diff --git a/xos/synchronizer/tests/test_sync_trustdomain.py b/xos/synchronizer/tests/test_sync_trustdomain.py
new file mode 100644
index 0000000..b9f8a74
--- /dev/null
+++ b/xos/synchronizer/tests/test_sync_trustdomain.py
@@ -0,0 +1,104 @@
+
+# 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 json
+import os
+import sys
+import unittest
+from mock import patch, PropertyMock, ANY, MagicMock
+from unit_test_common import setup_sync_unit_test
+
+def fake_connect_openstack_admin(self, service, required_version=None):
+    return MagicMock()
+
+class TestSyncTrustDomain(unittest.TestCase):
+
+    def setUp(self):
+        self.unittest_setup = setup_sync_unit_test(os.path.abspath(os.path.dirname(os.path.realpath(__file__))),
+                                                   globals(),
+                                                   [("openstack", "openstack.xproto")] )
+
+        sys.path.append(os.path.join(os.path.abspath(os.path.dirname(os.path.realpath(__file__))), "../steps"))
+
+        from sync_trustdomain import SyncTrustDomain
+        self.step_class = SyncTrustDomain
+
+        self.service = OpenStackService()
+
+    def tearDown(self):
+        sys.path = self.unittest_setup["sys_path_save"]
+
+    def test_sync_record_create_noexist(self):
+        fakeconn = MagicMock()
+        with patch.object(self.step_class, "connect_openstack_admin") as fake_connect_openstack_admin:
+            fake_connect_openstack_admin.return_value = fakeconn
+
+            xos_trust_domain = TrustDomain(name="test-trust", owner=self.service)
+
+            step = self.step_class()
+            fakeconn.identity.find_domain.return_value = None
+
+            os_domain = MagicMock()
+            os_domain.id = "1234"
+            fakeconn.identity.create_domain.return_value = os_domain
+
+            step.sync_record(xos_trust_domain)
+
+            fakeconn.identity.create_domain.assert_called_with(name=xos_trust_domain.name)
+            self.assertEqual(xos_trust_domain.backend_handle, "1234")
+
+    def test_sync_record_create_exists(self):
+        fakeconn = MagicMock()
+        with patch.object(self.step_class, "connect_openstack_admin") as fake_connect_openstack_admin:
+            fake_connect_openstack_admin.return_value = fakeconn
+
+            xos_trust_domain = TrustDomain(name="test-trust", owner=self.service)
+
+            step = self.step_class()
+            os_domain = MagicMock()
+            os_domain.id = "1234"
+            fakeconn.identity.find_domain.return_value = os_domain
+
+            fakeconn.identity.create_domain.return_value = None
+
+            step.sync_record(xos_trust_domain)
+
+            fakeconn.identity.create_domain.assert_not_called()
+            self.assertEqual(xos_trust_domain.backend_handle, "1234")
+
+    def test_delete_record(self):
+        fakeconn = MagicMock()
+        with patch.object(self.step_class, "connect_openstack_admin") as fake_connect_openstack_admin:
+            fake_connect_openstack_admin.return_value = fakeconn
+
+            xos_trust_domain = TrustDomain(name="test-trust", owner=self.service)
+
+            step = self.step_class()
+            os_domain = MagicMock()
+            os_domain.id = "1234"
+            os_domain.enabled = True
+            fakeconn.identity.find_domain.return_value = os_domain
+            os_domain2 = MagicMock()
+            os_domain2.id = "1234"
+            os_domain2.enabled = False
+            fakeconn.identity.update_domain.return_value = os_domain2
+            fakeconn.identity.delete_domain.return_value = None
+
+            step.delete_record(xos_trust_domain)
+            fakeconn.identity.update_domain.assert_called_with("1234", enabled=False)
+            fakeconn.identity.delete_domain.assert_called_with("1234")
+
+if __name__ == '__main__':
+    unittest.main()