CORD-3049 Unit Tests for SimpleExampleService model policy

Change-Id: Id670827f4141edf4513e2355fec838fa5092de34
diff --git a/xos/synchronizer/tests/test_model_policy_exampleserviceinstance.py b/xos/synchronizer/tests/test_model_policy_exampleserviceinstance.py
new file mode 100644
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+++ b/xos/synchronizer/tests/test_model_policy_exampleserviceinstance.py
@@ -0,0 +1,224 @@
+
+# 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.
+
+# Tests for SimpleExampleServiceInstance model policies
+
+import base64
+import json
+import os
+import sys
+import unittest
+from mock import patch, PropertyMock, ANY, MagicMock
+from unit_test_common import setup_sync_unit_test
+
+
+class TestSimpleExampleServiceInstancePolicy(unittest.TestCase):
+
+    def setUp(self):
+        self.unittest_setup = setup_sync_unit_test(os.path.abspath(os.path.dirname(os.path.realpath(__file__))),
+                                                   globals(),
+                                                   [("simpleexampleservice", "simpleexampleservice.xproto"),
+                                                    ("kubernetes-service", "kubernetes.xproto")] )
+
+        self.MockObjectList = self.unittest_setup["MockObjectList"]
+
+        sys.path.append(os.path.join(os.path.abspath(os.path.dirname(os.path.realpath(__file__))), "../model_policies"))
+
+        from model_policy_simpleexampleserviceinstance import SimpleExampleServiceInstancePolicy
+        self.policy_class = SimpleExampleServiceInstancePolicy
+
+        self.service = SimpleExampleService(service_message="hello", service_secret="p@ssw0rd")
+        self.k8s_service = KubernetesService(id=1111)
+        self.k8s_service.get_service_instance_class=MagicMock(return_value=KubernetesServiceInstance)
+        self.trust_domain = TrustDomain(owner=self.k8s_service, name="test-trust")
+        self.image = Image(name="test-image", tag="1.2", kind="container")
+        self.slice = Slice(trust_domain=self.trust_domain, service=self.service, default_image = self.image)
+        self.service.slices = self.MockObjectList([self.slice])
+
+    def tearDown(self):
+        sys.path = self.unittest_setup["sys_path_save"]
+
+    def test_policy_create(self):
+        with patch.object(KubernetesService.objects, "get_items") as k8s_service_objects, \
+                patch.object(Service.objects, "get_items") as service_objects, \
+                patch.object(KubernetesServiceInstance, "save", autospec=True) as ksi_save, \
+                patch.object(KubernetesConfigMap, "save", autospec=True) as kcfm_save, \
+                patch.object(KubernetesConfigVolumeMount, "save", autospec=True) as kcfm_mnt_save, \
+                patch.object(KubernetesSecret, "save", autospec=True) as ksec_save, \
+                patch.object(KubernetesSecretVolumeMount, "save", autospec=True) as ksec_mnt_save:
+            k8s_service_objects.return_value = [self.k8s_service]
+            service_objects.return_value = [self.k8s_service, self.service]
+
+            si = SimpleExampleServiceInstance(name="test-simple-instance",
+                                              id=1112,
+                                              owner=self.service, tenant_message="world", tenant_secret="l3tm31n")
+            si.embedded_images = self.MockObjectList([])
+
+            step = self.policy_class()
+
+            desired_data = json.dumps({"index.html": step.render_index(si)})
+
+            desired_secret_data = json.dumps({"service_secret.txt": base64.b64encode("p@ssw0rd"),
+                                              "tenant_secret.txt": base64.b64encode("l3tm31n")})
+
+            step.handle_create(si)
+
+            # Saved twice, once with no_sync=True and once with no_sync=False
+            self.assertEqual(ksi_save.call_count, 2)
+            saved_ksi = ksi_save.call_args[0][0]
+            self.assertEqual(saved_ksi.slice, self.slice)
+            self.assertEqual(saved_ksi.owner, self.k8s_service)
+            self.assertEqual(saved_ksi.image, self.image)
+            self.assertEqual(saved_ksi.name, "simpleexampleserviceinstance-1112")
+
+            # Config Map
+            self.assertEqual(kcfm_save.call_count, 1)
+            saved_cfm = kcfm_save.call_args[0][0]
+            self.assertEqual(saved_cfm.name, "simpleexampleserviceinstance-map-1112")
+            self.assertEqual(saved_cfm.trust_domain, self.trust_domain)
+            self.assertEqual(saved_cfm.data, desired_data)
+
+            # Mouhnt of Config Map to Service Instance
+            self.assertEqual(kcfm_mnt_save.call_count, 1)
+            saved_cfm_mnt = kcfm_mnt_save.call_args[0][0]
+            self.assertEqual(saved_cfm_mnt.config, saved_cfm)
+            self.assertEqual(saved_cfm_mnt.service_instance, saved_ksi)
+
+            # Secret
+            self.assertEqual(ksec_save.call_count, 1)
+            saved_sec = ksec_save.call_args[0][0]
+            self.assertEqual(saved_sec.name, "simpleexampleserviceinstance-secret-1112")
+            self.assertEqual(saved_sec.trust_domain, self.trust_domain)
+            self.assertEqual(saved_sec.data, desired_secret_data)
+
+            # Mount of Secret to Service Instance
+            self.assertEqual(ksec_mnt_save.call_count, 1)
+            saved_sec_mnt = ksec_mnt_save.call_args[0][0]
+            self.assertEqual(saved_sec_mnt.secret, saved_sec)
+            self.assertEqual(saved_sec_mnt.service_instance, saved_ksi)
+
+    def test_policy_update(self):
+        with patch.object(KubernetesService.objects, "get_items") as k8s_service_objects, \
+                patch.object(Service.objects, "get_items") as service_objects, \
+                patch.object(KubernetesServiceInstance, "save", autospec=True) as ksi_save, \
+                patch.object(KubernetesConfigMap, "save", autospec=True) as kcfm_save, \
+                patch.object(KubernetesConfigVolumeMount, "save", autospec=True) as kcfm_mnt_save, \
+                patch.object(KubernetesSecret, "save", autospec=True) as ksec_save, \
+                patch.object(KubernetesSecretVolumeMount, "save", autospec=True) as ksec_mnt_save:
+            k8s_service_objects.return_value = [self.k8s_service]
+            service_objects.return_value = [self.k8s_service, self.service]
+
+            si = SimpleExampleServiceInstance(name="test-simple-instance",
+                                              id=1112,
+                                              owner=self.service, tenant_message="world", tenant_secret="l3tm31n")
+            si.embedded_images = self.MockObjectList([])
+
+            ksi = KubernetesServiceInstance(owner=self.k8s_service, slice=self.slice, image=self.image,
+                                            name="simpleexampleserviceinstance-1112")
+
+            cfm = KubernetesConfigMap(trust_domain=self.trust_domain, name="simpleexampleserviceinstance-map-1112",
+                                      data="junk")
+
+            cfm_mnt = KubernetesConfigVolumeMount(config=cfm, service_instance=ksi)
+
+            si.compute_instance = ksi
+            ksi.kubernetes_config_volume_mounts = self.MockObjectList([cfm_mnt])
+
+            step = self.policy_class()
+
+            desired_data = json.dumps({"index.html": step.render_index(si)})
+
+            step.handle_update(si)
+
+            self.assertEqual(ksi_save.call_count, 1)
+
+            # Config Map
+            self.assertEqual(kcfm_save.call_count, 1)
+            saved_cfm = kcfm_save.call_args[0][0]
+            self.assertEqual(saved_cfm.name, "simpleexampleserviceinstance-map-1112")
+            self.assertEqual(saved_cfm.trust_domain, self.trust_domain)
+            self.assertEqual(saved_cfm.data, desired_data)
+
+            self.assertEqual(kcfm_mnt_save.call_count, 0)
+            self.assertEqual(ksec_save.call_count, 0)
+            self.assertEqual(ksec_mnt_save.call_count, 0)
+
+    def test_policy_update_no_difference(self):
+        with patch.object(KubernetesService.objects, "get_items") as k8s_service_objects, \
+                patch.object(Service.objects, "get_items") as service_objects, \
+                patch.object(KubernetesServiceInstance, "save", autospec=True) as ksi_save, \
+                patch.object(KubernetesConfigMap, "save", autospec=True) as kcfm_save, \
+                patch.object(KubernetesConfigVolumeMount, "save", autospec=True) as kcfm_mnt_save, \
+                patch.object(KubernetesSecret, "save", autospec=True) as ksec_save, \
+                patch.object(KubernetesSecretVolumeMount, "save", autospec=True) as ksec_mnt_save:
+            k8s_service_objects.return_value = [self.k8s_service]
+            service_objects.return_value = [self.k8s_service, self.service]
+
+            step = self.policy_class()
+
+            si = SimpleExampleServiceInstance(name="test-simple-instance",
+                                              id=1112,
+                                              owner=self.service, tenant_message="world", tenant_secret="l3tm31n")
+            si.embedded_images = self.MockObjectList([])
+
+            desired_data = json.dumps({"index.html": step.render_index(si)})
+
+            ksi = KubernetesServiceInstance(owner=self.k8s_service, slice=self.slice, image=self.image,
+                                            name="simpleexampleserviceinstance-1112")
+
+            cfm = KubernetesConfigMap(trust_domain=self.trust_domain, name="simpleexampleserviceinstance-map-1112",
+                                      data=desired_data)
+
+            cfm_mnt = KubernetesConfigVolumeMount(config=cfm, service_instance=ksi)
+
+            si.compute_instance = ksi
+            ksi.kubernetes_config_volume_mounts = self.MockObjectList([cfm_mnt])
+
+            step.handle_update(si)
+
+            self.assertEqual(ksi_save.call_count, 0)
+            self.assertEqual(kcfm_save.call_count, 0)
+            self.assertEqual(kcfm_mnt_save.call_count, 0)
+            self.assertEqual(ksec_save.call_count, 0)
+            self.assertEqual(ksec_mnt_save.call_count, 0)
+
+    def test_policy_delete(self):
+        with patch.object(KubernetesServiceInstance, "delete", autospec=True) as ksi_delete, \
+                patch.object(SimpleExampleServiceInstance, "save", autospec=True) as sesi_save:
+            si = SimpleExampleServiceInstance(name="test-simple-instance",
+                                              id=1112,
+                                              owner=self.service, tenant_message="world", tenant_secret="l3tm31n")
+
+            ksi = KubernetesServiceInstance(owner=self.k8s_service, slice=self.slice, image=self.image,
+                                            name="simpleexampleserviceinstance-1112")
+            si.compute_instance = ksi
+
+            step = self.policy_class()
+
+            step.handle_delete(si)
+
+            # The compute instance should have been deleted
+            self.assertEqual(ksi_delete.call_count, 1)
+            deleted_ksi = ksi_delete.call_args[0][0]
+            self.assertEqual(deleted_ksi, ksi)
+
+            # The serviceInstance should have had its compute_instance set to none
+            self.assertEqual(si.compute_instance.None)
+
+            # The SimpleExampleServiceInstance should have been saved
+            self.assertEqual(sesi_save.call_count, 1)
+
+if __name__ == '__main__':
+    unittest.main()