diff --git a/lib/xos-synchronizer/xos-synchronizer-tests/test_load.py b/lib/xos-synchronizer/xos-synchronizer-tests/test_load.py
new file mode 100644
index 0000000..e2bbbb0
--- /dev/null
+++ b/lib/xos-synchronizer/xos-synchronizer-tests/test_load.py
@@ -0,0 +1,119 @@
+# 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.
+
+import unittest
+from mock import patch
+import mock
+import pdb
+import networkx as nx
+
+import os
+import sys
+
+test_path = os.path.abspath(os.path.dirname(os.path.realpath(__file__)))
+sync_lib_dir = os.path.join(test_path, "..", "xossynchronizer")
+xos_dir = os.path.join(test_path, "..", "..", "..", "xos")
+
+class TestScheduling(unittest.TestCase):
+    def setUp(self):
+        self.sys_path_save = sys.path
+        self.cwd_save = os.getcwd()
+
+        config = os.path.join(test_path, "test_config.yaml")
+        from xosconfig import Config
+
+        Config.clear()
+        Config.init(config, "synchronizer-config-schema.yaml")
+
+        from xossynchronizer.mock_modelaccessor_build import (
+            build_mock_modelaccessor,
+        )
+
+        build_mock_modelaccessor(sync_lib_dir, xos_dir, services_dir=None, service_xprotos=[])
+
+        # The test config.yaml references files in `xos-synchronizer-tests/` so make sure we're in the parent
+        # directory of the test directory.
+        os.chdir(os.path.join(test_path, ".."))
+
+        import xossynchronizer.event_loop
+        reload(xossynchronizer.event_loop)
+
+        import xossynchronizer.backend
+        reload(xossynchronizer.backend)
+
+        from xossynchronizer.modelaccessor import model_accessor
+
+        b = xossynchronizer.backend.Backend(model_accessor=model_accessor)
+        steps_dir = Config.get("steps_dir")
+        self.steps = b.load_sync_step_modules(steps_dir)
+        self.synchronizer = xossynchronizer.event_loop.XOSObserver(self.steps, model_accessor)
+
+    def tearDown(self):
+        sys.path = self.sys_path_save
+        os.chdir(self.cwd_save)
+
+    def test_load_steps(self):
+        step_names = [s.__name__ for s in self.steps]
+        self.assertIn("SyncControllerSlices", step_names)
+
+    def test_load_deps(self):
+        self.synchronizer.load_dependency_graph()
+        graph = self.synchronizer.model_dependency_graph
+        self.assertTrue(graph[False].has_edge("Instance", "Slice"))
+        self.assertTrue(graph[True].has_edge("Slice", "Instance"))
+        self.assertTrue(graph[False].has_edge("Slice", "ControllerSlice"))
+        self.assertTrue(graph[True].has_edge("ControllerSlice", "Slice"))
+
+    def test_load_dep_accessors(self):
+        self.synchronizer.load_dependency_graph()
+        graph = self.synchronizer.model_dependency_graph
+        self.assertDictContainsSubset(
+            {"src_accessor": "controllerslices"},
+            graph[False]["Slice"]["ControllerSlice"],
+        )
+        self.assertDictContainsSubset(
+            {"src_accessor": "slice", "dst_accessor": "controllerslices"},
+            graph[True]["Slice"]["ControllerSlice"],
+        )
+
+    def test_load_sync_steps(self):
+        self.synchronizer.load_sync_steps()
+        model_to_step = self.synchronizer.model_to_step
+        step_lookup = self.synchronizer.step_lookup
+        self.assertIn(
+            ("ControllerSlice", ["SyncControllerSlices"]), model_to_step.items()
+        )
+        self.assertIn(
+            ("Port", ["SyncPort"]), model_to_step.items()
+        )
+        self.assertIn(("SiteRole", ["SyncRoles"]), model_to_step.items())
+
+        for k, v in model_to_step.items():
+            val = v[0]
+            observes = step_lookup[val].observes
+            if not isinstance(observes, list):
+                observes = [observes]
+
+            observed_names = []
+            for o in observes:
+                if isinstance(o,str):
+                    observed_names.append(o)
+                else:
+                    observed_names.append(o.__name__)
+
+            self.assertIn(k, observed_names)
+
+
+if __name__ == "__main__":
+    unittest.main()