installers/charm/osm-pol/tests/unit/test_charm.py

   1 #!/usr/bin/env python3
   2 # Copyright 2022 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 # Learn more about testing at: https://juju.is/docs/sdk/testing
  23
  24 import pytest
  25 from ops.model import ActiveStatus, BlockedStatus
  26 from ops.testing import Harness
  27 from pytest_mock import MockerFixture
  28
  29 from charm import CharmError, OsmPolCharm, check_service_active
  30
  31 container_name = "pol"
  32 service_name = "pol"
  33
  34
  35 @pytest.fixture
  36 def harness(mocker: MockerFixture):
  37     harness = Harness(OsmPolCharm)
  38     harness.begin()
  39     yield harness
  40     harness.cleanup()
  41
  42
  43 def test_missing_relations(harness: Harness):
  44     harness.charm.on.config_changed.emit()
  45     assert type(harness.charm.unit.status) == BlockedStatus
  46     assert all(
  47         relation in harness.charm.unit.status.message for relation in ["mongodb", "kafka", "mysql"]
  48     )
  49
  50
  51 def test_ready(harness: Harness):
  52     _add_relations(harness)
  53     assert harness.charm.unit.status == ActiveStatus()
  54
  55
  56 def test_container_stops_after_relation_broken(harness: Harness):
  57     harness.charm.on[container_name].pebble_ready.emit(container_name)
  58     container = harness.charm.unit.get_container(container_name)
  59     relation_ids = _add_relations(harness)
  60     check_service_active(container, service_name)
  61     harness.remove_relation(relation_ids[0])
  62     with pytest.raises(CharmError):
  63         check_service_active(container, service_name)
  64
  65
  66 def _add_relations(harness: Harness):
  67     relation_ids = []
  68     # Add mongo relation
  69     relation_id = harness.add_relation("mongodb", "mongodb")
  70     harness.add_relation_unit(relation_id, "mongodb/0")
  71     harness.update_relation_data(
  72         relation_id, "mongodb/0", {"connection_string": "mongodb://:1234"}
  73     )
  74     relation_ids.append(relation_id)
  75     # Add kafka relation
  76     relation_id = harness.add_relation("kafka", "kafka")
  77     harness.add_relation_unit(relation_id, "kafka/0")
  78     harness.update_relation_data(relation_id, "kafka", {"host": "kafka", "port": 9092})
  79     relation_ids.append(relation_id)
  80     # Add mysql relation
  81     relation_id = harness.add_relation("mysql", "mysql")
  82     harness.add_relation_unit(relation_id, "mysql/0")
  83     harness.update_relation_data(
  84         relation_id,
  85         "mysql/0",
  86         {
  87             "host": "mysql",
  88             "port": 3306,
  89             "user": "mano",
  90             "password": "manopw",
  91             "root_password": "rootmanopw",
  92         },
  93     )
  94     relation_ids.append(relation_id)
  95     return relation_ids