Enable zuul and git-review

- Add .zuul.yaml with jobs definition to run unit tests, pep8 and
  coverage jobs, yoga and zed are added because python 3.8 and 3.10 is
  desired.
- Add .gitreview file
- Fix unit tests, use Mock requests.get() when rendering the
  configuration.
- Format logging messages correctly

Change-Id: I78d9c632590d0601d93105ba3d13d987aa0e30d5

.gitreview

@@ -0,0 +1,4 @@
+[gerrit]
+host=review.opendev.org
+port=29418
+project=openstack/charm-keystone-openidc.git

.zuul.yaml

@@ -0,0 +1,5 @@
+- project:
+    templates:
+      - openstack-python3-charm-yoga-jobs
+      - openstack-python3-charm-zed-jobs
+      - openstack-cover-jobs

src/charm.py

@@ -60,8 +60,7 @@ def when_data_ready(func):
     def _wrapper(self, event):
         try:
             if not self.is_data_ready():
-                logger.debug('relation data is not ready yet (%s)',
-                             event)
+                logger.debug('relation data is not ready yet (%s)', event)
                 return
         except CharmConfigError as ex:
             self.unit.status = BlockedStatus(ex.msg)
@@ -259,7 +258,7 @@ class KeystoneOpenIDCCharm(ops_openstack.core.OSBaseCharm):
 
     def _on_keystone_fid_service_provider_relation_changed(self, event):
         if not self.is_data_ready():
-            logger.debug('relation data is not ready yet: %s', event)
+            logger.debug('relation data is not ready yet (%s)', event)
             return
         self.update_principal_data()
         self.update_config_if_needed()
@@ -290,8 +289,7 @@ class KeystoneOpenIDCCharm(ops_openstack.core.OSBaseCharm):
 
     def _on_config_changed(self, event):
         if not self.is_data_ready():
-            logger.debug('relation data is not ready yet',
-                         event)
+            logger.debug('relation data is not ready yet (%s)', event)
             return
 
         self._stored.is_started = True

unit_tests/test_charm.py

@@ -1,5 +1,6 @@
 import logging
 import os
+import shutil
 import sys
 import tempfile
 import unittest
@@ -24,6 +25,7 @@ CRYPTO_PASSPHRASE = '1e19bb8a-a92d-4377-8226-5e8fc475822c'
 
 class BaseTestCharm(unittest.TestCase):
     def setUp(self):
+        self.tmpdir = tempfile.TemporaryDirectory()
         self.harness = Harness(charm.KeystoneOpenIDCCharm, meta='''
             name: keystone-openidc
             provides:
@@ -40,6 +42,12 @@ class BaseTestCharm(unittest.TestCase):
         self.addCleanup(self.harness.cleanup)
         self.harness.begin()
 
+    def tearDown(self):
+        try:
+            shutil.rmtree(self.tmpdir, ignore_errors=True)
+        except Exception as ex:
+            logger.debug(ex)
+
 
 class TestRelations(BaseTestCharm):
     def test_add_relation(self):
@@ -78,20 +86,34 @@ class TestCharm(BaseTestCharm):
     @mock.patch('os.fchown')
     @mock.patch('os.chown')
     def test_render_config_leader(self, chown, fchown):
+        opts = {
+            'oidc-provider-metadata-url': WELL_KNOWN_URL,
+            'oidc-provider-issuer': 'foo',
+            'oidc-client-id': 'keystone',
+            'oidc-client-secret': 'ubuntu11',
+        }
+
+        well_known_url_content = {
+            'introspection_endpoint': INTROSPECTION_ENDPOINT_INVALID,
+        }
         self.harness.set_leader(True)
-        with tempfile.TemporaryDirectory() as tmpdir:
-            with mock.patch("charm.KeystoneOpenIDCCharm.config_dir",
+        with requests_mock.Mocker() as m, \
+                 mock.patch(  # noqa: E127
+                     "charm.KeystoneOpenIDCCharm.config_dir",
                      new_callable=mock.PropertyMock,
-                            return_value=tmpdir):
+                     return_value=self.tmpdir.name):
+            m.get(WELL_KNOWN_URL, json=well_known_url_content)
             self.harness.update_config(
-                    key_values={'oidc-provider-metadata-url': WELL_KNOWN_URL})
+                key_values=opts)
             self.harness.charm.render_config()
             fpath = self.harness.charm.options.openidc_location_config
             self.assertTrue(os.path.isfile(fpath))
             with open(fpath) as f:
                 content = f.read()
-                    self.assertIn(f'OIDCProviderMetadataURL {WELL_KNOWN_URL}',
-                                  content)
+                self.assertIn(
+                    f'OIDCProviderMetadataURL {WELL_KNOWN_URL}',
+                    content
+                )
                 self.assertIn(
                     f'OIDCCryptoPassphrase {str(self.crypto_passphrase)}',
                     content