installers/charm/osm-mon/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, OsmMonCharm, check_service_active
  30
  31 container_name = "mon"
  32 service_name = "mon"
  33
  34
  35 @pytest.fixture
  36 def harness(mocker: MockerFixture):
  37     mocker.patch("charm.KubernetesServicePatch", lambda x, y: None)
  38     harness = Harness(OsmMonCharm)
  39     harness.begin()
  40     harness.container_pebble_ready(container_name)
  41     yield harness
  42     harness.cleanup()
  43
  44
  45 def test_missing_relations(harness: Harness):
  46     harness.charm.on.config_changed.emit()
  47     assert type(harness.charm.unit.status) == BlockedStatus
  48     assert all(
  49         relation in harness.charm.unit.status.message
  50         for relation in ["mongodb", "kafka", "prometheus", "keystone"]
  51     )
  52
  53
  54 def test_ready(harness: Harness):
  55     _add_relations(harness)
  56     assert harness.charm.unit.status == ActiveStatus()
  57
  58
  59 def test_container_stops_after_relation_broken(harness: Harness):
  60     harness.charm.on[container_name].pebble_ready.emit(container_name)
  61     container = harness.charm.unit.get_container(container_name)
  62     relation_ids = _add_relations(harness)
  63     check_service_active(container, service_name)
  64     harness.remove_relation(relation_ids[0])
  65     with pytest.raises(CharmError):
  66         check_service_active(container, service_name)
  67
  68
  69 def _add_relations(harness: Harness):
  70     relation_ids = []
  71     # Add mongo relation
  72     relation_id = harness.add_relation("mongodb", "mongodb")
  73     harness.add_relation_unit(relation_id, "mongodb/0")
  74     harness.update_relation_data(
  75         relation_id, "mongodb/0", {"connection_string": "mongodb://:1234"}
  76     )
  77     relation_ids.append(relation_id)
  78     # Add kafka relation
  79     relation_id = harness.add_relation("kafka", "kafka")
  80     harness.add_relation_unit(relation_id, "kafka/0")
  81     harness.update_relation_data(relation_id, "kafka", {"host": "kafka", "port": "9092"})
  82     relation_ids.append(relation_id)
  83     # Add prometheus relation
  84     relation_id = harness.add_relation("prometheus", "prometheus")
  85     harness.add_relation_unit(relation_id, "prometheus/0")
  86     harness.update_relation_data(
  87         relation_id, "prometheus", {"hostname": "prometheus", "port": "9090"}
  88     )
  89     relation_ids.append(relation_id)
  90     # Add keystone relation
  91     relation_id = harness.add_relation("keystone", "keystone")
  92     harness.add_relation_unit(relation_id, "keystone/0")
  93     harness.update_relation_data(
  94         relation_id,
  95         "keystone",
  96         {
  97             "host": "host",
  98             "port": "port",
  99             "user_domain_name": "user_domain_name",
 100             "project_domain_name": "project_domain_name",
 101             "username": "username",
 102             "password": "password",
 103             "service": "service",
 104             "keystone_db_password": "keystone_db_password",
 105             "region_id": "region_id",
 106             "admin_username": "admin_username",
 107             "admin_password": "admin_password",
 108             "admin_project_name": "admin_project_name",
 109         },
 110     )
 111     relation_ids.append(relation_id)
 112     return relation_ids