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 _set_grafana_config(harness: Harness):
  46     harness.update_config(
  47         {
  48             "grafana-url": "http://prometheus:1234",
  49             "grafana-user": "user",
  50             "grafana-password": "password",
  51         }
  52     )
  53
  54
  55 def test_default_grafana_config_is_invalid_charm_is_blocked(harness: Harness):
  56     harness.charm.on.config_changed.emit()
  57     assert type(harness.charm.unit.status) == BlockedStatus
  58     assert (
  59         "need grafana-url, grafana-user, grafana-password config"
  60         == harness.charm.unit.status.message
  61     )
  62
  63
  64 def test_missing_relations(harness: Harness):
  65     _set_grafana_config(harness)
  66     harness.charm.on.config_changed.emit()
  67     assert type(harness.charm.unit.status) == BlockedStatus
  68     assert all(
  69         relation in harness.charm.unit.status.message
  70         for relation in ["mongodb", "kafka", "prometheus", "keystone"]
  71     )
  72
  73
  74 def test_grafana_url_without_schema_block_status(harness: Harness):
  75     harness.update_config(
  76         {"grafana-url": "foo.com", "grafana-user": "user", "grafana-password": "password"}
  77     )
  78     assert type(harness.charm.unit.status) == BlockedStatus
  79     assert "Invalid value for grafana-url config: 'foo.com'" == harness.charm.unit.status.message
  80
  81
  82 def test_grafana_url_with_port_without_schema_block_status(harness: Harness):
  83     harness.update_config(
  84         {"grafana-url": "foo.com:9090", "grafana-user": "user", "grafana-password": "password"}
  85     )
  86     assert type(harness.charm.unit.status) == BlockedStatus
  87     assert (
  88         "Invalid value for grafana-url config: 'foo.com:9090'" == harness.charm.unit.status.message
  89     )
  90
  91
  92 def test_grafana_url_without_port_is_valid(harness: Harness):
  93     _add_relations(harness)
  94     harness.update_config(
  95         {"grafana-url": "http://foo", "grafana-user": "user", "grafana-password": "password"}
  96     )
  97     assert harness.charm.unit.status == ActiveStatus()
  98
  99
 100 def test_grafana_url_with_port_is_valid(harness: Harness):
 101     _add_relations(harness)
 102     harness.update_config(
 103         {"grafana-url": "http://foo:90", "grafana-user": "user", "grafana-password": "password"}
 104     )
 105     assert harness.charm.unit.status == ActiveStatus()
 106
 107
 108 def test_ready(harness: Harness):
 109     _set_grafana_config(harness)
 110     _add_relations(harness)
 111     assert harness.charm.unit.status == ActiveStatus()
 112
 113
 114 def test_container_stops_after_relation_broken(harness: Harness):
 115     _set_grafana_config(harness)
 116     harness.charm.on[container_name].pebble_ready.emit(container_name)
 117     container = harness.charm.unit.get_container(container_name)
 118     relation_ids = _add_relations(harness)
 119     check_service_active(container, service_name)
 120     harness.remove_relation(relation_ids[0])
 121     with pytest.raises(CharmError):
 122         check_service_active(container, service_name)
 123
 124
 125 def _add_relations(harness: Harness):
 126     relation_ids = []
 127     # Add mongo relation
 128     relation_id = harness.add_relation("mongodb", "mongodb")
 129     harness.add_relation_unit(relation_id, "mongodb/0")
 130     harness.update_relation_data(
 131         relation_id,
 132         "mongodb",
 133         {"uris": "mongodb://:1234", "username": "user", "password": "password"},
 134     )
 135     relation_ids.append(relation_id)
 136     # Add kafka relation
 137     relation_id = harness.add_relation("kafka", "kafka")
 138     harness.add_relation_unit(relation_id, "kafka/0")
 139     harness.update_relation_data(relation_id, "kafka", {"host": "kafka", "port": "9092"})
 140     relation_ids.append(relation_id)
 141     # Add prometheus relation
 142     relation_id = harness.add_relation("prometheus", "prometheus")
 143     harness.add_relation_unit(relation_id, "prometheus/0")
 144     harness.update_relation_data(
 145         relation_id, "prometheus", {"hostname": "prometheus", "port": "9090"}
 146     )
 147     relation_ids.append(relation_id)
 148     # Add keystone relation
 149     relation_id = harness.add_relation("keystone", "keystone")
 150     harness.add_relation_unit(relation_id, "keystone/0")
 151     harness.update_relation_data(
 152         relation_id,
 153         "keystone",
 154         {
 155             "host": "host",
 156             "port": "port",
 157             "user_domain_name": "user_domain_name",
 158             "project_domain_name": "project_domain_name",
 159             "username": "username",
 160             "password": "password",
 161             "service": "service",
 162             "keystone_db_password": "keystone_db_password",
 163             "region_id": "region_id",
 164             "admin_username": "admin_username",
 165             "admin_password": "admin_password",
 166             "admin_project_name": "admin_project_name",
 167         },
 168     )
 169     relation_ids.append(relation_id)
 170     return relation_ids