diff --git a/unit_tests/charm_tests/__init__.py b/unit_tests/charm_tests/__init__.py
new file mode 100644
index 0000000..6131624
--- /dev/null
+++ b/unit_tests/charm_tests/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2020 Canonical Ltd.
+#
+# 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/unit_tests/charm_tests/test_mysql.py b/unit_tests/charm_tests/test_mysql.py
new file mode 100644
index 0000000..3493ce9
--- /dev/null
+++ b/unit_tests/charm_tests/test_mysql.py
@@ -0,0 +1,32 @@
+# Copyright 2020 Canonical Ltd.
+#
+# 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 mock
+import unittest
+
+import zaza.openstack.charm_tests.mysql.utils as mysql_utils
+
+
+class TestMysqlUtils(unittest.TestCase):
+    """Test class to encapsulate testing Mysql test utils."""
+
+    @mock.patch.object(mysql_utils, 'model')
+    def test_mysql_complete_cluster_series_upgrade(self, mock_model):
+        run_action_on_leader = mock.MagicMock()
+        mock_model.run_action_on_leader = run_action_on_leader
+        mysql_utils.complete_cluster_series_upgrade()
+        run_action_on_leader.assert_called_once_with(
+            'mysql',
+            'complete-cluster-series-upgrade',
+            action_params={})
diff --git a/unit_tests/charm_tests/test_rabbitmq_server.py b/unit_tests/charm_tests/test_rabbitmq_server.py
new file mode 100644
index 0000000..8e6ae0d
--- /dev/null
+++ b/unit_tests/charm_tests/test_rabbitmq_server.py
@@ -0,0 +1,32 @@
+# Copyright 2020 Canonical Ltd.
+#
+# 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 mock
+import unittest
+
+import zaza.openstack.charm_tests.rabbitmq_server.utils as rabbit_utils
+
+
+class TestRabbitUtils(unittest.TestCase):
+    """Test class to encapsulate testing Mysql test utils."""
+
+    @mock.patch.object(rabbit_utils.zaza, 'model')
+    def test_rabbit_complete_cluster_series_upgrade(self, mock_model):
+        run_action_on_leader = mock.MagicMock()
+        mock_model.run_action_on_leader = run_action_on_leader
+        rabbit_utils.complete_cluster_series_upgrade()
+        run_action_on_leader.assert_called_once_with(
+            'rabbitmq-server',
+            'complete-cluster-series-upgrade',
+            action_params={})