CharmHub and new kafka and zookeeper charms
[osm/devops.git] / installers / charm / lcm / tests / test_charm.py
index 25e2cd6..aa11a74 100644 (file)
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright 2020 Canonical Ltd.
+# Copyright 2021 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
 # osm-charmers@lists.launchpad.net
 ##
 
+import sys
 from typing import NoReturn
 import unittest
-from ops.model import BlockedStatus
-
-from ops.testing import Harness
 
 from charm import LcmCharm
+import mock
+from ops.model import ActiveStatus, BlockedStatus
+from ops.testing import Harness
 
 
 class TestCharm(unittest.TestCase):
@@ -34,212 +35,428 @@ class TestCharm(unittest.TestCase):
 
     def setUp(self) -> NoReturn:
         """Test setup"""
+        self.image_info = sys.modules["oci_image"].OCIImageResource().fetch()
         self.harness = Harness(LcmCharm)
         self.harness.set_leader(is_leader=True)
         self.harness.begin()
-
-    def test_on_start_without_relations(self) -> NoReturn:
-        """Test installation without any relation."""
-        self.harness.charm.on.start.emit()
-
-        # Verifying status
-        self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
-
-        # Verifying status message
-        self.assertGreater(len(self.harness.charm.unit.status.message), 0)
-        self.assertTrue(
-            self.harness.charm.unit.status.message.startswith("Waiting for ")
-        )
-        self.assertIn("kafka", self.harness.charm.unit.status.message)
-        self.assertIn("mongodb", self.harness.charm.unit.status.message)
-        self.assertIn("ro", self.harness.charm.unit.status.message)
-        self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
-
-    def test_on_start_with_relations(self) -> NoReturn:
-        """Test deployment without keystone."""
-        expected_result = {
-            "version": 3,
-            "containers": [
-                {
-                    "name": "lcm",
-                    "imageDetails": self.harness.charm.image.fetch(),
-                    "imagePullPolicy": "Always",
-                    "ports": [
-                        {
-                            "name": "lcm",
-                            "containerPort": 9999,
-                            "protocol": "TCP",
-                        }
-                    ],
-                    "envConfig": {
-                        "ALLOW_ANONYMOUS_LOGIN": "yes",
-                        "OSMLCM_GLOBAL_LOGLEVEL": "INFO",
-                        "OSMLCM_RO_HOST": "ro",
-                        "OSMLCM_RO_PORT": 9090,
-                        "OSMLCM_RO_TENANT": "osm",
-                        "OSMLCM_MESSAGE_DRIVER": "kafka",
-                        "OSMLCM_MESSAGE_HOST": "kafka",
-                        "OSMLCM_MESSAGE_PORT": 9092,
-                        "OSMLCM_DATABASE_DRIVER": "mongo",
-                        "OSMLCM_DATABASE_URI": "mongodb://mongo:27017",
-                        "OSMLCM_DATABASE_COMMONKEY": "osm",
-                        "OSMLCM_STORAGE_DRIVER": "mongo",
-                        "OSMLCM_STORAGE_PATH": "/app/storage",
-                        "OSMLCM_STORAGE_COLLECTION": "files",
-                        "OSMLCM_STORAGE_URI": "mongodb://mongo:27017",
-                        "OSMLCM_VCA_HOST": "admin",
-                        "OSMLCM_VCA_PORT": 17070,
-                        "OSMLCM_VCA_USER": "admin",
-                        "OSMLCM_VCA_PUBKEY": "secret",
-                        "OSMLCM_VCA_SECRET": "secret",
-                        "OSMLCM_VCA_CACERT": "",
-                        "OSMLCM_VCA_CLOUD": "localhost",
-                        "OSMLCM_VCA_K8S_CLOUD": "k8scloud",
-                    },
-                }
-            ],
-            "kubernetesResources": {"ingressResources": []},
+        self.config = {
+            "vca_host": "192.168.0.13",
+            "vca_port": 17070,
+            "vca_user": "admin",
+            "vca_secret": "admin",
+            "vca_pubkey": "key",
+            "vca_cacert": "cacert",
+            "vca_cloud": "cloud",
+            "vca_k8s_cloud": "k8scloud",
+            "database_commonkey": "commonkey",
+            "mongodb_uri": "",
+            "log_level": "INFO",
         }
+        self.harness.update_config(self.config)
 
-        self.harness.charm.on.start.emit()
-
-        # Check if kafka datastore is initialized
-        self.assertIsNone(self.harness.charm.state.message_host)
-        self.assertIsNone(self.harness.charm.state.message_port)
-
-        # Check if mongodb datastore is initialized
-        self.assertIsNone(self.harness.charm.state.database_uri)
-
-        # Check if RO datastore is initialized
-        self.assertIsNone(self.harness.charm.state.ro_host)
-        self.assertIsNone(self.harness.charm.state.ro_port)
+    def test_config_changed_no_relations(
+        self,
+    ) -> NoReturn:
+        """Test ingress resources without HTTP."""
 
-        # Initializing the kafka relation
-        kafka_relation_id = self.harness.add_relation("kafka", "kafka")
-        self.harness.add_relation_unit(kafka_relation_id, "kafka/0")
-        self.harness.update_relation_data(
-            kafka_relation_id, "kafka/0", {"host": "kafka", "port": 9092}
-        )
+        self.harness.charm.on.config_changed.emit()
 
-        # Initializing the mongo relation
-        mongodb_relation_id = self.harness.add_relation("mongodb", "mongodb")
-        self.harness.add_relation_unit(mongodb_relation_id, "mongodb/0")
-        self.harness.update_relation_data(
-            mongodb_relation_id,
-            "mongodb/0",
-            {"connection_string": "mongodb://mongo:27017"},
-        )
-
-        # Initializing the RO relation
-        ro_relation_id = self.harness.add_relation("ro", "ro")
-        self.harness.add_relation_unit(ro_relation_id, "ro/0")
-        self.harness.update_relation_data(
-            ro_relation_id, "ro/0", {"host": "ro", "port": 9090}
+        # Assertions
+        self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
+        self.assertTrue(
+            all(
+                relation in self.harness.charm.unit.status.message
+                for relation in ["mongodb", "kafka", "ro"]
+            )
         )
 
-        # Checking if kafka data is stored
-        self.assertEqual(self.harness.charm.state.message_host, "kafka")
-        self.assertEqual(self.harness.charm.state.message_port, 9092)
-
-        # Checking if mongodb data is stored
-        self.assertEqual(self.harness.charm.state.database_uri, "mongodb://mongo:27017")
-
-        # Checking if RO data is stored
-        self.assertEqual(self.harness.charm.state.ro_host, "ro")
-        self.assertEqual(self.harness.charm.state.ro_port, 9090)
-
+    def test_config_changed_non_leader(
+        self,
+    ) -> NoReturn:
+        """Test ingress resources without HTTP."""
+        self.harness.set_leader(is_leader=False)
+        self.harness.charm.on.config_changed.emit()
+
+        # Assertions
+        self.assertIsInstance(self.harness.charm.unit.status, ActiveStatus)
+
+    def test_with_relations_and_mongodb_config(
+        self,
+    ) -> NoReturn:
+        "Test with relations and mongodb config"
+        self.initialize_kafka_relation()
+        self.initialize_mongo_config()
+        self.initialize_ro_relation()
         # Verifying status
         self.assertNotIsInstance(self.harness.charm.unit.status, BlockedStatus)
 
-        pod_spec, _ = self.harness.get_pod_spec()
-
-        self.assertDictEqual(expected_result, pod_spec)
-
-    def test_on_kafka_relation_unit_changed(self) -> NoReturn:
-        """Test to see if kafka relation is updated."""
-        self.harness.charm.on.start.emit()
-
-        self.assertIsNone(self.harness.charm.state.message_host)
-        self.assertIsNone(self.harness.charm.state.message_port)
-
-        relation_id = self.harness.add_relation("kafka", "kafka")
-        self.harness.add_relation_unit(relation_id, "kafka/0")
-        self.harness.update_relation_data(
-            relation_id, "kafka/0", {"host": "kafka", "port": 9092}
-        )
-
-        self.assertEqual(self.harness.charm.state.message_host, "kafka")
-        self.assertEqual(self.harness.charm.state.message_port, 9092)
+    def test_with_relations(
+        self,
+    ) -> NoReturn:
+        "Test with relations (internal)"
+        self.initialize_kafka_relation()
+        self.initialize_mongo_relation()
+        self.initialize_ro_relation()
+        # Verifying status
+        self.assertNotIsInstance(self.harness.charm.unit.status, BlockedStatus)
 
+    def test_exception_mongodb_relation_and_config(
+        self,
+    ) -> NoReturn:
+        "Test with all relations and config for mongodb. Must fail"
+        self.initialize_mongo_relation()
+        self.initialize_mongo_config()
         # Verifying status
         self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
 
-        # Verifying status message
-        self.assertGreater(len(self.harness.charm.unit.status.message), 0)
-        self.assertTrue(
-            self.harness.charm.unit.status.message.startswith("Waiting for ")
+    # def test_build_pod_spec(
+    #     self,
+    # ) -> NoReturn:
+    #     expected_config = {
+    #         "OSMLCM_GLOBAL_LOGLEVEL": self.config["log_level"],
+    #         "OSMLCM_DATABASE_COMMONKEY": self.config["database_commonkey"],
+    #     }
+    #     expected_config.update(
+    #         {
+    #             f"OSMLCM_{k.upper()}": v
+    #             for k, v in self.config.items()
+    #             if k.startswith("vca_")
+    #         }
+    #     )
+    #     self.harness.charm._check_missing_dependencies = mock.Mock()
+    #     pod_spec = self.harness.charm.build_pod_spec(
+    #         {"imageDetails": {"imagePath": "lcm-image"}}
+    #     )
+    #     actual_config = pod_spec["containers"][0]["envConfig"]
+
+    #     self.assertDictContainsSubset(
+    #         expected_config,
+    #         actual_config,
+    #     )
+    #     for config_key in actual_config:
+    #         self.assertNotIn("VCA_MODEL_CONFIG", config_key)
+
+    def test_build_pod_spec_with_model_config(
+        self,
+    ) -> NoReturn:
+        self.harness.update_config(
+            {
+                "vca_model_config_agent_metadata_url": "string",
+                "vca_model_config_agent_stream": "string",
+                "vca_model_config_apt_ftp_proxy": "string",
+                "vca_model_config_apt_http_proxy": "string",
+                "vca_model_config_apt_https_proxy": "string",
+                "vca_model_config_apt_mirror": "string",
+                "vca_model_config_apt_no_proxy": "string",
+                "vca_model_config_automatically_retry_hooks": False,
+                "vca_model_config_backup_dir": "string",
+                "vca_model_config_cloudinit_userdata": "string",
+                "vca_model_config_container_image_metadata_url": "string",
+                "vca_model_config_container_image_stream": "string",
+                "vca_model_config_container_inherit_properties": "string",
+                "vca_model_config_container_networking_method": "string",
+                "vca_model_config_default_series": "string",
+                "vca_model_config_default_space": "string",
+                "vca_model_config_development": False,
+                "vca_model_config_disable_network_management": False,
+                "vca_model_config_egress_subnets": "string",
+                "vca_model_config_enable_os_refresh_update": False,
+                "vca_model_config_enable_os_upgrade": False,
+                "vca_model_config_fan_config": "string",
+                "vca_model_config_firewall_mode": "string",
+                "vca_model_config_ftp_proxy": "string",
+                "vca_model_config_http_proxy": "string",
+                "vca_model_config_https_proxy": "string",
+                "vca_model_config_ignore_machine_addresses": False,
+                "vca_model_config_image_metadata_url": "string",
+                "vca_model_config_image_stream": "string",
+                "vca_model_config_juju_ftp_proxy": "string",
+                "vca_model_config_juju_http_proxy": "string",
+                "vca_model_config_juju_https_proxy": "string",
+                "vca_model_config_juju_no_proxy": "string",
+                "vca_model_config_logforward_enabled": False,
+                "vca_model_config_logging_config": "string",
+                "vca_model_config_lxd_snap_channel": "string",
+                "vca_model_config_max_action_results_age": "string",
+                "vca_model_config_max_action_results_size": "string",
+                "vca_model_config_max_status_history_age": "string",
+                "vca_model_config_max_status_history_size": "string",
+                "vca_model_config_net_bond_reconfigure_delay": "string",
+                "vca_model_config_no_proxy": "string",
+                "vca_model_config_provisioner_harvest_mode": "string",
+                "vca_model_config_proxy_ssh": False,
+                "vca_model_config_snap_http_proxy": "string",
+                "vca_model_config_snap_https_proxy": "string",
+                "vca_model_config_snap_store_assertions": "string",
+                "vca_model_config_snap_store_proxy": "string",
+                "vca_model_config_snap_store_proxy_url": "string",
+                "vca_model_config_ssl_hostname_verification": False,
+                "vca_model_config_test_mode": False,
+                "vca_model_config_transmit_vendor_metrics": False,
+                "vca_model_config_update_status_hook_interval": "string",
+            }
         )
-        self.assertNotIn("kafka", self.harness.charm.unit.status.message)
-        self.assertIn("mongodb", self.harness.charm.unit.status.message)
-        self.assertIn("ro", self.harness.charm.unit.status.message)
-        self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
+        expected_config = {
+            f"OSMLCM_{k.upper()}": v
+            for k, v in self.config.items()
+            if k.startswith("vca_model_config_")
+        }
 
-    def test_on_mongodb_unit_relation_changed(self) -> NoReturn:
-        """Test to see if mongodb relation is updated."""
-        self.harness.charm.on.start.emit()
+        self.harness.charm._check_missing_dependencies = mock.Mock()
+        pod_spec = self.harness.charm.build_pod_spec(
+            {"imageDetails": {"imagePath": "lcm-image"}}
+        )
+        actual_config = pod_spec["containers"][0]["envConfig"]
 
-        self.assertIsNone(self.harness.charm.state.database_uri)
+        self.assertDictContainsSubset(
+            expected_config,
+            actual_config,
+        )
 
-        relation_id = self.harness.add_relation("mongodb", "mongodb")
-        self.harness.add_relation_unit(relation_id, "mongodb/0")
+    def initialize_kafka_relation(self):
+        kafka_relation_id = self.harness.add_relation("kafka", "kafka")
+        self.harness.add_relation_unit(kafka_relation_id, "kafka/0")
         self.harness.update_relation_data(
-            relation_id, "mongodb/0", {"connection_string": "mongodb://mongo:27017"}
+            kafka_relation_id, "kafka", {"host": "kafka", "port": 9092}
         )
 
-        self.assertEqual(self.harness.charm.state.database_uri, "mongodb://mongo:27017")
+    def initialize_mongo_config(self):
+        self.harness.update_config({"mongodb_uri": "mongodb://mongo:27017"})
 
-        # Verifying status
-        self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
-
-        # Verifying status message
-        self.assertGreater(len(self.harness.charm.unit.status.message), 0)
-        self.assertTrue(
-            self.harness.charm.unit.status.message.startswith("Waiting for ")
+    def initialize_mongo_relation(self):
+        mongodb_relation_id = self.harness.add_relation("mongodb", "mongodb")
+        self.harness.add_relation_unit(mongodb_relation_id, "mongodb/0")
+        self.harness.update_relation_data(
+            mongodb_relation_id,
+            "mongodb/0",
+            {"connection_string": "mongodb://mongo:27017"},
         )
-        self.assertIn("kafka", self.harness.charm.unit.status.message)
-        self.assertNotIn("mongodb", self.harness.charm.unit.status.message)
-        self.assertIn("ro", self.harness.charm.unit.status.message)
-        self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
-
-    def test_on_ro_unit_relation_changed(self) -> NoReturn:
-        """Test to see if RO relation is updated."""
-        self.harness.charm.on.start.emit()
-
-        self.assertIsNone(self.harness.charm.state.ro_host)
-        self.assertIsNone(self.harness.charm.state.ro_port)
 
-        relation_id = self.harness.add_relation("ro", "ro")
-        self.harness.add_relation_unit(relation_id, "ro/0")
+    def initialize_ro_relation(self):
+        http_relation_id = self.harness.add_relation("ro", "ro")
+        self.harness.add_relation_unit(http_relation_id, "ro")
         self.harness.update_relation_data(
-            relation_id, "ro/0", {"host": "ro", "port": 9090}
+            http_relation_id,
+            "ro",
+            {"host": "ro", "port": 9090},
         )
 
-        self.assertEqual(self.harness.charm.state.ro_host, "ro")
-        self.assertEqual(self.harness.charm.state.ro_port, 9090)
 
-        # Verifying status
-        self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
+if __name__ == "__main__":
+    unittest.main()
 
-        # Verifying status message
-        self.assertGreater(len(self.harness.charm.unit.status.message), 0)
-        self.assertTrue(
-            self.harness.charm.unit.status.message.startswith("Waiting for ")
-        )
-        self.assertIn("kafka", self.harness.charm.unit.status.message)
-        self.assertIn("mongodb", self.harness.charm.unit.status.message)
-        self.assertNotIn("ro", self.harness.charm.unit.status.message)
-        self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
+
+# class TestCharm(unittest.TestCase):
+#     """LCM Charm unit tests."""
+
+#     def setUp(self) -> NoReturn:
+#         """Test setup"""
+#         self.harness = Harness(LcmCharm)
+#         self.harness.set_leader(is_leader=True)
+#         self.harness.begin()
+
+#     def test_on_start_without_relations(self) -> NoReturn:
+#         """Test installation without any relation."""
+#         self.harness.charm.on.start.emit()
+
+#         # Verifying status
+#         self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
+
+#         # Verifying status message
+#         self.assertGreater(len(self.harness.charm.unit.status.message), 0)
+#         self.assertTrue(
+#             self.harness.charm.unit.status.message.startswith("Waiting for ")
+#         )
+#         self.assertIn("kafka", self.harness.charm.unit.status.message)
+#         self.assertIn("mongodb", self.harness.charm.unit.status.message)
+#         self.assertIn("ro", self.harness.charm.unit.status.message)
+#         self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
+
+#     def test_on_start_with_relations(self) -> NoReturn:
+#         """Test deployment without keystone."""
+#         expected_result = {
+#             "version": 3,
+#             "containers": [
+#                 {
+#                     "name": "lcm",
+#                     "imageDetails": self.harness.charm.image.fetch(),
+#                     "imagePullPolicy": "Always",
+#                     "ports": [
+#                         {
+#                             "name": "lcm",
+#                             "containerPort": 9999,
+#                             "protocol": "TCP",
+#                         }
+#                     ],
+#                     "envConfig": {
+#                         "ALLOW_ANONYMOUS_LOGIN": "yes",
+#                         "OSMLCM_GLOBAL_LOGLEVEL": "INFO",
+#                         "OSMLCM_RO_HOST": "ro",
+#                         "OSMLCM_RO_PORT": 9090,
+#                         "OSMLCM_RO_TENANT": "osm",
+#                         "OSMLCM_MESSAGE_DRIVER": "kafka",
+#                         "OSMLCM_MESSAGE_HOST": "kafka",
+#                         "OSMLCM_MESSAGE_PORT": 9092,
+#                         "OSMLCM_DATABASE_DRIVER": "mongo",
+#                         "OSMLCM_DATABASE_URI": "mongodb://mongo:27017",
+#                         "OSMLCM_DATABASE_COMMONKEY": "osm",
+#                         "OSMLCM_STORAGE_DRIVER": "mongo",
+#                         "OSMLCM_STORAGE_PATH": "/app/storage",
+#                         "OSMLCM_STORAGE_COLLECTION": "files",
+#                         "OSMLCM_STORAGE_URI": "mongodb://mongo:27017",
+#                         "OSMLCM_VCA_HOST": "admin",
+#                         "OSMLCM_VCA_PORT": 17070,
+#                         "OSMLCM_VCA_USER": "admin",
+#                         "OSMLCM_VCA_PUBKEY": "secret",
+#                         "OSMLCM_VCA_SECRET": "secret",
+#                         "OSMLCM_VCA_CACERT": "",
+#                         "OSMLCM_VCA_CLOUD": "localhost",
+#                         "OSMLCM_VCA_K8S_CLOUD": "k8scloud",
+#                     },
+#                 }
+#             ],
+#             "kubernetesResources": {"ingressResources": []},
+#         }
+
+#         self.harness.charm.on.start.emit()
+
+#         # Check if kafka datastore is initialized
+#         self.assertIsNone(self.harness.charm.state.message_host)
+#         self.assertIsNone(self.harness.charm.state.message_port)
+
+#         # Check if mongodb datastore is initialized
+#         self.assertIsNone(self.harness.charm.state.database_uri)
+
+#         # Check if RO datastore is initialized
+#         self.assertIsNone(self.harness.charm.state.ro_host)
+#         self.assertIsNone(self.harness.charm.state.ro_port)
+
+#         # Initializing the kafka relation
+#         kafka_relation_id = self.harness.add_relation("kafka", "kafka")
+#         self.harness.add_relation_unit(kafka_relation_id, "kafka/0")
+#         self.harness.update_relation_data(
+#             kafka_relation_id, "kafka/0", {"host": "kafka", "port": 9092}
+#         )
+
+#         # Initializing the mongo relation
+#         mongodb_relation_id = self.harness.add_relation("mongodb", "mongodb")
+#         self.harness.add_relation_unit(mongodb_relation_id, "mongodb/0")
+#         self.harness.update_relation_data(
+#             mongodb_relation_id,
+#             "mongodb/0",
+#             {"connection_string": "mongodb://mongo:27017"},
+#         )
+
+#         # Initializing the RO relation
+#         ro_relation_id = self.harness.add_relation("ro", "ro")
+#         self.harness.add_relation_unit(ro_relation_id, "ro/0")
+#         self.harness.update_relation_data(
+#             ro_relation_id, "ro/0", {"host": "ro", "port": 9090}
+#         )
+
+#         # Checking if kafka data is stored
+#         self.assertEqual(self.harness.charm.state.message_host, "kafka")
+#         self.assertEqual(self.harness.charm.state.message_port, 9092)
+
+#         # Checking if mongodb data is stored
+#         self.assertEqual(self.harness.charm.state.database_uri, "mongodb://mongo:27017")
+
+#         # Checking if RO data is stored
+#         self.assertEqual(self.harness.charm.state.ro_host, "ro")
+#         self.assertEqual(self.harness.charm.state.ro_port, 9090)
+
+#         # Verifying status
+#         self.assertNotIsInstance(self.harness.charm.unit.status, BlockedStatus)
+
+#         pod_spec, _ = self.harness.get_pod_spec()
+
+#         self.assertDictEqual(expected_result, pod_spec)
+
+#     def test_on_kafka_relation_unit_changed(self) -> NoReturn:
+#         """Test to see if kafka relation is updated."""
+#         self.harness.charm.on.start.emit()
+
+#         self.assertIsNone(self.harness.charm.state.message_host)
+#         self.assertIsNone(self.harness.charm.state.message_port)
+
+#         relation_id = self.harness.add_relation("kafka", "kafka")
+#         self.harness.add_relation_unit(relation_id, "kafka/0")
+#         self.harness.update_relation_data(
+#             relation_id, "kafka/0", {"host": "kafka", "port": 9092}
+#         )
+
+#         self.assertEqual(self.harness.charm.state.message_host, "kafka")
+#         self.assertEqual(self.harness.charm.state.message_port, 9092)
+
+#         # Verifying status
+#         self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
+
+#         # Verifying status message
+#         self.assertGreater(len(self.harness.charm.unit.status.message), 0)
+#         self.assertTrue(
+#             self.harness.charm.unit.status.message.startswith("Waiting for ")
+#         )
+#         self.assertNotIn("kafka", self.harness.charm.unit.status.message)
+#         self.assertIn("mongodb", self.harness.charm.unit.status.message)
+#         self.assertIn("ro", self.harness.charm.unit.status.message)
+#         self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
+
+#     def test_on_mongodb_unit_relation_changed(self) -> NoReturn:
+#         """Test to see if mongodb relation is updated."""
+#         self.harness.charm.on.start.emit()
+
+#         self.assertIsNone(self.harness.charm.state.database_uri)
+
+#         relation_id = self.harness.add_relation("mongodb", "mongodb")
+#         self.harness.add_relation_unit(relation_id, "mongodb/0")
+#         self.harness.update_relation_data(
+#             relation_id, "mongodb/0", {"connection_string": "mongodb://mongo:27017"}
+#         )
+
+#         self.assertEqual(self.harness.charm.state.database_uri, "mongodb://mongo:27017")
+
+#         # Verifying status
+#         self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
+
+#         # Verifying status message
+#         self.assertGreater(len(self.harness.charm.unit.status.message), 0)
+#         self.assertTrue(
+#             self.harness.charm.unit.status.message.startswith("Waiting for ")
+#         )
+#         self.assertIn("kafka", self.harness.charm.unit.status.message)
+#         self.assertNotIn("mongodb", self.harness.charm.unit.status.message)
+#         self.assertIn("ro", self.harness.charm.unit.status.message)
+#         self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
+
+#     def test_on_ro_unit_relation_changed(self) -> NoReturn:
+#         """Test to see if RO relation is updated."""
+#         self.harness.charm.on.start.emit()
+
+#         self.assertIsNone(self.harness.charm.state.ro_host)
+#         self.assertIsNone(self.harness.charm.state.ro_port)
+
+#         relation_id = self.harness.add_relation("ro", "ro")
+#         self.harness.add_relation_unit(relation_id, "ro/0")
+#         self.harness.update_relation_data(
+#             relation_id, "ro/0", {"host": "ro", "port": 9090}
+#         )
+
+#         self.assertEqual(self.harness.charm.state.ro_host, "ro")
+#         self.assertEqual(self.harness.charm.state.ro_port, 9090)
+
+#         # Verifying status
+#         self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
+
+#         # Verifying status message
+#         self.assertGreater(len(self.harness.charm.unit.status.message), 0)
+#         self.assertTrue(
+#             self.harness.charm.unit.status.message.startswith("Waiting for ")
+#         )
+#         self.assertIn("kafka", self.harness.charm.unit.status.message)
+#         self.assertIn("mongodb", self.harness.charm.unit.status.message)
+#         self.assertNotIn("ro", self.harness.charm.unit.status.message)
+#         self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
 
 
-if __name__ == "__main__":
-    unittest.main()
+if __name__ == "__main__":
+    unittest.main()