diff --git a/lib/xos-synchronizer/tests/steps/sync_controller_slices.py b/lib/xos-synchronizer/tests/steps/sync_controller_slices.py
new file mode 100644
index 0000000..0f43bad
--- /dev/null
+++ b/lib/xos-synchronizer/tests/steps/sync_controller_slices.py
@@ -0,0 +1,46 @@
+# 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 os
+import base64
+from xossynchronizer.steps.syncstep import SyncStep, DeferredException
+from xossynchronizer.mock_modelaccessor import *
+
+class SyncControllerSlices(SyncStep):
+    provides = [Slice]
+    requested_interval = 0
+    observes = ControllerSlice
+    playbook = "sync_controller_slices.yaml"
+
+    def map_sync_inputs(self, controller_slice):
+        if getattr(controller_slice, "force_fail", None):
+            raise Exception("Forced failure")
+        elif getattr(controller_slice, "force_defer", None):
+            raise DeferredException("Forced defer")
+
+        tenant_fields = {"endpoint": "endpoint", "name": "Flagrant Haircut"}
+
+        return tenant_fields
+
+    def map_sync_outputs(self, controller_slice, res):
+        controller_slice.save()
+
+    def map_delete_inputs(self, controller_slice):
+        tenant_fields = {
+            "endpoint": "endpoint",
+            "name": "Conscientious Plastic",
+            "delete": True,
+        }
+        return tenant_fields