installers/charm/pla/tests/test_charm.py

   1 #!/usr/bin/env python3
   2 # Copyright 2021 Canonical Ltd.
   3 #
   4 # Licensed under the Apache License, Version 2.0 (the "License"); you may
   5 # not use this file except in compliance with the License. You may obtain
   6 # a copy of the License at
   7 #
   8 #         http://www.apache.org/licenses/LICENSE-2.0
   9 #
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  12 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  13 # License for the specific language governing permissions and limitations
  14 # under the License.
  15 #
  16 # For those usages not covered by the Apache License, Version 2.0 please
  17 # contact: legal@canonical.com
  18 #
  19 # To get in touch with the maintainers, please contact:
  20 # osm-charmers@lists.launchpad.net
  21 ##
  22
  23 import sys
  24 from typing import NoReturn
  25 import unittest
  26 from ops.model import ActiveStatus, BlockedStatus
  27 from ops.testing import Harness
  28
  29 from charm import PlaCharm
  30
  31
  32 class TestCharm(unittest.TestCase):
  33     """Pla Charm unit tests."""
  34
  35     def setUp(self) -> NoReturn:
  36         """Test setup"""
  37         self.image_info = sys.modules["oci_image"].OCIImageResource().fetch()
  38         self.harness = Harness(PlaCharm)
  39         self.harness.set_leader(is_leader=True)
  40         self.harness.begin()
  41         self.config = {
  42             "log_level": "INFO",
  43         }
  44         self.harness.update_config(self.config)
  45
  46     def test_config_changed_no_relations(
  47         self,
  48     ) -> NoReturn:
  49         """Test ingress resources without HTTP."""
  50
  51         self.harness.charm.on.config_changed.emit()
  52
  53         # Assertions
  54         self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
  55         self.assertTrue(
  56             all(
  57                 relation in self.harness.charm.unit.status.message
  58                 for relation in ["mongodb", "kafka"]
  59             )
  60         )
  61
  62     def test_config_changed_non_leader(
  63         self,
  64     ) -> NoReturn:
  65         """Test ingress resources without HTTP."""
  66         self.harness.set_leader(is_leader=False)
  67         self.harness.charm.on.config_changed.emit()
  68
  69         # Assertions
  70         self.assertIsInstance(self.harness.charm.unit.status, ActiveStatus)
  71
  72     def test_with_relations(
  73         self,
  74     ) -> NoReturn:
  75         "Test with relations (internal)"
  76         self.initialize_kafka_relation()
  77         self.initialize_mongo_relation()
  78         # Verifying status
  79         self.assertNotIsInstance(self.harness.charm.unit.status, BlockedStatus)
  80
  81     def initialize_kafka_relation(self):
  82         kafka_relation_id = self.harness.add_relation("kafka", "kafka")
  83         self.harness.add_relation_unit(kafka_relation_id, "kafka/0")
  84         self.harness.update_relation_data(
  85             kafka_relation_id, "kafka/0", {"host": "kafka", "port": 9092}
  86         )
  87
  88     def initialize_mongo_relation(self):
  89         mongodb_relation_id = self.harness.add_relation("mongodb", "mongodb")
  90         self.harness.add_relation_unit(mongodb_relation_id, "mongodb/0")
  91         self.harness.update_relation_data(
  92             mongodb_relation_id,
  93             "mongodb/0",
  94             {"connection_string": "mongodb://mongo:27017"},
  95         )
  96
  97
  98 if __name__ == "__main__":
  99     unittest.main()