--- /dev/null
+#!/usr/bin/env python3
+# 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.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: legal@canonical.com
+#
+# To get in touch with the maintainers, please contact:
+# osm-charmers@lists.launchpad.net
+##
+
+from typing import NoReturn
+import unittest
+from ops.model import BlockedStatus
+
+from ops.testing import Harness
+
+from charm import PolCharm
+
+
+class TestCharm(unittest.TestCase):
+ """POL Charm unit tests."""
+
+ def setUp(self) -> NoReturn:
+ """Test setup"""
+ self.harness = Harness(PolCharm)
+ 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.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": "pol",
+ "imageDetails": self.harness.charm.image.fetch(),
+ "imagePullPolicy": "Always",
+ "ports": [
+ {
+ "name": "pol",
+ "containerPort": 80,
+ "protocol": "TCP",
+ }
+ ],
+ "envConfig": {
+ "ALLOW_ANONYMOUS_LOGIN": "yes",
+ "OSMPOL_GLOBAL_LOGLEVEL": "INFO",
+ "OSMPOL_MESSAGE_HOST": "kafka",
+ "OSMPOL_MESSAGE_DRIVER": "kafka",
+ "OSMPOL_MESSAGE_PORT": 9092,
+ "OSMPOL_DATABASE_DRIVER": "mongo",
+ "OSMPOL_DATABASE_URI": "mongodb://mongo:27017",
+ },
+ }
+ ],
+ "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)
+
+ # 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"},
+ )
+
+ # 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")
+
+ # 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_app_relation_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.assertTrue(self.harness.charm.unit.status.message.endswith(" relation"))
+
+ def test_on_kafka_unit_relation_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.assertTrue(self.harness.charm.unit.status.message.endswith(" relation"))
+
+ 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.assertTrue(self.harness.charm.unit.status.message.endswith(" relation"))
+
+ 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.assertTrue(self.harness.charm.unit.status.message.endswith(" relation"))
+
+
+if __name__ == "__main__":
+ unittest.main()