diff --git a/installers/charm/lcm/tests/test_charm.py b/installers/charm/lcm/tests/test_charm.py
index a7133e3..25e2cd6 100644
--- a/installers/charm/lcm/tests/test_charm.py
+++ b/installers/charm/lcm/tests/test_charm.py
@@ -134,7 +134,7 @@
         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", {"host": "ro", "port": 9090}
+            ro_relation_id, "ro/0", {"host": "ro", "port": 9090}
         )
 
         # Checking if kafka data is stored
@@ -155,35 +155,6 @@
 
         self.assertDictEqual(expected_result, pod_spec)
 
-    def test_on_kafka_relation_app_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", {"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_kafka_relation_unit_changed(self) -> NoReturn:
         """Test to see if kafka relation is updated."""
         self.harness.charm.on.start.emit()
@@ -213,33 +184,6 @@
         self.assertIn("ro", self.harness.charm.unit.status.message)
         self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
 
-    def test_on_mongodb_app_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", {"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_mongodb_unit_relation_changed(self) -> NoReturn:
         """Test to see if mongodb relation is updated."""
         self.harness.charm.on.start.emit()
@@ -267,35 +211,6 @@
         self.assertIn("ro", self.harness.charm.unit.status.message)
         self.assertTrue(self.harness.charm.unit.status.message.endswith(" relations"))
 
-    def test_on_ro_app_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", {"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"))
-
     def test_on_ro_unit_relation_changed(self) -> NoReturn:
         """Test to see if RO relation is updated."""
         self.harness.charm.on.start.emit()
diff --git a/installers/charm/lcm/tests/test_pod_spec.py b/installers/charm/lcm/tests/test_pod_spec.py
index 4c6b0cb..c74fb10 100644
--- a/installers/charm/lcm/tests/test_pod_spec.py
+++ b/installers/charm/lcm/tests/test_pod_spec.py
@@ -20,7 +20,6 @@
 # osm-charmers@lists.launchpad.net
 ##
 
-from pydantic import ValidationError
 from typing import NoReturn
 import unittest
 
@@ -396,7 +395,7 @@
         app_name = "lcm"
         port = 9999
 
-        with self.assertRaises(ValidationError):
+        with self.assertRaises(ValueError):
             pod_spec.make_pod_spec(image_info, config, relation_state, app_name, port)
 
     def test_make_pod_spec_without_relation_state(self) -> NoReturn:
@@ -419,7 +418,7 @@
         app_name = "lcm"
         port = 9999
 
-        with self.assertRaises(ValidationError):
+        with self.assertRaises(ValueError):
             pod_spec.make_pod_spec(image_info, config, relation_state, app_name, port)