse_results(self):
+        refs = [
+            "00001B0a014c0000008000202020202020202020202020202020202020202020"
+            "2020202020202020000000280be43cf4"
+        ]
+        for i, data in enumerate(refs):
+            frame = OmciFrame(hex2raw(data))
+            omci = frame.omci_message
+            # frame.show()
+
+    def test_parsing_mib_upload_next_responses(self):
+        refs = [
+            "00032e0a00020000000200008000000000000000000000000000000000000000"
+            "00000000000000000000002828ce00e2",
+            "00042e0a0002000000050101f0002f2f05202020202020202020202020202020"
+            "202020202000000000000028d4eb4bdf",
+            "00052e0a00020000000501010f80202020202020202020202020202020202020"
+            "2020000000000000000000282dbe4b44",
+            "00062e0a0002000000050104f000303001202020202020202020202020202020"
+            "202020202000000000000028ef1b035b",
+            "00072e0a00020000000501040f80202020202020202020202020202020202020"
+            "202000000000000000000028fec29135",
+            "00082e0a0002000000050180f000f8f801202020202020202020202020202020"
+            "202020202000000000000028fd4e0b07",
+            "00092e0a00020000000501800f80202020202020202020202020202020202020"
+            "2020000000000000000000283306b3c0",
+            "000a2e0a0002000000060101f0002f054252434d123456780000000000000000"
+            "00000000000c000000000028585c2083",
+            "000b2e0a00020000000601010f004252434d0000000000000000000000000000"
+            "0000000000000000000000284f0e82b9",
+            "000c2e0a000200000006010100f8202020202020202020202020202020202020"
+            "202000000000000000000028e68bdb63",
+            "000d2e0a00020000000601010004000000000000000000000000000000000000"
+            "00000000000000000000002857bc2730",
+            "000e2e0a0002000000060104f00030014252434d123456780000000000000000"
+            "00000000000c000000000028afe656f5",
+            "000f2e0a00020000000601040f004252434d0000000000000000000000000000"
+            "000000000000000000000028f8f6db74",
+            "00102e0a000200000006010400f8202020202020202020202020202020202020"
+            "202000000800000000000028064fc177",
+            "00112e0a00020000000601040004000000000000000000000000000000000000"
+            "0000000000000000000000285a5c0841",
+            "00122e0a0002000000060180f000f8014252434d123456780000000000000000"
+            "00000000000c0000000000286826eafe",
+            "00132e0a00020000000601800f004252434d0000000000000000000000000000"
+            "0000000000000000000000281c4b7033",
+            "00142e0a000200000006018000f8202020202020202020202020202020202020"
+            "202000084040000000000028ac144eb3",
+            "00152e0a00020000000601800004000000000000000000000000000000000000"
+            "0000000000000000000000280a81a9a7",
+            "00162e0a0002000000070000f0003530323247574f3236363230303301010100"
+            "0000000000000000000000287ea42d51",
+            "00172e0a0002000000070001f0003530323247574f3236363230303300000100"
+            "000000000000000000000028b17f567f",
+            "00182e0a0002000000830000c000202020202020202020202020202020202020"
+            "2020202020200000000000280e7eebaa",
+            "00192e0a00020000008300002000202020202020202020202020202000000000"
+            "000000000000000000000028a95c03b3",
+            "001a2e0a00020000008300001000000000000000000000000000000000000000"
+            "000000000000000000000028f30515a1",
+            "001b2e0a0002000000850000ffe0000000000000000000000000000000000000"
+            "000000000000000000000028764c18de",
+            "001c2e0a0002000000860001c00000001018aaaa000000000000000000000000"
+            "000000000000000000000028ea220ce0",
+            "001d2e0a00020000008600012000000000000000000000000000000000000000"
+            "000000000000000000000028fbdb571a",
+            "001e2e0a00020000008600011f80000000000000000000000000000000000000"
+            "000000000000000000000028c2682282",
+            "001f2e0a00020000008600010078000000000000000000000000000000000000"
+            "0000000000000000000000289c4809b1",
+            "00202e0a00020000008600010004000000000000000000000000000000000000"
+            "000000000000000000000028d174a7d6",
+            "00212e0a00020000008600010002000000000000000000000000000000000000"
+            "0000000000000000000000288f353976",
+            "00222e0a0002000001000000e0004252434d0000000000000000000000000000"
+            "4252434d123456780000002803bbceb6",
+            "00232e0a00020000010000001f80000000000000000000000000000000000000"
+            "0000000000000000000000281b9674db",
+            "00242e0a00020000010000000040000000000000000000000000000000000000"
+            "000000000000000000000028b1050b9b",
+            "00252e0a00020000010000000038000000000000000000000000000003000000"
+            "0000000000000000000000288266645e",
+            "00262e0a0002000001010000f80042564d344b3030425241303931352d303038"
+            "3300b3000001010000000028837d624f",
+            "00272e0a000200000101000007f8000000010020027c85630016000030000000"
+            "00000000000000000000002896c707e1",
+            "00282e0a0002000001068000e00000ff01010000000000000000000000000000"
+            "00000000000000000000002811acb324",
+            "00292e0a0002000001068001e00000ff01010000000000000000000000000000"
+            "00000000000000000000002823ad6aa9",
+            "002a2e0a0002000001068002e00000ff01010000000000000000000000000000"
+            "000000000000000000000028a290efd9",
+            "002b2e0a0002000001068003e00000ff01010000000000000000000000000000"
+            "000000000000000000000028af893357",
+            "002c2e0a0002000001068004e00000ff01010000000000000000000000000000"
+            "000000000000000000000028901141a3",
+            "002d2e0a0002000001068005e00000ff01010000000000000000000000000000"
+            "000000000000000000000028c4398bcc",
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+            "000000000000000000000028b908637e",
+            "00fc2e0a000200000116803af000800700000200000000000000000000000000"
+            "0000000000000000000000285b66e6fa",
+            "00fd2e0a000200000116803bf000800700000200000000000000000000000000"
+            "00000000000000000000002855c10393",
+            "00fe2e0a000200000116803cf000800700000200000000000000000000000000"
+            "0000000000000000000000283e94c57d",
+            "00ff2e0a000200000116803df000800700000200000000000000000000000000"
+            "0000000000000000000000284347e7f0",
+            "01002e0a000200000116803ef000800700000200000000000000000000000000"
+            "000000000000000000000028be66429d",
+            "01012e0a000200000116803ff000800700000200000000000000000000000000"
+            "0000000000000000000000284f7db145",
+            "01022e0a0002000001490401c000000000000000000000000000000000000000"
+            "000000000000000000000028470aa043",
+            "01032e0a00020000014904012000000000000000000000000000000000000000"
+            "000000000000000000000028a6bc6e48",
+            "01042e0a00020000014904011800ffffffff0000000000000000000000000000"
+            "000000000000000000000028f747c739",
+        ]
+        mask = "%5s %9s %20s %9s %s"
+        print
+        print mask % ("seq", "class_id", "class", "instance", "attributes")
+        for i, data in enumerate(refs):
+            frame = OmciFrame(hex2raw(data))
+            omci = frame.omci_message
+            # frame.show()
+            print mask % (
+                str(i),
+                str(omci.object_entity_class),
+                entity_id_to_class_map[omci.object_entity_class].__name__,
+                '0x%x' % omci.object_entity_id,
+                '\n                                               '.join(
+                    '%s: %s' % (k, v) for k, v in omci.object_data.items())
+            )
+
+    def test_onu_reboot(self):
+        ref = '0016590a01000000000000000000000000000'\
+              '0000000000000000000000000000000000000'\
+              '00000000000028'
+
+        frame = OmciFrame(
+            transaction_id=22,
+            message_type=OmciReboot.message_id,
+            omci_message=OmciReboot(
+                entity_class=OntG.class_id,
+                 entity_id=0
+            )
+        )
+        self.assertGeneratedFrameEquals(frame, ref)
+
+    def test_omci_entity_ids(self):
+        from pyvoltha.adapters.extensions.omci.omci_entities import entity_classes
+
+        # For Entity Classes that have a Managed Entity ID with Set-By-Create
+        # access, verify that the attribute name matches 'managed_entity_id'
+        #
+        # This is critical for the MIB Synchronizer state machine as it needs
+        # to backfill Set-By-Create attributes when it sees a Create response
+        # but it needs to ignore the 'managed_entity_id' attribute (by name).
+
+        for entity in entity_classes:
+            mei_attr = entity.attributes[0]
+            self.assertIsNotNone(mei_attr)
+            self.assertTrue(AA.SBC not in mei_attr.access or
+                            mei_attr.field.name == 'managed_entity_id')
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/extensions/omci/test_omci_cc.py b/test/unit/extensions/omci/test_omci_cc.py
new file mode 100644
index 0000000..7c1491d
--- /dev/null
+++ b/test/unit/extensions/omci/test_omci_cc.py
@@ -0,0 +1,1233 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import binascii
+from common.frameio.frameio import hexify
+from twisted.python.failure import Failure
+from unittest import TestCase, main, skip
+from mock.mock_adapter_agent import MockAdapterAgent
+from mock.mock_onu_handler import MockOnuHandler
+from mock.mock_olt_handler import MockOltHandler
+from mock.mock_onu import MockOnu
+from pyvoltha.adapters.extensions.omci.omci_defs import *
+from pyvoltha.adapters.extensions.omci.omci_frame import *
+from pyvoltha.adapters.extensions.omci.omci_entities import *
+from pyvoltha.adapters.extensions.omci.omci_me import ExtendedVlanTaggingOperationConfigurationDataFrame
+from pyvoltha.adapters.extensions.omci.omci_cc import OMCI_CC, UNKNOWN_CLASS_ATTRIBUTE_KEY,\
+    MAX_OMCI_REQUEST_AGE
+
+DEFAULT_OLT_DEVICE_ID = 'default_olt_mock'
+DEFAULT_ONU_DEVICE_ID = 'default_onu_mock'
+DEFAULT_PON_ID = 0
+DEFAULT_ONU_ID = 0
+DEFAULT_ONU_SN = 'TEST00000001'
+
+OP = EntityOperations
+RC = ReasonCodes
+
+successful = False
+error_reason = None
+
+
+def chunk(indexable, chunk_size):
+    for i in range(0, len(indexable), chunk_size):
+        yield indexable[i:i + chunk_size]
+
+
+def hex2raw(hex_string):
+    return ''.join(chr(int(byte, 16)) for byte in chunk(hex_string, 2))
+
+
+class TestOmciCc(TestCase):
+    """
+    Test the Open OMCI Communication channels
+
+    Note also added some testing of MockOnu behaviour since its behaviour during more
+    complicated unit/integration tests may be performed in the future.
+    """
+    def setUp(self, let_msg_timeout=False):
+        self.adapter_agent = MockAdapterAgent()
+
+    def tearDown(self):
+        if self.adapter_agent is not None:
+            self.adapter_agent.tearDown()
+
+    def setup_mock_olt(self, device_id=DEFAULT_OLT_DEVICE_ID):
+        handler = MockOltHandler(self.adapter_agent, device_id)
+        self.adapter_agent.add_device(handler.device)
+        return handler
+
+    def setup_mock_onu(self, parent_id=DEFAULT_OLT_DEVICE_ID,
+                       device_id=DEFAULT_ONU_DEVICE_ID,
+                       pon_id=DEFAULT_PON_ID,
+                       onu_id=DEFAULT_ONU_ID,
+                       serial_no=DEFAULT_ONU_SN):
+        handler = MockOnuHandler(self.adapter_agent, parent_id, device_id, pon_id, onu_id)
+        handler.serial_number = serial_no
+        onu = MockOnu(serial_no, self.adapter_agent, handler.device_id) \
+            if serial_no is not None else None
+        handler.onu_mock = onu
+        return handler
+
+    def setup_one_of_each(self, timeout_messages=False):
+        # Most tests will use at lease one or more OLT and ONU
+        self.olt_handler = self.setup_mock_olt()
+        self.onu_handler = self.setup_mock_onu(parent_id=self.olt_handler.device_id)
+        self.onu_device = self.onu_handler.onu_mock
+        self.adapter_agent.timeout_the_message = timeout_messages
+
+        self.adapter_agent.add_child_device(self.olt_handler.device,
+                                            self.onu_handler.device)
+
+    def _is_omci_frame(self, results, omci_msg_type):
+        assert isinstance(results, OmciFrame), 'Not OMCI Frame'
+        assert 'omci_message' in results.fields, 'Not OMCI Frame'
+        if omci_msg_type is not None:
+            assert isinstance(results.fields['omci_message'], omci_msg_type)
+        return results
+
+    def _check_status(self, results, value):
+        if value is not None: assert results is not None, 'unexpected emtpy message'
+        status = results.fields['omci_message'].fields['success_code']
+        assert status == value,\
+            'Unexpected Status Code. Got {}, Expected: {}'.format(status, value)
+        return results
+
+    def _check_mib_sync(self, results, value):
+        assert self.onu_device.mib_data_sync == value, \
+            'Unexpected MIB DATA Sync value. Got {}, Expected: {}'.format(
+                self.onu_device.mib_data_sync, value)
+        return results
+
+    def _check_stats(self, results, _, stat, expected):
+        snapshot = self._snapshot_stats()
+        assert snapshot[stat] == expected, \
+            'Invalid statistic "{}". Got {}, Expected: {}'.format(stat,
+                                                                  snapshot[stat],
+                                                                  expected)
+        return results
+
+    def _check_value_equal(self, results, name, value, expected):
+        assert value == expected, \
+            'Value "{}" not equal. Got {}, Expected: {}'.format(name, value,
+                                                                expected)
+        return results
+
+    def _default_errback(self, failure):
+        from twisted.internet.defer import TimeoutError
+        assert isinstance(failure.type, type(TimeoutError))
+
+    def _snapshot_stats(self):
+        omci_cc = self.onu_handler.omci_cc
+        return {
+            'tx_frames': omci_cc.tx_frames,
+            'rx_frames': omci_cc.rx_frames,
+            'rx_unknown_tid': omci_cc.rx_unknown_tid,
+            'rx_onu_frames': omci_cc.rx_onu_frames,
+            'rx_onu_discards': omci_cc.rx_onu_discards,
+            'rx_timeouts': omci_cc.rx_timeouts,
+            'rx_unknown_me': omci_cc.rx_unknown_me,
+            'rx_late': omci_cc.rx_late,
+            'tx_errors': omci_cc.tx_errors,
+            'consecutive_errors': omci_cc.consecutive_errors,
+            'reply_min': omci_cc.reply_min,
+            'reply_max': omci_cc.reply_max,
+            'reply_average': omci_cc.reply_average,
+            'hp_tx_queue_len': omci_cc.hp_tx_queue_len,
+            'lp_tx_queue_len': omci_cc.lp_tx_queue_len,
+            'max_hp_tx_queue': omci_cc.max_hp_tx_queue,
+            'max_lp_tx_queue': omci_cc._max_lp_tx_queue,
+        }
+
+    def test_default_init(self):
+        self.setup_one_of_each()
+        # Test default construction of OMCI_CC as well as
+        # various other parameter settings
+        omci_cc = self.onu_handler.omci_cc
+
+        # No device directly associated
+        self.assertIsNotNone(omci_cc._adapter_agent)
+        self.assertIsNone(omci_cc._proxy_address)
+
+        # No outstanding requests
+        self.assertEqual(len(omci_cc._pending[OMCI_CC.LOW_PRIORITY]), 0)
+        self.assertEqual(len(omci_cc._pending[OMCI_CC.HIGH_PRIORITY]), 0)
+
+        # No active requests
+        self.assertIsNone(omci_cc._tx_request[OMCI_CC.LOW_PRIORITY])
+        self.assertIsNone(omci_cc._tx_request[OMCI_CC.HIGH_PRIORITY])
+
+        # Flags/properties
+        self.assertFalse(omci_cc.enabled)
+
+        # Statistics
+        self.assertEqual(omci_cc.tx_frames, 0)
+        self.assertEqual(omci_cc.rx_frames, 0)
+        self.assertEqual(omci_cc.rx_unknown_tid, 0)
+        self.assertEqual(omci_cc.rx_onu_frames, 0)
+        self.assertEqual(omci_cc.rx_onu_discards, 0)
+        self.assertEqual(omci_cc.rx_unknown_me, 0)
+        self.assertEqual(omci_cc.rx_timeouts, 0)
+        self.assertEqual(omci_cc.rx_late, 0)
+        self.assertEqual(omci_cc.tx_errors, 0)
+        self.assertEqual(omci_cc.consecutive_errors, 0)
+        self.assertNotEquals(omci_cc.reply_min, 0.0)
+        self.assertEqual(omci_cc.reply_max, 0.0)
+        self.assertEqual(omci_cc.reply_average, 0.0)
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0.0)
+        self.assertEqual(omci_cc.max_hp_tx_queue, 0.0)
+        self.assertEqual(omci_cc._max_hp_tx_queue, 0.0)
+        self.assertEqual(omci_cc._max_lp_tx_queue, 0.0)
+
+    def test_enable_disable(self):
+        self.setup_one_of_each()
+
+        # Test enable property
+        omci_cc = self.onu_handler.omci_cc
+
+        # Initially disabled
+        self.assertFalse(omci_cc.enabled)
+        omci_cc.enabled = False
+        self.assertFalse(omci_cc.enabled)
+
+        omci_cc.enabled = True
+        self.assertTrue(omci_cc.enabled)
+        self.assertIsNotNone(omci_cc._proxy_address)
+        self.assertEqual(len(omci_cc._pending[OMCI_CC.LOW_PRIORITY]), 0)
+        self.assertEqual(len(omci_cc._pending[OMCI_CC.HIGH_PRIORITY]), 0)
+
+        omci_cc.enabled = True      # Should be a NOP
+        self.assertTrue(omci_cc.enabled)
+        self.assertIsNotNone(omci_cc._proxy_address)
+        self.assertEqual(len(omci_cc._pending[OMCI_CC.LOW_PRIORITY]), 0)
+        self.assertEqual(len(omci_cc._pending[OMCI_CC.HIGH_PRIORITY]), 0)
+
+        omci_cc.enabled = False
+        self.assertFalse(omci_cc.enabled)
+        self.assertIsNone(omci_cc._proxy_address)
+
+    def test_rx_discard_if_disabled(self):
+        # ME without a known decoder
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = False
+        snapshot = self._snapshot_stats()
+
+        msg = '00fc2e0a00020000ff780000e00000010000000c' \
+              '0000000000000000000000000000000000000000' \
+              '00000028105a86ef'
+
+        omci_cc.receive_message(hex2raw(msg))
+
+        # Note: No counter increments
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'])
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'])
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'])
+
+    def test_message_send_get(self):
+        # Various tests of sending an OMCI message and it either
+        # getting a response or send catching some errors of
+        # importance
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+        mib_data_sync = self.onu_device.mib_data_sync
+
+        # GET
+        # d = omci_cc.send()  # TODO: Implement
+        #
+        # d.addCallbacks(self._is_omci_frame, self._default_errback)
+        # d.addCallback(self._check_status, RC.Success.value)
+        # d.addCallback(self._check_mib_sync, mib_data_sync)
+        #
+        # d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        # d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        # d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+
+        # return d
+
+    def test_message_send_set(self):
+        # Various tests of sending an OMCI message and it either
+        # getting a response or send catching some errors of
+        # importance
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+        mib_data_sync = self.onu_device.mib_data_sync
+
+        # SET
+        # d = omci_cc.send()  # TODO: Implement
+        #
+        # d.addCallbacks(self._is_omci_frame, self._default_errback)
+        # d.addCallback(self._check_status, RC.Success.value)
+        # d.addCallback(self._check_mib_sync, mib_data_sync + 1 if mib_data_sync < 255 else 1)
+        #
+        # d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        # d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        # d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+
+        # return d
+        #
+        # # Also test mib_data_sync rollover.  255 -> 1  (zero reserved)
+        #
+        # self.onu_device.mib_data_sync = 255
+        # # SET
+        # self.assertTrue(True)  # TODO: Implement (copy previous one here)
+        # self.assertEqual(1, self.onu_device.mib_data_sync)
+
+    def test_message_send_create(self):
+        # Various tests of sending an OMCI message and it either
+        # getting a response or send catching some errors of
+        # importance
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+        mib_data_sync = self.onu_device.mib_data_sync
+
+        # Create
+        # d = omci_cc.send()  # TODO: Implement
+        #
+        # d.addCallbacks(self._is_omci_frame, self._default_errback)
+        # d.addCallback(self._check_status, RC.Success.value)
+        # d.addCallback(self._check_mib_sync, mib_data_sync + 1 if mib_data_sync < 255 else 1)
+        #
+        # d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        # d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        # d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+
+        # return d
+
+    def test_message_send_delete(self):
+        # Various tests of sending an OMCI message and it either
+        # getting a response or send catching some errors of
+        # importance
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+        mib_data_sync = self.onu_device.mib_data_sync
+
+        # Delete
+        # d = omci_cc.send()  # TODO: Implement
+        #
+        # d.addCallbacks(self._is_omci_frame, self._default_errback)
+        # d.addCallback(self._check_status, RC.Success.value)
+        # d.addCallback(self._check_mib_sync, mib_data_sync + 1 if mib_data_sync < 255 else 1)
+        #
+        # d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        # d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        # d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+
+        # return d
+
+    def test_message_send_mib_reset(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        self.onu_device.mib_data_sync = 10
+        snapshot = self._snapshot_stats()
+
+        # Successful MIB Reset
+        d = omci_cc.send_mib_reset(timeout=1.0)
+
+        d.addCallbacks(self._is_omci_frame, self._default_errback)
+        d.addCallback(self._check_status, RC.Success)
+        d.addCallback(self._check_mib_sync, 0)
+
+        d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        d.addCallback(self._check_stats, snapshot, 'rx_late', snapshot['rx_late'])
+        d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+        return d
+
+    def test_message_send_mib_upload(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+        mib_data_sync = self.onu_device.mib_data_sync
+
+        # MIB Upload
+        d = omci_cc.send_mib_upload(timeout=1.0)
+
+        d.addCallbacks(self._is_omci_frame, self._default_errback)
+        d.addCallback(self._check_status, RC.Success)
+        d.addCallback(self._check_mib_sync, mib_data_sync)
+
+        # TODO: MIB Upload Results specific tests here
+
+        d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        d.addCallback(self._check_stats, snapshot, 'rx_late', snapshot['rx_late'])
+        d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+        return d
+
+    def test_message_send_mib_upload_next(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+        mib_data_sync = self.onu_device.mib_data_sync
+
+        # # MIB Upload Next
+        # d = omci_cc.send_mib_upload_next(0, timeout=1.0)
+        #
+        # d.addCallbacks(self._is_omci_frame, self._default_errback)
+        # d.addCallback(self._check_status, RC.Success)
+        # d.addCallback(self._check_mib_sync, mib_data_sync)
+        #
+        # # TODO: MIB Upload Next Results specific tests here
+        #
+        # d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        # d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        # d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        # d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+        # return d
+
+    def test_message_send_no_timeout(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        self.onu_device.mib_data_sync = 10
+        snapshot = self._snapshot_stats()
+
+        d = omci_cc.send_mib_reset(timeout=0)
+        d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'])
+        d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        return d
+
+    def test_message_send_bad_timeout(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        self.onu_device.mib_data_sync = 10
+        snapshot = self._snapshot_stats()
+
+        d = omci_cc.send_mib_reset(timeout=MAX_OMCI_REQUEST_AGE + 1)
+        d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'])
+        d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'])
+        d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'] + 1)
+        return d
+
+    def test_message_send_not_a_frame(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        self.onu_device.mib_data_sync = 10
+        snapshot = self._snapshot_stats()
+
+        d = omci_cc.send('hello world', timeout=1)
+        d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'])
+        d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'])
+        d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'] + 1)
+        return d
+
+    def test_message_send_reboot(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # ONU Reboot
+        d = omci_cc.send_reboot(timeout=1.0)
+
+        d.addCallbacks(self._is_omci_frame, self._default_errback)
+        d.addCallback(self._check_status, RC.Success)
+
+        d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'])
+        d.addCallback(self._check_stats, snapshot, 'rx_late', snapshot['rx_late'])
+        d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+        return d
+
+    def test_message_send_with_omci_disabled(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        self.assertFalse(omci_cc.enabled)
+
+        # Successful MIB Reset
+        d = omci_cc.send_mib_reset(timeout=1.0)
+
+        def success_is_bad(_results):
+            assert False, 'This test should throw a failure/error'
+
+        def fail_fast(_failure):
+            pass
+            return None
+
+        d.addCallbacks(success_is_bad, fail_fast)
+        return d
+
+    def test_message_send_get_with_latency(self):
+        # Various tests of sending an OMCI message and it either
+        # getting a response or send catching some errors of
+        # importance
+        self.setup_one_of_each()
+        self.olt_handler.latency = 0.500    # 1/2 second
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+
+        # Successful MIB Reset
+        d = omci_cc.send_mib_reset(timeout=1.0)
+
+        d.addCallbacks(self._is_omci_frame, self._default_errback)
+        d.addCallback(self._check_status, RC.Success)
+
+        def check_latency_values(_):
+            self.assertGreaterEqual(omci_cc.reply_min, self.olt_handler.latency)
+            self.assertGreaterEqual(omci_cc.reply_max, self.olt_handler.latency)
+            self.assertGreaterEqual(omci_cc.reply_average, self.olt_handler.latency)
+
+        d.addCallback(check_latency_values)
+        return d
+
+    def test_message_failures(self):
+        # Various tests of sending an OMCI message and it fails
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        self.assertEqual(omci_cc.tx_frames, 0)
+        self.assertEqual(omci_cc.rx_frames, 0)
+        self.assertEqual(omci_cc.rx_unknown_tid, 0)
+        self.assertEqual(omci_cc.rx_timeouts, 0)
+        self.assertEqual(omci_cc.rx_late, 0)
+        self.assertEqual(omci_cc.tx_errors, 0)
+
+        # # Class ID not found
+        # d = omci_cc.send_mib_reset(timeout=1.0)
+        # self.assertTrue(True)  # TODO: Implement
+        # todo: Test non-zero consecutive errors
+        #
+        # # Instance ID not found
+        # d = omci_cc.send_mib_reset(timeout=1.0)
+        # self.assertTrue(True)  # TODO: Implement
+        # todo: Test non-zero consecutive errors
+        #
+        # # PON is disabled
+        # d = omci_cc.send_mib_reset(timeout=1.0)
+        # self.assertTrue(True)  # TODO: Implement
+        # todo: Test non-zero consecutive errors
+        #
+        # # ONU is disabled
+        # d = omci_cc.send_mib_reset(timeout=1.0)
+        # self.assertTrue(True)  # TODO: Implement
+        # todo: Test non-zero consecutive errors
+        #
+        # # ONU is not activated
+        # d = omci_cc.send_mib_reset(timeout=1.0)
+        # self.assertTrue(True)  # TODO: Implement
+        # todo: Test non-zero consecutive errors
+
+        # TODO: make OLT send back an unknown TID (
+
+        # todo: Test non-zero consecutive errors
+        # todo: Send a good frame
+        # todo: Test zero consecutive errors
+        # d.addCallback(self._check_value_equal, 'consecutive_errors', 0, omci_cc.consecutive_errors)
+
+    def test_rx_unknown_me(self):
+        # ME without a known decoder
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # This is the ID ------+
+        #                      v
+        msg = '00fc2e0a00020000ff780000e00000010000000c' \
+              '0000000000000000000000000000000000000000' \
+              '00000028'
+
+        omci_cc.receive_message(hex2raw(msg))
+
+        # Note: After successful frame decode, a lookup of the corresponding request by
+        #       TID is performed. None should be found, so we should see the Rx Unknown TID
+        #       increment.
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'])
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'] + 1)
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'] + 1)
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'])
+        self.assertEqual(omci_cc.consecutive_errors, 0)
+
+    def test_rx_decode_unknown_me(self):
+        # ME without a known decoder
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # This is a MIB Upload Next Response. Where we would probably first see an
+        # unknown Class ID
+        #
+        # This is the ID ------+
+        #                      v
+        msg = '00fc2e0a00020000ff780001e000'
+        blob = '00010000000c0000000000000000000000000000000000000000'
+        msg += blob + '00000028'
+
+        # Dig into the internal method so we can get the returned frame
+        frame = omci_cc._decode_unknown_me(hex2raw(msg))
+
+        self.assertEqual(frame.fields['transaction_id'], 0x00fc)
+        self.assertEqual(frame.fields['message_type'], 0x2e)
+
+        omci_fields = frame.fields['omci_message'].fields
+
+        self.assertEqual(omci_fields['entity_class'], 0x0002)
+        self.assertEqual(omci_fields['entity_id'], 0x00)
+        self.assertEqual(omci_fields['object_entity_class'], 0x0ff78)
+        self.assertEqual(omci_fields['object_entity_id'], 0x01)
+        self.assertEqual(omci_fields['object_attributes_mask'], 0xe000)
+
+        data_fields = omci_fields['object_data']
+
+        decoded_blob = data_fields.get(UNKNOWN_CLASS_ATTRIBUTE_KEY)
+        self.assertIsNotNone(decoded_blob)
+        self.assertEqual(decoded_blob, blob)
+
+    def test_flush(self):
+        # Test flush of autonomous ONU queues
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # TODO: add more
+        self.assertTrue(True)  # TODO: Implement
+
+    def test_avc_rx(self):
+        # Test flush of autonomous ONU queues
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # TODO: add more
+        self.assertTrue(True)  # TODO: Implement
+
+    def test_rx_discard_if_disabled(self):
+        # ME without a known decoder
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = False
+        snapshot = self._snapshot_stats()
+
+        msg = '00fc2e0a00020000ff780000e00000010000000c' \
+              '0000000000000000000000000000000000000000' \
+              '00000028105a86ef'
+
+        omci_cc.receive_message(hex2raw(msg))
+
+        # Note: No counter increments
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'])
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'])
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'])
+
+    def test_omci_alarm_decode(self):
+        """
+        This test covers an issue discovered in Sept 2018 (JIRA-1213).  It was
+        an exception during frame decode.
+        """
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # Frame from the JIRA issue
+        msg = '0000100a000b0102800000000000000000000000' \
+              '0000000000000000000000000000000000000015' \
+              '000000282d3ae0a6'
+
+        _results = omci_cc.receive_message(hex2raw(msg))
+
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'])
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'])
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'] + 1)
+        self.assertEqual(omci_cc.rx_onu_discards, snapshot['rx_onu_discards'])
+
+    def test_omci_avc_decode(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # Frame from the JIRA issue
+        msg = '0000110a0007000080004d4c2d33363236000000' \
+              '0000000020202020202020202020202020202020' \
+              '00000028'
+
+        _results = omci_cc.receive_message(hex2raw(msg))
+
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'])
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'])
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'] + 1)
+        self.assertEqual(omci_cc.rx_onu_discards, snapshot['rx_onu_discards'])
+
+    def test_omci_unknown_onu_decode(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # Frame from the JIRA issue
+        msg = '0000190a0007000080004d4c2d33363236000000' \
+              '0000000020202020202020202020202020202020' \
+              '00000028'
+
+        _results = omci_cc.receive_message(hex2raw(msg))
+
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'])
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'])
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'] + 1)
+        self.assertEqual(omci_cc.rx_onu_discards, snapshot['rx_onu_discards'] + 1)
+
+    def test_omci_bad_frame_decode(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # Frame from the JIRA issue
+        msg = '0020190a0007000080004d4c2d33363236000000' \
+              '0000000000000028'
+
+        _results = omci_cc.receive_message(hex2raw(msg))
+        # NOTE: Currently do not increment any Rx Discard counters, just throw it away
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'] + 1)
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'] + 1)
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'])
+        self.assertEqual(omci_cc.rx_onu_discards, snapshot['rx_onu_discards'])
+
+    def test_rx_decode_onu_g(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        msg = '001e2e0a0002000001000000e000424657530000' \
+              '0000000000000000000000324246575300107496' \
+              '00000028e7fb4a91'
+
+        omci_cc.receive_message(hex2raw(msg))
+
+        # Note: No counter increments
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'] + 1)
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'] + 1)
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'])
+
+    def test_rx_decode_extvlantagging(self):
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        msg = '030a290a00ab0201000d00000000001031323334' \
+              '3536373839303132333435363738393031323334' \
+              '000000281166d283'
+
+        omci_cc.receive_message(hex2raw(msg))
+
+        self.assertEqual(omci_cc.rx_frames, snapshot['rx_frames'] + 1)
+        self.assertEqual(omci_cc.rx_unknown_me, snapshot['rx_unknown_me'])
+        self.assertEqual(omci_cc.rx_unknown_tid, snapshot['rx_unknown_tid'] + 1)
+        self.assertEqual(omci_cc.rx_onu_frames, snapshot['rx_onu_frames'])
+
+    def _check_vlan_tag_op(self, results, attr, expected):
+        omci_msg = results.fields['omci_message']
+        data = omci_msg.fields['data']
+        val = data[attr]
+        self.assertEqual(expected, val)
+        return results
+
+    @skip('for unknown omci failure')
+    #@deferred()
+    def test_rx_table_get_extvlantagging(self):
+        self.setup_one_of_each()
+
+        onu = self.onu_handler.onu_mock
+        entity_id = 1
+        vlan_tag_op1 = VlanTaggingOperation(
+                                     filter_outer_priority=15,
+                                     filter_outer_vid=4096,
+                                     filter_outer_tpid_de=2,
+                                     filter_inner_priority=15,
+                                     filter_inner_vid=4096,
+                                     filter_inner_tpid_de=0,
+                                     filter_ether_type=0,
+                                     treatment_tags_to_remove=0,
+                                     treatment_outer_priority=15,
+                                     treatment_outer_vid=1234,
+                                     treatment_outer_tpid_de=0,
+                                     treatment_inner_priority=0,
+                                     treatment_inner_vid=4091,
+                                     treatment_inner_tpid_de=4,
+                                 )
+        vlan_tag_op2 = VlanTaggingOperation(
+                                     filter_outer_priority=14,
+                                     filter_outer_vid=1234,
+                                     filter_outer_tpid_de=5,
+                                     filter_inner_priority=1,
+                                     filter_inner_vid=2345,
+                                     filter_inner_tpid_de=1,
+                                     filter_ether_type=0,
+                                     treatment_tags_to_remove=1,
+                                     treatment_outer_priority=15,
+                                     treatment_outer_vid=2222,
+                                     treatment_outer_tpid_de=1,
+                                     treatment_inner_priority=1,
+                                     treatment_inner_vid=3333,
+                                     treatment_inner_tpid_de=5,
+                                 )
+        vlan_tag_op3 = VlanTaggingOperation(
+                                     filter_outer_priority=13,
+                                     filter_outer_vid=55,
+                                     filter_outer_tpid_de=1,
+                                     filter_inner_priority=7,
+                                     filter_inner_vid=4567,
+                                     filter_inner_tpid_de=1,
+                                     filter_ether_type=0,
+                                     treatment_tags_to_remove=1,
+                                     treatment_outer_priority=2,
+                                     treatment_outer_vid=1111,
+                                     treatment_outer_tpid_de=1,
+                                     treatment_inner_priority=1,
+                                     treatment_inner_vid=3131,
+                                     treatment_inner_tpid_de=5,
+                                 )
+        tbl = [vlan_tag_op1, vlan_tag_op2, vlan_tag_op3]
+        tblstr = str(vlan_tag_op1) + str(vlan_tag_op2) + str(vlan_tag_op3)
+
+        onu._omci_response[OP.Get.value][ExtendedVlanTaggingOperationConfigurationData.class_id] = {
+            entity_id: OmciFrame(transaction_id=0,
+                         message_type=OmciGetResponse.message_id,
+                         omci_message=OmciGetResponse(
+                               entity_class=ExtendedVlanTaggingOperationConfigurationData.class_id,
+                               entity_id=1,
+                               success_code=RC.Success.value,
+                               attributes_mask=ExtendedVlanTaggingOperationConfigurationData.mask_for(
+                                   'received_frame_vlan_tagging_operation_table'),
+                               data={'received_frame_vlan_tagging_operation_table': 16 * len(tbl)}
+                         ))
+        }
+
+        rsp1 = binascii.a2b_hex(hexify(tblstr[0:OmciTableField.PDU_SIZE]))
+        rsp2 = binascii.a2b_hex(hexify(tblstr[OmciTableField.PDU_SIZE:]))
+        onu._omci_response[OP.GetNext.value][ExtendedVlanTaggingOperationConfigurationData.class_id] = {
+            entity_id: {0: {'failures':2,
+                            'frame':OmciFrame(transaction_id=0,
+                                 message_type=OmciGetNextResponse.message_id,
+                                 omci_message=OmciGetNextResponse(
+                                     entity_class=ExtendedVlanTaggingOperationConfigurationData.class_id,
+                                     entity_id=1,
+                                     success_code=RC.Success.value,
+                                     attributes_mask=ExtendedVlanTaggingOperationConfigurationData.mask_for(
+                                         'received_frame_vlan_tagging_operation_table'),
+                                     data={'received_frame_vlan_tagging_operation_table': rsp1
+                                     }
+                         ))},
+                        1: OmciFrame(transaction_id=0,
+                         message_type=OmciGetNextResponse.message_id,
+                         omci_message=OmciGetNextResponse(
+                             entity_class=ExtendedVlanTaggingOperationConfigurationData.class_id,
+                             entity_id=1,
+                             success_code=RC.Success.value,
+                             attributes_mask=ExtendedVlanTaggingOperationConfigurationData.mask_for(
+                                 'received_frame_vlan_tagging_operation_table'),
+                             data={'received_frame_vlan_tagging_operation_table': rsp2
+                             }
+                         ))
+                       }
+        }
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+
+        msg = ExtendedVlanTaggingOperationConfigurationDataFrame(
+            entity_id,
+            attributes={'received_frame_vlan_tagging_operation_table':True}
+        )
+
+        snapshot = self._snapshot_stats()
+
+        frame = msg.get()
+        d = omci_cc.send(frame, timeout=5.0)
+
+        d.addCallbacks(self._is_omci_frame, self._default_errback, [OmciGetResponse])
+        d.addCallback(self._check_status, RC.Success)
+
+        d.addCallback(self._check_stats, snapshot, 'tx_frames', snapshot['tx_frames'] + 5)
+        d.addCallback(self._check_stats, snapshot, 'rx_frames', snapshot['rx_frames'] + 3)
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_tid', snapshot['rx_unknown_tid'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_frames', snapshot['rx_onu_frames'])
+        d.addCallback(self._check_stats, snapshot, 'rx_onu_discards', snapshot['rx_onu_discards'])
+        d.addCallback(self._check_stats, snapshot, 'rx_unknown_me', snapshot['rx_unknown_me'])
+        d.addCallback(self._check_stats, snapshot, 'rx_timeouts', snapshot['rx_timeouts'] + 2)
+        d.addCallback(self._check_stats, snapshot, 'rx_late', snapshot['rx_late'])
+        d.addCallback(self._check_stats, snapshot, 'tx_errors', snapshot['tx_errors'])
+        d.addCallback(self._check_stats, snapshot, 'consecutive_errors', 0)
+        d.addCallback(self._check_vlan_tag_op, 'received_frame_vlan_tagging_operation_table', tbl)
+
+        return d
+
+    ##################################################################
+    # Start of tests specific to new stop_and_wait changes
+    #
+    def test_message_send_low_priority(self):
+        # self.setup_one_of_each(timeout_messages=True)
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # MIB Upload
+        d = omci_cc.send_mib_upload(timeout=1.0, high_priority=False)
+        d.addCallback(self._check_stats, snapshot, 'lp_tx_queue_len', snapshot['lp_tx_queue_len'])
+        d.addCallback(self._check_stats, snapshot, 'hp_tx_queue_len', snapshot['hp_tx_queue_len'])
+        d.addCallback(self._check_stats, snapshot, 'max_lp_tx_queue', snapshot['max_lp_tx_queue'] + 1)
+        d.addCallback(self._check_stats, snapshot, 'max_hp_tx_queue', snapshot['max_hp_tx_queue'])
+
+        # Flush to get ready for next test (one frame queued)
+        omci_cc.flush()
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        self.adapter_agent.timeout_the_message = True
+        omci_cc.send_mib_upload(timeout=1.0, high_priority=False)
+        omci_cc.send_mib_upload(timeout=1.0, high_priority=False)
+
+        self.assertEqual(omci_cc.lp_tx_queue_len, 1)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.max_lp_tx_queue, 1)
+        self.assertEqual(omci_cc.max_hp_tx_queue, 0)
+
+        # Flush to get ready for next test (two queued and new max)
+        omci_cc.flush()
+        omci_cc.send_mib_upload(timeout=1.0, high_priority=False)
+        omci_cc.send_mib_upload(timeout=1.0, high_priority=False)
+        omci_cc.send_mib_upload(timeout=1.0, high_priority=False)
+
+        self.assertEqual(omci_cc.lp_tx_queue_len, 2)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.max_lp_tx_queue, 2)
+        self.assertEqual(omci_cc.max_hp_tx_queue, 0)
+
+    def test_message_send_high_priority(self):
+        # self.setup_one_of_each(timeout_messages=True)
+        self.setup_one_of_each()
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+        snapshot = self._snapshot_stats()
+
+        # MIB Upload
+        d = omci_cc.send_mib_upload(high_priority=True)
+        d.addCallback(self._check_stats, snapshot, 'lp_tx_queue_len', snapshot['lp_tx_queue_len'])
+        d.addCallback(self._check_stats, snapshot, 'hp_tx_queue_len', snapshot['hp_tx_queue_len'])
+        d.addCallback(self._check_stats, snapshot, 'max_lp_tx_queue', snapshot['max_lp_tx_queue'])
+        d.addCallback(self._check_stats, snapshot, 'max_hp_tx_queue', snapshot['max_hp_tx_queue'] + 1)
+
+        # Flush to get ready for next test (one frame queued)
+        omci_cc.flush()
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        self.adapter_agent.timeout_the_message = True
+        omci_cc.send_mib_upload(high_priority=True)
+        omci_cc.send_mib_upload(high_priority=True)
+
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 1)
+        self.assertEqual(omci_cc.max_lp_tx_queue, 0)
+        self.assertEqual(omci_cc.max_hp_tx_queue, 1)
+
+        # Flush to get ready for next test (two queued and new max)
+        omci_cc.flush()
+        omci_cc.send_mib_upload(high_priority=True)
+        omci_cc.send_mib_upload(high_priority=True)
+        omci_cc.send_mib_upload(high_priority=True)
+
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 2)
+        self.assertEqual(omci_cc.max_lp_tx_queue, 0)
+        self.assertEqual(omci_cc.max_hp_tx_queue, 2)
+
+    def test_message_send_and_cancel(self):
+        global error_reason
+        global successful
+        # Do not send messages to adapter_agent
+        self.setup_one_of_each(timeout_messages=True)
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+
+        def success(_results):
+            global successful
+            successful = True
+
+        def failure(reason):
+            global error_reason
+            error_reason = reason
+
+        def notCalled(reason):
+            assert isinstance(reason, Failure), 'Should not be called with success'
+
+        # Cancel one that is actively being sent
+        d = omci_cc.send_mib_upload(high_priority=False)
+        d.addCallbacks(success, failure)
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        d.cancel()
+        self.assertIsInstance(error_reason, Failure)
+        self.assertFalse(successful)
+        self.assertTrue(d.called)
+
+        self.assertEqual(omci_cc.max_lp_tx_queue, 1)
+        self.assertEqual(omci_cc.max_hp_tx_queue, 0)
+
+        # Flush to get ready for next test (one running, one queued, cancel the
+        # running one, so queued runs)
+        omci_cc.flush()
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        error_reason = None
+        d1 = omci_cc.send_mib_upload(high_priority=False)
+        d2 = omci_cc.send_mib_upload(high_priority=False)
+        d1.addCallbacks(success, failure)
+        d2.addCallbacks(notCalled, notCalled)
+        self.assertEqual(omci_cc.lp_tx_queue_len, 1)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        d1.cancel()
+        self.assertIsInstance(error_reason, Failure)
+        self.assertFalse(successful)
+        self.assertTrue(d1.called)
+        self.assertFalse(d2.called)
+
+        self.assertEqual(omci_cc.max_lp_tx_queue, 1)
+        self.assertEqual(omci_cc.max_hp_tx_queue, 0)
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        # Flush to get ready for next test (one running, one queued, cancel the queued one)
+
+        omci_cc.flush()
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        error_reason = None
+        d3 = omci_cc.send_mib_upload(timeout=55, high_priority=False)
+        d4 = omci_cc.send_mib_upload(timeout=55, high_priority=False)
+        d5 = omci_cc.send_mib_upload(timeout=55, high_priority=False)
+        d3.addCallbacks(notCalled, notCalled)
+        d4.addCallbacks(success, failure)
+        d5.addCallbacks(notCalled, notCalled)
+        self.assertEqual(omci_cc.lp_tx_queue_len, 2)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        d4.cancel()
+        self.assertIsInstance(error_reason, Failure)
+        self.assertFalse(successful)
+        self.assertFalse(d3.called)
+        self.assertTrue(d4.called)
+        self.assertFalse(d5.called)
+
+    def test_message_send_low_and_high_priority(self):
+        self.setup_one_of_each(timeout_messages=True)
+
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+
+        omci_cc.send_mib_reset(high_priority=False)
+        omci_cc.send_mib_reset(high_priority=True)
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        omci_cc.flush()
+        self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+        omci_cc.send_mib_reset(high_priority=False)
+        omci_cc.send_mib_reset(high_priority=True)
+        omci_cc.send_mib_reset(high_priority=False)
+        omci_cc.send_mib_reset(high_priority=True)
+        self.assertEqual(omci_cc.lp_tx_queue_len, 1)
+        self.assertEqual(omci_cc.hp_tx_queue_len, 1)
+
+    def test_no_sw_download_and_mib_upload_at_same_time(self):
+        # Section B.2.3 of ITU G.988-2017 specifies that a MIB
+        # upload or software download at a given priority level
+        # is not allowed while a similar action in the other
+        # priority level is in progress. Relates to possible memory
+        # consumption/needs on the ONU.
+        #
+        # OMCI_CC only checks if the commands are currently in
+        # progress. ONU should reject messages if the upload/download
+        # is in progress (but not an active request is in progress).
+
+        self.setup_one_of_each(timeout_messages=True)
+        omci_cc = self.onu_handler.omci_cc
+        omci_cc.enabled = True
+
+        mib_upload_msgs = [omci_cc.send_mib_upload,
+                           # omci_cc.send_mib_upload_next
+                           ]
+        sw_download_msgs = [omci_cc.send_start_software_download,
+                            # omci_cc.send_download_section,
+                            # omci_cc.send_end_software_download
+                            ]
+
+        for upload in mib_upload_msgs:
+            for download in sw_download_msgs:
+                self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+                upload(high_priority=False)
+                download(1, 1, 1, high_priority=True)    # Should stall send-next 50mS
+                self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 1)
+
+                omci_cc.flush()
+                self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+                upload(high_priority=True)
+                download(1, 1, 1, high_priority=False)    # Should stall send-next 50mS
+                self.assertEqual(omci_cc.lp_tx_queue_len, 1)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+                omci_cc.flush()
+                self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+                download(1, 1, 1, high_priority=False)
+                upload(high_priority=True)    # Should stall send-next 50mS
+                self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 1)
+
+                omci_cc.flush()
+                self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+                download(1, 1, 1, high_priority=True)
+                upload(high_priority=False)    # Should stall send-next 50mS)
+                self.assertEqual(omci_cc.lp_tx_queue_len, 1)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+                omci_cc.flush()
+                self.assertEqual(omci_cc.lp_tx_queue_len, 0)
+                self.assertEqual(omci_cc.hp_tx_queue_len, 0)
+
+    # Some more ideas for tests that we could add
+    # Send explicit tid that is not valid
+    #       - Look at top of 'Send' method and test all the error conditions could may hit
+
+    # Send multiple and have the OLT proxy throw an exception. Should call errback and
+    # schedule remainder in queue to still tx.
+
+    # Send a frame and then inject a response and test the RX logic out, including late
+    # rx and retries by the OMCI_CC transmitter.
+
+
+if __name__ == '__main__':
+    main()
diff --git a/test/unit/extensions/omci/test_omci_configuration.py b/test/unit/extensions/omci/test_omci_configuration.py
new file mode 100644
index 0000000..1cdfd21
--- /dev/null
+++ b/test/unit/extensions/omci/test_omci_configuration.py
@@ -0,0 +1,484 @@
+#
+# Copyright 2018 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from hashlib import md5
+from unittest import TestCase, main
+from nose.tools import raises
+from nose.twistedtools import deferred
+from copy import deepcopy
+from mock.mock_adapter_agent import MockAdapterAgent, MockCore
+from mock.mock_onu_handler import MockOnuHandler
+from mock.mock_olt_handler import MockOltHandler
+from mock.mock_onu import MockOnu
+from pyvoltha.adapters.extensions.omci.openomci_agent import OpenOMCIAgent, OpenOmciAgentDefaults
+from pyvoltha.adapters.extensions.omci.onu_configuration import OMCCVersion
+from pyvoltha.adapters.extensions.omci.omci_defs import *
+from pyvoltha.adapters.extensions.omci.omci_entities import OntG, Ont2G, Cardholder, \
+    CircuitPack, SoftwareImage, AniG, UniG
+from pyvoltha.common.utils.asleep import asleep
+from pyvoltha.adapters.extensions.omci.database.mib_db_dict import MibDbVolatileDict
+from datetime import datetime
+
+DEFAULT_OLT_DEVICE_ID = 'default_olt_mock'
+DEFAULT_ONU_DEVICE_ID = 'default_onu_mock'
+DEFAULT_PON_ID = 0
+DEFAULT_ONU_ID = 0
+DEFAULT_ONU_SN = 'TEST00000001'
+
+OP = EntityOperations
+RC = ReasonCodes
+
+
+class TestOmciConfiguration(TestCase):
+    """
+    Test the OMCI read-only Configuration library methods
+    """
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+
+        custom = deepcopy(OpenOmciAgentDefaults)
+        custom['mib-synchronizer']['database'] = MibDbVolatileDict
+
+        self.omci_agent = OpenOMCIAgent(MockCore, support_classes=custom)
+        self.omci_agent.start()
+
+    def tearDown(self):
+        if self.omci_agent is not None:
+            self.omci_agent.stop()
+
+        if self.adapter_agent is not None:
+            self.adapter_agent.tearDown()
+
+    def setup_mock_olt(self, device_id=DEFAULT_OLT_DEVICE_ID):
+        handler = MockOltHandler(self.adapter_agent, device_id)
+        self.adapter_agent.add_device(handler.device)
+        return handler
+
+    def setup_mock_onu(self, parent_id=DEFAULT_OLT_DEVICE_ID,
+                       device_id=DEFAULT_ONU_DEVICE_ID,
+                       pon_id=DEFAULT_PON_ID,
+                       onu_id=DEFAULT_ONU_ID,
+                       serial_no=DEFAULT_ONU_SN):
+        handler = MockOnuHandler(self.adapter_agent, parent_id, device_id, pon_id, onu_id)
+        handler.serial_number = serial_no
+        onu = MockOnu(serial_no, self.adapter_agent, handler.device_id) \
+            if serial_no is not None else None
+        handler.onu_mock = onu
+        return handler
+
+    def setup_one_of_each(self):
+        # Most tests will use at lease one or more OLT and ONU
+        self.olt_handler = self.setup_mock_olt()
+        self.onu_handler = self.setup_mock_onu(parent_id=self.olt_handler.device_id)
+        self.onu_device = self.onu_handler.onu_mock
+
+        self.adapter_agent.add_child_device(self.olt_handler.device,
+                                            self.onu_handler.device)
+        # Add device to OpenOMCI
+        self.onu_device = self.omci_agent.add_device(DEFAULT_ONU_DEVICE_ID,
+                                                     self.adapter_agent)
+
+        # Allow timeout trigger support while in disabled state for mib sync
+        # to make tests run cleanly while profiling.
+        self.onu_device.mib_synchronizer.machine.add_transition('timeout', 'disabled', 'disabled')
+
+    def not_called(self, _reason):
+        assert False, 'Should never be called'
+
+    def _stuff_database(self, entries):
+        """
+        Stuff the MIB database with some entries that we will use during tests
+        """
+        database = self.onu_device.mib_synchronizer._database
+
+        # Stuff a value into last in sync. This makes it look like
+        # the ONU has been in in-sync at least once.
+        self.onu_device.mib_synchronizer.last_mib_db_sync = datetime.utcnow()
+
+        # Entry is a tuple of (class_id, instance_id, {attributes})
+        for entry in entries:
+            database.set(DEFAULT_ONU_DEVICE_ID, entry[0], entry[1], entry[2])
+
+    def test_OMCCVersion(self):
+        for key, value in OMCCVersion.__members__.items():
+            self.assertEqual(OMCCVersion.to_enum(OMCCVersion[key].value), value)
+
+        self.assertEqual(OMCCVersion.to_enum(-1), OMCCVersion.Unknown)
+
+    @deferred(timeout=50000)
+    def test_defaults(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        @raises(AssertionError)
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+            # Should raise assertion if never been synchronized
+            config.version
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs. This is a waiting
+        # Async task from when the OpenOMCIAgent was started. But also start the
+        # device so that it's queued async state machines can run as well
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_but_empty(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        def stuff_db(_results):
+            self._stuff_database([])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            # On no Class ID for requested property, None should be
+            # returned
+            self.assertIsNone(config.version)
+            self.assertIsNone(config.traffic_management_option)
+            self.assertIsNone(config.onu_survival_time)
+            self.assertIsNone(config.equipment_id)
+            self.assertIsNone(config.omcc_version)
+            self.assertIsNone(config.vendor_product_code)
+            self.assertIsNone(config.total_priority_queues)
+            self.assertIsNone(config.total_traffic_schedulers)
+            self.assertIsNone(config.total_gem_ports)
+            self.assertIsNone(config.uptime)
+            self.assertIsNone(config.connectivity_capability)
+            self.assertIsNone(config.qos_configuration_flexibility)
+            self.assertIsNone(config.priority_queue_scale_factor)
+            self.assertIsNone(config.cardholder_entities)
+            self.assertIsNone(config.circuitpack_entities)
+            self.assertIsNone(config.software_images)
+            self.assertIsNone(config.ani_g_entities)
+            self.assertIsNone(config.uni_g_entities)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_with_ont_g_values(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        version = 'abcDEF'
+        tm_opt = 2
+        onu_survival = 123
+
+        def stuff_db(_results):
+            self._stuff_database([
+                (OntG.class_id, 0, {'version': version,
+                                    'traffic_management_options': tm_opt,
+                                    'ont_survival_time': onu_survival
+                                    })])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            # On no Class ID for requested property, None should be
+            # returned
+            self.assertEqual(config.version, version)
+            self.assertEqual(config.traffic_management_option, tm_opt)
+            self.assertEqual(config.onu_survival_time, onu_survival)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_with_ont_2g_values(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        equip_id = 'br-549'
+        omcc_ver = OMCCVersion.G_988_2012
+        vend_code = 0x1234
+        queues = 64
+        scheds = 8
+        gem_ports = 24
+        uptime = 12345
+        conn_capp = 0x00aa
+        qos_flex = 0x001b
+        queue_scale = 1
+
+        def stuff_db(_results):
+            self._stuff_database([
+                (Ont2G.class_id, 0, {'equipment_id': equip_id,
+                                     'omcc_version': omcc_ver.value,
+                                     'vendor_product_code': vend_code,
+                                     'total_priority_queue_number': queues,
+                                     'total_traffic_scheduler_number': scheds,
+                                     'total_gem_port_id_number': gem_ports,
+                                     'sys_uptime': uptime,
+                                     'connectivity_capability': conn_capp,
+                                     'qos_configuration_flexibility': qos_flex,
+                                     'priority_queue_scale_factor': queue_scale
+                                     })])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            self.assertEqual(config.equipment_id, equip_id)
+            self.assertEqual(config.omcc_version, omcc_ver)
+            self.assertEqual(config.vendor_product_code, vend_code)
+            self.assertEqual(config.total_priority_queues, queues)
+            self.assertEqual(config.total_traffic_schedulers, scheds)
+            self.assertEqual(config.total_gem_ports, gem_ports)
+            self.assertEqual(config.uptime, uptime)
+            self.assertEqual(config.connectivity_capability, conn_capp)
+            self.assertEqual(config.qos_configuration_flexibility, qos_flex)
+            self.assertEqual(config.priority_queue_scale_factor, queue_scale)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_with_cardholder_values(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        ch_entity = 0x102
+        unit_type = 255
+        clie_code = 'abc123'
+        prot_ptr = 0
+
+        def stuff_db(_results):
+            self._stuff_database([
+            (Cardholder.class_id, ch_entity, {'actual_plugin_unit_type': unit_type,
+                                              'actual_equipment_id': clie_code,
+                                              'protection_profile_pointer': prot_ptr,
+                                              })])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            cardholder = config.cardholder_entities
+            self.assertTrue(isinstance(cardholder, dict))
+            self.assertEqual(len(cardholder), 1)
+            self.assertEqual(cardholder[ch_entity]['entity-id'], ch_entity)
+            self.assertEqual(cardholder[ch_entity]['is-single-piece'], ch_entity >= 256)
+            self.assertEqual(cardholder[ch_entity]['slot-number'], ch_entity & 0xFF)
+            self.assertEqual(cardholder[ch_entity]['actual-plug-in-type'], unit_type)
+            self.assertEqual(cardholder[ch_entity]['actual-equipment-id'], clie_code)
+            self.assertEqual(cardholder[ch_entity]['protection-profile-ptr'], prot_ptr)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_with_circuitpack_values(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        cp_entity = 0x100
+        num_ports = 1
+        serial_num = 'ABCD01234'
+        cp_version = '1234ABCD'
+        vendor_id = 'AB-9876'
+        tconts = 2
+        pqueues = 64
+        sched_count = 8
+
+        def stuff_db(_results):
+            self._stuff_database([
+                (CircuitPack.class_id, cp_entity, {'number_of_ports': num_ports,
+                                                   'serial_number': serial_num,
+                                                   'version': cp_version,
+                                                   'vendor_id': vendor_id,
+                                                   'total_tcont_buffer_number': tconts,
+                                                   'total_priority_queue_number': pqueues,
+                                                   'total_traffic_scheduler_number': sched_count,
+                                                   })])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            circuitpack = config.circuitpack_entities
+            self.assertTrue(isinstance(circuitpack, dict))
+            self.assertEqual(len(circuitpack), 1)
+            self.assertEqual(circuitpack[cp_entity]['entity-id'], cp_entity)
+            self.assertEqual(circuitpack[cp_entity]['number-of-ports'], num_ports)
+            self.assertEqual(circuitpack[cp_entity]['serial-number'], serial_num)
+            self.assertEqual(circuitpack[cp_entity]['version'], cp_version)
+            self.assertEqual(circuitpack[cp_entity]['vendor-id'], vendor_id)
+            self.assertEqual(circuitpack[cp_entity]['total-tcont-count'], tconts)
+            self.assertEqual(circuitpack[cp_entity]['total-priority-queue-count'], pqueues)
+            self.assertEqual(circuitpack[cp_entity]['total-traffic-sched-count'], sched_count)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_with_software_values(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        sw_entity = 0x200
+        sw_version = 'Beta-0.0.2'
+        sw_hash = md5("just_a_test").hexdigest()
+        prod_code = 'MySoftware'
+        sw_active = True
+        sw_committed = True
+        sw_valid = True
+
+        def stuff_db(_results):
+            self._stuff_database([
+                (SoftwareImage.class_id, sw_entity, {'version': sw_version,
+                                                     'is_committed': sw_committed,
+                                                     'is_active': sw_active,
+                                                     'is_valid': sw_valid,
+                                                     'product_code': prod_code,
+                                                     'image_hash': sw_hash,
+                                                     })])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            images = config.software_images
+            self.assertTrue(isinstance(images, list))
+            self.assertEqual(len(images), 1)
+            self.assertEqual(images[0].name, 'running-revision' if sw_active else 'candidate-revision')
+            self.assertEqual(images[0].version, sw_version)
+            self.assertEqual(images[0].is_active, 1 if sw_active else 0)
+            self.assertEqual(images[0].is_committed, 1 if sw_committed else 0)
+            self.assertEqual(images[0].is_valid,  1 if sw_valid else 0)
+            self.assertEqual(images[0].hash, sw_hash)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_with_ani_g_values(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        entity_id = 0x0106
+        tconts = 4
+        dba_report = 4
+
+        def stuff_db(_results):
+            self._stuff_database([
+                (AniG.class_id, entity_id, {'total_tcont_number': tconts,
+                                            'piggyback_dba_reporting': dba_report
+                                            })
+            ])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            anig = config.ani_g_entities
+            self.assertTrue(isinstance(anig, dict))
+            self.assertEqual(len(anig), 1)
+
+            self.assertEqual(anig[entity_id]['entity-id'], entity_id)
+            self.assertEqual(anig[entity_id]['slot-number'], (entity_id >> 8) & 0xff)
+            self.assertEqual(anig[entity_id]['port-number'], entity_id & 0xff)
+            self.assertEqual(anig[entity_id]['total-tcont-count'], tconts)
+            self.assertEqual(anig[entity_id]['piggyback-dba-reporting'], dba_report)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+    @deferred(timeout=5)
+    def test_in_sync_with_uni_g_values(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.omci_agent.device_ids()), 1)
+
+        entity_id = 0x4321
+        mgmt_cap = 0
+
+        def stuff_db(_results):
+            self._stuff_database([
+                (UniG.class_id, entity_id, {'management_capability': mgmt_cap})
+            ])
+
+        def do_my_tests(_results):
+            config = self.onu_device.configuration
+
+            unig = config.uni_g_entities
+            self.assertTrue(isinstance(unig, dict))
+            self.assertEqual(len(unig), 1)
+
+            self.assertEqual(unig[entity_id]['entity-id'], entity_id)
+            self.assertEqual(unig[entity_id]['management-capability'], mgmt_cap)
+
+        # No capabilities available until started
+        self.assertIsNone(self.onu_device.configuration)
+
+        # Yield context so that MIB Database callLater runs.
+        self.onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(stuff_db, self.not_called)
+        d.addCallbacks(do_my_tests, self.not_called)
+        return d
+
+
+if __name__ == '__main__':
+    main()
+
diff --git a/test/unit/extensions/omci/test_onu_device_entry.py b/test/unit/extensions/omci/test_onu_device_entry.py
new file mode 100644
index 0000000..9e917f6
--- /dev/null
+++ b/test/unit/extensions/omci/test_onu_device_entry.py
@@ -0,0 +1,256 @@
+#
+# Copyright 2018 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from unittest import TestCase, main
+from nose.tools import assert_raises
+from nose.twistedtools import deferred
+from copy import deepcopy
+from mock.mock_adapter_agent import MockAdapterAgent, MockCore
+from mock.mock_onu_handler import MockOnuHandler
+from mock.mock_olt_handler import MockOltHandler
+from mock.mock_onu import MockOnu
+from pyvoltha.adapters.extensions.omci.openomci_agent import OpenOMCIAgent, OpenOmciAgentDefaults
+from pyvoltha.adapters.extensions.omci.omci_defs import *
+from pyvoltha.common.utils.asleep import asleep
+from pyvoltha.adapters.extensions.omci.database.mib_db_api import DEVICE_ID_KEY, CLASS_ID_KEY, CREATED_KEY, \
+    MODIFIED_KEY, MDS_KEY, LAST_SYNC_KEY, VERSION_KEY, DatabaseStateError
+from pyvoltha.adapters.extensions.omci.database.mib_db_dict import MibDbVolatileDict
+
+
+DEFAULT_OLT_DEVICE_ID = 'default_olt_mock'
+DEFAULT_ONU_DEVICE_ID = 'default_onu_mock'
+DEFAULT_PON_ID = 0
+DEFAULT_ONU_ID = 0
+DEFAULT_ONU_SN = 'TEST00000001'
+
+OP = EntityOperations
+RC = ReasonCodes
+
+
+def chunk(indexable, chunk_size):
+    for i in range(0, len(indexable), chunk_size):
+        yield indexable[i:i + chunk_size]
+
+
+def hex2raw(hex_string):
+    return ''.join(chr(int(byte, 16)) for byte in chunk(hex_string, 2))
+
+
+class TestOnuDeviceEntry(TestCase):
+    """
+    Test the ONU Device Entry methods
+    """
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+
+        custom = deepcopy(OpenOmciAgentDefaults)
+        custom['mib-synchronizer']['database'] = MibDbVolatileDict
+
+        self.agent = OpenOMCIAgent(MockCore, support_classes=custom)
+        self.agent.start()
+
+    def tearDown(self):
+        if self.agent is not None:
+            self.agent.stop()
+
+        if self.adapter_agent is not None:
+            self.adapter_agent.tearDown()
+
+    def setup_mock_olt(self, device_id=DEFAULT_OLT_DEVICE_ID):
+        handler = MockOltHandler(self.adapter_agent, device_id)
+        self.adapter_agent.add_device(handler.device)
+        return handler
+
+    def setup_mock_onu(self, parent_id=DEFAULT_OLT_DEVICE_ID,
+                       device_id=DEFAULT_ONU_DEVICE_ID,
+                       pon_id=DEFAULT_PON_ID,
+                       onu_id=DEFAULT_ONU_ID,
+                       serial_no=DEFAULT_ONU_SN):
+        handler = MockOnuHandler(self.adapter_agent, parent_id, device_id, pon_id, onu_id)
+        handler.serial_number = serial_no
+        onu = MockOnu(serial_no, self.adapter_agent, handler.device_id) \
+            if serial_no is not None else None
+        handler.onu_mock = onu
+        return handler
+
+    def setup_one_of_each(self):
+        # Most tests will use at lease one or more OLT and ONU
+        self.olt_handler = self.setup_mock_olt()
+        self.onu_handler = self.setup_mock_onu(parent_id=self.olt_handler.device_id)
+        self.onu_device = self.onu_handler.onu_mock
+
+        self.adapter_agent.add_child_device(self.olt_handler.device,
+                                            self.onu_handler.device)
+
+    def test_add_remove_device(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.agent.device_ids()), 0)
+
+        onu_device = self.agent.add_device(DEFAULT_ONU_DEVICE_ID,
+                                           self.adapter_agent)
+        self.assertIsNotNone(onu_device)
+        self.assertEqual(len(self.agent.device_ids()), 1)
+        self.assertEqual(self.agent.get_device(DEFAULT_ONU_DEVICE_ID), onu_device)
+
+        # No MIB if not started
+        assert_raises(KeyError, onu_device.query_mib)
+
+        self.agent.remove_device(DEFAULT_ONU_DEVICE_ID)
+        self.assertEqual(len(self.agent.device_ids()), 1)
+
+    def test_delete_device(self):
+        self.setup_one_of_each()
+        self.assertEqual(len(self.agent.device_ids()), 0)
+
+        onu_device = self.agent.add_device(DEFAULT_ONU_DEVICE_ID,
+                                           self.adapter_agent)
+        self.assertIsNotNone(onu_device)
+        self.assertEqual(len(self.agent.device_ids()), 1)
+        self.assertEqual(self.agent.get_device(DEFAULT_ONU_DEVICE_ID), onu_device)
+        # Can delete if it was not started
+        onu_device.delete()
+        self.assertEqual(len(self.agent.device_ids()), 0)
+
+        ##########################################
+        # Delete of ONU device okay if it is started
+        onu_device = self.agent.add_device(DEFAULT_ONU_DEVICE_ID,
+                                           self.adapter_agent)
+        self.assertIsNotNone(onu_device)
+        self.assertEqual(len(self.agent.device_ids()), 1)
+        self.assertEqual(self.agent.get_device(DEFAULT_ONU_DEVICE_ID), onu_device)
+
+        # Start it and then delete it
+        onu_device.start()
+        onu_device.delete()
+        self.assertEqual(len(self.agent.device_ids()), 0)
+
+    @deferred(timeout=5)
+    def test_mib_query_fails_if_dev_not_started(self):
+        self.setup_one_of_each()
+
+        onu_device = self.agent.add_device(DEFAULT_ONU_DEVICE_ID,
+                                           self.adapter_agent)
+        self.assertIsNotNone(onu_device)
+        self.assertEqual(len(self.agent.device_ids()), 1)
+        self.assertEqual(self.agent.get_device(DEFAULT_ONU_DEVICE_ID), onu_device)
+
+        def not_called(_reason):
+            assert False, 'Should never be called'
+
+        def check_status(_results):
+            # Device not yet started. Query should fail with KeyError since
+            # ONU is not in database yet
+            assert_raises(KeyError, onu_device.query_mib)
+
+        # Yield context so that MIB Database callLater runs. This is a waiting
+        # Async task from when the OpenOMCIAgent was started.
+        d = asleep(0.2)
+        d.addCallbacks(check_status, not_called)
+
+        return d
+
+    @deferred(timeout=5)
+    def test_mib_query_ok_if_dev_started(self):
+        self.setup_one_of_each()
+
+        onu_device = self.agent.add_device(DEFAULT_ONU_DEVICE_ID,
+                                           self.adapter_agent)
+        self.assertIsNotNone(onu_device)
+        self.assertEqual(len(self.agent.device_ids()), 1)
+        self.assertEqual(self.agent.get_device(DEFAULT_ONU_DEVICE_ID), onu_device)
+
+        def not_called(_reason):
+            onu_device.stop()
+            assert False, 'Should never be called'
+
+        def check_status(_results):
+            # Device started. Query will succeed but nothing should be populated
+            # but the most basic items
+
+            results = onu_device.query_mib()
+            self.assertTrue(isinstance(results, dict))
+            self.assertEqual(results.get(DEVICE_ID_KEY), DEFAULT_ONU_DEVICE_ID)
+
+            self.assertIsNotNone(results.get(VERSION_KEY))
+            self.assertIsNotNone(results.get(CREATED_KEY))
+            self.assertIsNone(results.get(MODIFIED_KEY))        # Created! but not yet modified
+
+            self.assertEqual(results.get(MDS_KEY), 0)
+            self.assertIsNone(results.get(LAST_SYNC_KEY))
+
+            self.assertIsNone(results.get(CLASS_ID_KEY))
+
+            # Stopping still allows a query.  Note you just delete a device
+            # to clean up any associated databases
+            onu_device.stop()
+            results = onu_device.query_mib()
+            self.assertTrue(isinstance(results, dict))
+
+        # Yield context so that MIB Database callLater runs. This is a waiting
+        # Async task from when the OpenOMCIAgent was started. But also start the
+        # device so that it's queued async state machines can run as well
+        onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(check_status, not_called)
+
+        return d
+
+    @deferred(timeout=5)
+    def test_delete_scrubs_mib(self):
+        self.setup_one_of_each()
+
+        onu_device = self.agent.add_device(DEFAULT_ONU_DEVICE_ID,
+                                           self.adapter_agent)
+        self.assertIsNotNone(onu_device)
+        self.assertEqual(len(self.agent.device_ids()), 1)
+        self.assertEqual(self.agent.get_device(DEFAULT_ONU_DEVICE_ID), onu_device)
+
+        def not_called(_reason):
+            onu_device.stop()
+            assert False, 'Should never be called'
+
+        def check_status(_results):
+            # Device started. Query will succeed but nothing should be populated
+            # but the most basic items
+
+            results = onu_device.query_mib()
+            self.assertTrue(isinstance(results, dict))
+            self.assertEqual(results.get(DEVICE_ID_KEY), DEFAULT_ONU_DEVICE_ID)
+
+            # Delete should wipe out any MIB data. Note that a delete of a started
+            # or stopped ONU device is allowed.  In this case we are deleting a
+            # started ONU Device
+
+            onu_device.delete()
+            assert_raises(Exception, onu_device.query_mib)
+            # TODO: When capabilities are supported, make sure capabilities get cleared as well
+
+        # Yield context so that MIB Database callLater runs. This is a waiting
+        # Async task from when the OpenOMCIAgent was started. But also start the
+        # device so that it's queued async state machines can run as well
+        onu_device.start()
+        d = asleep(0.2)
+        d.addCallbacks(check_status, not_called)
+
+        return d
+
+    # TODO: Test pub/sub interface if possible
+    # TODO: Test custom/vendor-specific ME support
+    # TODO: Test override of various state machines or OMCI tasks if possible
+
+
+if __name__ == '__main__':
+    main()
+
diff --git a/test/unit/extensions/omci/test_openomci_agent.py b/test/unit/extensions/omci/test_openomci_agent.py
new file mode 100644
index 0000000..cef505c
--- /dev/null
+++ b/test/unit/extensions/omci/test_openomci_agent.py
@@ -0,0 +1,91 @@
+#
+# Copyright 2018 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from unittest import TestCase, main
+from nose.tools import assert_raises
+from copy import deepcopy
+from mock.mock_adapter_agent import MockAdapterAgent, MockCore
+from pyvoltha.adapters.extensions.omci.openomci_agent import OpenOMCIAgent, OpenOmciAgentDefaults
+from pyvoltha.adapters.extensions.omci.database.mib_db_ext import MibDbExternal
+from pyvoltha.adapters.extensions.omci.database.mib_db_dict import MibDbVolatileDict
+from pyvoltha.adapters.extensions.omci.state_machines.mib_sync import MibSynchronizer
+from pyvoltha.adapters.extensions.omci.tasks.mib_upload import MibUploadTask
+from pyvoltha.adapters.extensions.omci.tasks.get_mds_task import GetMdsTask
+from pyvoltha.adapters.extensions.omci.tasks.mib_resync_task import MibResyncTask
+from pyvoltha.adapters.extensions.omci.tasks.mib_reconcile_task import MibReconcileTask
+
+
+class TestOpenOmciAgent(TestCase):
+    """
+    Test the Open OMCI Agent
+    """
+    def setUp(self):
+        self.adapter_agent = MockAdapterAgent()
+
+    def tearDown(self):
+        if self.adapter_agent is not None:
+            self.adapter_agent.tearDown()
+
+    def test_omci_agent_defaults(self):
+        # Make sure someone does not check in bad default values
+
+        mib_sync = OpenOmciAgentDefaults.get('mib-synchronizer')
+
+        self.assertIsNotNone(mib_sync)
+        self.assertTrue(isinstance(mib_sync['state-machine'], type(MibSynchronizer)))
+        self.assertTrue(isinstance(mib_sync['database'], type(MibDbExternal)))
+
+        mib_sync_tasks = mib_sync.get('tasks')
+
+        self.assertIsNotNone(mib_sync_tasks)
+        self.assertTrue(isinstance(mib_sync_tasks['mib-upload'], type(MibUploadTask)))
+        self.assertTrue(isinstance(mib_sync_tasks['get-mds'], type(GetMdsTask)))
+        self.assertTrue(isinstance(mib_sync_tasks['mib-audit'], type(GetMdsTask)))
+        self.assertTrue(isinstance(mib_sync_tasks['mib-resync'], type(MibResyncTask)))
+        self.assertTrue(isinstance(mib_sync_tasks['mib-reconcile'], type(MibReconcileTask)))
+
+        # caps = OpenOmciAgentDefaults.get('onu-capabilities')
+        #
+        # self.assertIsNotNone(caps)
+
+    def test_omci_agent_default_init(self):
+        agent = OpenOMCIAgent(MockCore)
+
+        self.assertTrue(isinstance(agent.core, type(MockCore)))
+        self.assertTrue(isinstance(agent.database_class, type(MibDbExternal)))
+        self.assertEqual(len(agent.device_ids()), 0)
+        assert_raises(KeyError, agent.get_device, 'deadbeef')
+
+    def test_omci_agent_custom_mib_database(self):
+        custom = deepcopy(OpenOmciAgentDefaults)
+        custom['mib-synchronizer']['database'] = MibDbVolatileDict
+        agent = OpenOMCIAgent(MockCore, support_classes=custom)
+
+        self.assertTrue(isinstance(agent.core, type(MockCore)))
+        self.assertTrue(isinstance(agent.database_class, type(MibDbVolatileDict)))
+
+    def test_omci_agent_start_stop(self):
+        agent = OpenOMCIAgent(MockCore)
+
+        agent.start()
+        agent.start()       # Should be a NOP, no side effects
+
+        agent.stop()
+        agent.stop()        # Should be a NOP, no side effects
+
+
+if __name__ == '__main__':
+    main()
+
diff --git a/test/unit/extensions/omci/test_task_runner.py b/test/unit/extensions/omci/test_task_runner.py
new file mode 100644
index 0000000..e35e151
--- /dev/null
+++ b/test/unit/extensions/omci/test_task_runner.py
@@ -0,0 +1,484 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from unittest import TestCase, main
+from nose.tools import raises
+from twisted.internet import defer
+from twisted.internet.defer import inlineCallbacks, returnValue, CancelledError
+from mock.mock_task import SimpleTask
+from nose.twistedtools import deferred
+from pyvoltha.adapters.extensions.omci.tasks.task_runner import TaskRunner
+
+DEVICE_ID = 'omci-unit-tests'
+
+
+class TestTaskRunner(TestCase):
+    """
+    Test the Task Runner Object
+    """
+
+    def setUp(self):
+        # defer.setDebugging(True)
+        self.runner = TaskRunner(DEVICE_ID)
+
+    def tearDown(self):
+        r, self.runner = self.runner, None
+        r.stop()
+
+    def test_default_init(self):
+        self.assertFalse(self.runner.active)
+        self.assertEqual(self.runner.pending_tasks, 0)
+        self.assertEqual(self.runner.running_tasks, 0)
+        self.assertEqual(self.runner.successful_tasks_completed, 0)
+        self.assertEqual(self.runner.failed_tasks, 0)
+
+    def test_start_stop(self):
+        self.assertFalse(self.runner.active)
+
+        self.runner.start()
+        self.assertTrue(self.runner.active)
+
+        self.runner.stop()
+        self.assertFalse(self.runner.active)
+
+    def unexpected_error(self, _failure):
+        self.assertEqual('Should not be here, expected success', _failure)
+
+    def unexpected_success(self, _results):
+        self.assertEqual('Should not be here, expected a failure', _results)
+
+    def test_simple_task_init(self):
+        t = SimpleTask(None, DEVICE_ID,
+                       exclusive=True, priority=0,
+                       success=True, value=0, delay=0)
+
+        self.assertEqual(t.priority, 0)
+        self.assertGreater(t.task_id, 0)
+        self.assertTrue(t.exclusive)
+        self.assertFalse(t.deferred.called)
+
+    def test_task_defaults_and_bound(self):
+        # Make sure no one has changed some declared defaults/max/min values
+        from pyvoltha.adapters.extensions.omci.tasks.task import Task
+        self.assertEqual(128, Task.DEFAULT_PRIORITY)
+        self.assertEqual(0, Task.MIN_PRIORITY)
+        self.assertEqual(255, Task.MAX_PRIORITY)
+        self.assertEqual(10, Task.DEFAULT_WATCHDOG_SECS)
+        self.assertEqual(3, Task.MIN_WATCHDOG_SECS)
+        self.assertEqual(60, Task.MAX_WATCHDOG_SECS)
+
+    @raises(AssertionError)
+    def test_task_priority_min(self):
+        from pyvoltha.adapters.extensions.omci.tasks.task import Task
+        _ = SimpleTask(None, DEVICE_ID, priority=Task.MIN_PRIORITY - 1)
+
+    @raises(AssertionError)
+    def test_task_priority_max(self):
+        from pyvoltha.adapters.extensions.omci.tasks.task import Task
+        _ = SimpleTask(None, DEVICE_ID, priority=Task.MAX_PRIORITY + 1)
+
+    @raises(AssertionError)
+    def test_task_watchdog_min(self):
+        from pyvoltha.adapters.extensions.omci.tasks.task import Task
+        _ = SimpleTask(None, DEVICE_ID, watchdog_timeout=Task.MIN_WATCHDOG_SECS - 0.000001)
+
+    @raises(AssertionError)
+    def test_task_watchdog_max(self):
+        from pyvoltha.adapters.extensions.omci.tasks.task import Task
+        _ = SimpleTask(None, DEVICE_ID, watchdog_timeout=Task.MAX_WATCHDOG_SECS + 0.000001)
+
+    @deferred(timeout=5)
+    def test_simple_success(self):
+        expected_result = 123
+
+        t = SimpleTask(None, DEVICE_ID,
+                       exclusive=True, priority=0,
+                       success=True, value=expected_result, delay=0)
+
+        d = self.runner.queue_task(t)
+        self.assertEqual(self.runner.pending_tasks, 1)
+        self.assertEqual(self.runner.running_tasks, 0)
+        self.runner.start()
+
+        def check_results(results):
+            self.assertEqual(results, expected_result)
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 1)
+            self.assertEqual(self.runner.failed_tasks, 0)
+            self.assertTrue(self.runner.active)
+            return results
+
+        d.addCallbacks(check_results, self.unexpected_error)
+        return d
+
+    @raises(Exception)
+    @deferred(timeout=5)
+    def test_simple_failure(self):
+        self.expected_failure = Exception('Testing a task failure')
+
+        t = SimpleTask(None, DEVICE_ID,
+                       exclusive=True, priority=0,
+                       success=False, value=self.expected_failure,
+                       delay=0)
+
+        d = self.runner.queue_task(t)
+        self.assertEqual(self.runner.pending_tasks, 1)
+        self.assertEqual(self.runner.running_tasks, 0)
+        self.runner.start()
+
+        def expected_failure(failure):
+            self.assertEqual(failure, self.expected_failure)
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 0)
+            self.assertEqual(self.runner.failed_tasks, 1)
+            self.assertTrue(self.runner.active)
+            return failure
+
+        d.addCallbacks(self.unexpected_success, expected_failure)
+        return d
+
+    @deferred(timeout=5)
+    def test_priority(self):
+        self.last_value_set = 0
+
+        t1 = SimpleTask(None, DEVICE_ID,
+                        exclusive=True, priority=1,
+                        success=True, value=1, delay=0)
+
+        t2 = SimpleTask(None, DEVICE_ID,
+                        exclusive=True, priority=2,     # Should finish first
+                        success=True, value=2, delay=0)
+
+        d1 = self.runner.queue_task(t1)
+        d2 = self.runner.queue_task(t2)
+
+        def set_last_value(results):
+            self.last_value_set = results
+
+        d1.addCallbacks(set_last_value, self.unexpected_error)
+        d2.addCallbacks(set_last_value, self.unexpected_error)
+
+        self.assertEqual(self.runner.pending_tasks, 2)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        d = defer.gatherResults([d1, d2], consumeErrors=True)
+
+        def check_results(_):
+            self.assertEqual(self.last_value_set, 1)
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 2)
+
+        d.addCallbacks(check_results, self.unexpected_error)
+
+        self.runner.start()
+        return d
+
+    @inlineCallbacks
+    def check_that_t1_t2_running_and_last_is_not(self, results):
+        from pyvoltha.common.utils.asleep import asleep
+        yield asleep(0.1)
+
+        self.assertEqual(self.runner.pending_tasks, 1)
+        self.assertEqual(self.runner.running_tasks, 2)
+        self.assertEqual(self.runner.successful_tasks_completed, 1)
+
+        returnValue(results)
+
+    @deferred(timeout=10)
+    def test_concurrent(self):
+        blocker = SimpleTask(None, DEVICE_ID,
+                             exclusive=True, priority=10,
+                             success=True, value=1, delay=0.5)
+
+        t1 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=2)
+
+        t2 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=2)
+
+        last = SimpleTask(None, DEVICE_ID,
+                          exclusive=True, priority=8,
+                          success=True, value=1, delay=0)
+
+        d0 = self.runner.queue_task(blocker)
+        d0.addCallbacks(self.check_that_t1_t2_running_and_last_is_not,
+                        self.unexpected_error)
+
+        d1 = self.runner.queue_task(t1)
+        d2 = self.runner.queue_task(t2)
+        d3 = self.runner.queue_task(last)
+
+        self.assertEqual(self.runner.pending_tasks, 4)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        d = defer.gatherResults([d0, d1, d2, d3], consumeErrors=True)
+
+        def check_final_results(_):
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 4)
+            self.assertEqual(self.runner.failed_tasks, 0)
+
+        d.addCallbacks(check_final_results, self.unexpected_error)
+
+        self.runner.start()
+        return d
+
+    @raises(CancelledError)
+    @deferred(timeout=2)
+    def test_cancel_queued(self):
+        t = SimpleTask(None, DEVICE_ID,
+                       exclusive=True, priority=9,
+                       success=True, value=1, delay=0)
+
+        d = self.runner.queue_task(t)
+        self.assertEqual(self.runner.pending_tasks, 1)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        self.runner.cancel_task(t.task_id)
+        self.assertEqual(self.runner.pending_tasks, 0)
+        self.assertEqual(self.runner.running_tasks, 0)
+        return d
+
+    @raises(CancelledError)
+    @deferred(timeout=2)
+    def test_task_stop_queued(self):
+        t = SimpleTask(None, DEVICE_ID,
+                       exclusive=True, priority=9,
+                       success=True, value=1, delay=0)
+
+        d = self.runner.queue_task(t)
+        self.assertEqual(self.runner.pending_tasks, 1)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        t.stop()
+        self.assertEqual(self.runner.pending_tasks, 0)
+        self.assertEqual(self.runner.running_tasks, 0)
+        return d
+
+    def test_task_stop_not_queued(self):
+        t = SimpleTask(None, DEVICE_ID,
+                       exclusive=True, priority=9,
+                       success=True, value=1, delay=0)
+
+        self.assertEqual(self.runner.pending_tasks, 0)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        t.stop()
+        self.assertFalse(t.running)
+
+    @deferred(timeout=3)
+    def test_task_runner_cancel_running(self):
+        # Both task run in parallel but t1 will finish first and
+        # will request t2 to terminate by calling the TaskRunner's
+        # cancel task method
+        t1 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=0.5)
+        t2 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=200)
+
+        d1 = self.runner.queue_task(t1)
+        d2 = self.runner.queue_task(t2)
+
+        self.assertEqual(self.runner.pending_tasks, 2)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        def kill_task_t2(_, task_2_id):
+            # Called on successful completion of task t1
+            self.assertIsInstance(task_2_id, int)
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 1)
+
+            # Cancel task runner and t2 task ID
+            self.runner.cancel_task(task_2_id)
+            self.assertEqual(self.runner.running_tasks, 0)
+
+        d1.addCallbacks(kill_task_t2, self.unexpected_error,
+                        callbackArgs=[t2.task_id])
+
+        def expected_error(failure):
+            self.assertTrue(isinstance(failure.value, CancelledError))
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 1)
+            self.assertEqual(self.runner.failed_tasks, 1)
+
+        # T2 should not finish successfully, should get a cancel error
+        d2.addCallbacks(self.unexpected_success, expected_error)
+
+        # Run it
+        self.runner.start()
+        return defer.gatherResults([d1, d2], consumeErrors=True)
+
+    @deferred(timeout=3)
+    def test_task_stop_running(self):
+        # Run two tasks where T1 completes first and requests T2 to be
+        # canceled by calling T2's stop method
+
+        t1 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=0.5)
+        t2 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=200)
+
+        d1 = self.runner.queue_task(t1)
+        d2 = self.runner.queue_task(t2)
+
+        self.assertEqual(self.runner.pending_tasks, 2)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        def kill_task_t2(_, task_2):
+            # Called on successful completion of task t1
+            self.assertIsInstance(task_2, SimpleTask)
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 1)
+
+            # Cancel by telling the task to stop itself
+            task_2.stop()
+            self.assertEqual(self.runner.running_tasks, 0)
+
+        d1.addCallbacks(kill_task_t2, self.unexpected_error,
+                        callbackArgs=[t2])
+
+        def expected_error(failure):
+            self.assertTrue(isinstance(failure.value, CancelledError))
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 1)
+            self.assertEqual(self.runner.failed_tasks, 1)
+
+        # T2 should not finish successfully, should get a cancel error
+        d2.addCallbacks(self.unexpected_success, expected_error)
+
+        # Run it
+        self.runner.start()
+        return defer.gatherResults([d1, d2], consumeErrors=True)
+
+    @deferred(timeout=3)
+    def test_task_cancel_not_queued(self):
+        t = SimpleTask(None, DEVICE_ID,
+                       exclusive=True, priority=9,
+                       success=True, value=1, delay=0)
+
+        self.assertEqual(self.runner.pending_tasks, 0)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        def expected_error(failure):
+            self.assertTrue(isinstance(failure.value, CancelledError))
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 0)
+            self.assertEqual(self.runner.failed_tasks, 0)
+            # self.fail(msg='made it here')    # Uncomment to verify called
+
+        t.deferred.addCallbacks(self.unexpected_success, expected_error)
+
+        self.runner.start()
+        t.deferred.cancel()
+        self.assertFalse(t.running)
+        return t.deferred
+
+    @deferred(timeout=3)
+    def test_task_deferred_cancel_running(self):
+        # Run two tasks where T1 completes first and requests T2 to be
+        # canceled by doing a 'cancel' on T2's deferred
+
+        t1 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=0.5)
+        t2 = SimpleTask(None, DEVICE_ID,
+                        exclusive=False, priority=9,
+                        success=True, value=1, delay=200)
+
+        d1 = self.runner.queue_task(t1)
+        d2 = self.runner.queue_task(t2)
+
+        self.assertEqual(self.runner.pending_tasks, 2)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        def kill_task_t2(_, deferred_2):
+            # Called on successful completion of task t1
+            self.assertIsInstance(deferred_2, defer.Deferred)
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 1)
+
+            # Cancel the deferred for T2
+            deferred_2.cancel()
+            self.assertEqual(self.runner.running_tasks, 0)
+
+        d1.addCallbacks(kill_task_t2, self.unexpected_error,
+                        callbackArgs=[t2.deferred])
+
+        def expected_error(failure):
+            self.assertTrue(isinstance(failure.value, CancelledError))
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 1)
+            self.assertEqual(self.runner.failed_tasks, 1)
+            # self.fail(msg='made it here')    # Uncomment to verify called
+
+        # T2 should not finish successfully, should get a cancel error
+        d2.addCallbacks(self.unexpected_success, expected_error)
+
+        # Run it
+        self.runner.start()
+        return defer.gatherResults([d1, d2], consumeErrors=True)
+
+    @deferred(timeout=3)
+    def test_watchdog_timeout(self):
+        t = SimpleTask(None, DEVICE_ID, delay=2)
+
+        self.assertEqual(self.runner.pending_tasks, 0)
+        self.assertEqual(self.runner.running_tasks, 0)
+        self.assertEqual(self.runner.watchdog_timeouts, 0)
+
+        # Actual watchdog minimum is probably to long for an automated test, reach
+        # around and force ti to something smaller (kids, don't try this at home)
+
+        t._watchdog_timeout = 0.1
+        self.runner.queue_task(t)
+
+        self.assertEqual(self.runner.pending_tasks, 1)
+        self.assertEqual(self.runner.running_tasks, 0)
+
+        def expected_error(failure):
+            from pyvoltha.adapters.extensions.omci.tasks.task import WatchdogTimeoutFailure
+            self.assertTrue(isinstance(failure.value, WatchdogTimeoutFailure))
+            self.assertEqual(self.runner.pending_tasks, 0)
+            self.assertEqual(self.runner.running_tasks, 0)
+            self.assertEqual(self.runner.successful_tasks_completed, 0)
+            self.assertEqual(self.runner.failed_tasks, 1)
+            self.assertEqual(self.runner.watchdog_timeouts, 1)
+            self.assertEqual(self.runner.last_watchdog_failure_task, t.name)
+            # self.fail(msg='made it here')    # Uncomment to verify called
+
+        t.deferred.addCallbacks(self.unexpected_success, expected_error)
+
+        # Run it
+        self.runner.start()
+        return t.deferred
+
+
+if __name__ == '__main__':
+    main()