Porting Ceilometer tests to Zaza

Porting the Amulet tests from Ceilometer to the Zaza framework.

The Amulet tests can be found here:
https://opendev.org/openstack/charm-ceilometer/src/branch/master/tests/basic_deployment.py

zaza/openstack/charm_tests/ceilometer/__init__.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Collection of code for setting up and testing ceilometer."""

zaza/openstack/charm_tests/ceilometer/setup.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Code for configuring Ceilometer."""
+
+import logging
+import zaza.model as zaza_model
+import zaza.openstack.utilities.openstack as openstack_utils
+
+
+def basic_setup(unit='ceilometer/0'):
+    """Run setup for testing Ceilometer.
+
+    Setup for testing Ceilometer is currently part of functional
+    tests.
+    """
+    current_release = openstack_utils.get_os_release()
+    xenial_pike = openstack_utils.get_os_release('xenial_pike')
+
+    if current_release < xenial_pike:
+        logging.debug('Not checking ceilometer-upgrade')
+        return
+    logging.debug('Checking ceilometer-upgrade')
+
+    action = zaza_model.run_action(
+        unit,
+        'ceilometer-upgrade',
+        raise_on_failure=True)
+
+    return action

zaza/openstack/charm_tests/ceilometer/tests.py

@@ -0,0 +1,118 @@
+#!/usr/bin/env python3
+
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Encapsulate Ceilometer testing."""
+
+import logging
+
+import zaza.openstack.utilities.openstack as openstack_utils
+import zaza.openstack.charm_tests.test_utils as test_utils
+
+
+class CeilometerTest(test_utils.OpenStackBaseTest):
+    """Encapsulate Ceilometer tests."""
+
+    @classmethod
+    def setUpClass(cls):
+        """Run class setup for running Ceilometer tests."""
+        super(CeilometerTest, cls).setUpClass()
+
+    # NOTE(beisner): need to add more functional tests
+
+    def test_900_restart_on_config_change(self):
+        """Checking restart happens on config change."""
+        # Expected default and alternate values
+        current_value = openstack_utils.get_application_config_option(
+            'ceilometer', 'debug'
+        )
+        assert type(current_value) == bool
+        new_value = not current_value
+
+        # Convert bool to str
+        current_value = str(current_value)
+        new_value = str(new_value)
+
+        set_default = {'debug': current_value}
+        set_alternate = {'debug': new_value}
+        default_entry = {'DEFAULT': {'debug': [current_value]}}
+        alternate_entry = {'DEFAULT': {'debug': [new_value]}}
+
+        # Config file affected by juju set config change
+        conf_file = '/etc/ceilometer/ceilometer.conf'
+        services = {}
+        current_release = openstack_utils.get_os_release()
+        xenial_pike = openstack_utils.get_os_release('xenial_pike')
+        xenial_ocata = openstack_utils.get_os_release('xenial_ocata')
+        xenial_newton = openstack_utils.get_os_release('xenial_newton')
+        trusty_mitaka = openstack_utils.get_os_release('trusty_mitaka')
+        trusty_liberty = openstack_utils.get_os_release('trusty_liberty')
+
+        if current_release >= xenial_pike:
+            services = {
+                'ceilometer-polling: AgentManager worker(0)': conf_file,
+                'ceilometer-agent-notification: NotificationService worker(0)':
+                    conf_file,
+            }
+        elif current_release >= xenial_ocata:
+            services = {
+                'ceilometer-collector: CollectorService worker(0)': conf_file,
+                'ceilometer-polling: AgentManager worker(0)': conf_file,
+                'ceilometer-agent-notification: NotificationService worker(0)':
+                    conf_file,
+                'apache2': conf_file,
+            }
+        elif current_release >= xenial_newton:
+            services = {
+                'ceilometer-collector - CollectorService(0)': conf_file,
+                'ceilometer-polling - AgentManager(0)': conf_file,
+                'ceilometer-agent-notification - NotificationService(0)':
+                    conf_file,
+                'ceilometer-api': conf_file,
+            }
+        else:
+            services = {
+                'ceilometer-collector': conf_file,
+                'ceilometer-api': conf_file,
+                'ceilometer-agent-notification': conf_file,
+            }
+
+            if current_release < trusty_mitaka:
+                services['ceilometer-alarm-notifier'] = conf_file
+                services['ceilometer-alarm-evaluator'] = conf_file
+
+            if current_release >= trusty_liberty:
+                # Liberty and later
+                services['ceilometer-polling'] = conf_file
+            else:
+                # Juno and earlier
+                services['ceilometer-agent-central'] = conf_file
+
+        logging.info('changing config: {}'.format(set_alternate))
+        self.restart_on_changed(
+            conf_file,
+            set_default,
+            set_alternate,
+            default_entry,
+            alternate_entry,
+            services)
+
+    def test_901_pause_resume(self):
+        """Run pause and resume tests.
+
+        Pause service and check services are stopped then resume and check
+        they are started.
+        """
+        self.pause_resume(['ceilometer'])