installers/charm/prometheus/tests/test_charm.py

   1 #!/usr/bin/env python3
   2 # Copyright 2020 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
  27 from ops.testing import Harness
  28
  29 from charm import PrometheusCharm
  30
  31
  32 class TestCharm(unittest.TestCase):
  33     """Prometheus 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(PrometheusCharm)
  39         self.harness.set_leader(is_leader=True)
  40         self.harness.begin()
  41         self.config = {
  42             "web-subpath": "/",
  43             "default-target": "",
  44             "max_file_size": 0,
  45             "ingress_whitelist_source_range": "",
  46             "tls_secret_name": "",
  47             "site_url": "https://prometheus.192.168.100.100.xip.io",
  48             "enable_web_admin_api": False,
  49         }
  50         self.harness.update_config(self.config)
  51
  52     def test_config_changed(
  53         self,
  54     ) -> NoReturn:
  55         """Test ingress resources without HTTP."""
  56
  57         self.harness.charm.on.config_changed.emit()
  58
  59         # Assertions
  60         self.assertIsInstance(self.harness.charm.unit.status, ActiveStatus)
  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_publish_prometheus_info(
  73         self,
  74     ) -> NoReturn:
  75         """Test to see if prometheus relation is updated."""
  76         expected_result = {
  77             "hostname": "prometheus",
  78             "port": "9090",
  79         }
  80
  81         relation_id = self.harness.add_relation("prometheus", "mon")
  82         self.harness.add_relation_unit(relation_id, "mon/0")
  83         relation_data = self.harness.get_relation_data(relation_id, "prometheus")
  84
  85         self.assertDictEqual(expected_result, relation_data)
  86
  87     def test_publish_prometheus_info_non_leader(
  88         self,
  89     ) -> NoReturn:
  90         """Test to see if prometheus relation is updated."""
  91         expected_result = {}
  92
  93         self.harness.set_leader(is_leader=False)
  94         relation_id = self.harness.add_relation("prometheus", "mon")
  95         self.harness.add_relation_unit(relation_id, "mon/0")
  96         relation_data = self.harness.get_relation_data(relation_id, "prometheus")
  97
  98         self.assertDictEqual(expected_result, relation_data)
  99
 100
 101 if __name__ == "__main__":
 102     unittest.main()