tests: added unit tests for all templates

Change-Id: Icf3ca3aa151d063cc21c45f5a949695c83399a25

openstack_operator/tests/unit/base.py

@@ -0,0 +1,74 @@
+# Copyright 2020 VEXXHOST, Inc.
+#
+# 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.
+
+"""Base test classes
+
+This module contains the base test classes.
+"""
+
+import testtools
+
+import yaml
+
+from openstack_operator import utils
+
+
+class BaseTestCase(testtools.TestCase):
+    """Base test class for the OpenStack operator."""
+
+
+class KubernetesObjectTestCase(testtools.TestCase):
+    """Base class for Kubernetes object tests."""
+
+    SAMPLES_PATH = 'config/samples'
+
+    @classmethod
+    def setUpClass(cls):
+        sample_path = "%s/%s" % (cls.SAMPLES_PATH, cls.SAMPLE_FILE)
+        with open(sample_path) as sample_fd:
+            sample = yaml.load(sample_fd, Loader=yaml.FullLoader)
+        name = sample['metadata']['name']
+        spec = sample['spec']
+
+        cls.object = utils.render_template(cls.TEMPLATE_FILE,
+                                           name=name, spec=spec)
+
+
+class KubernetesAppTestCaseMixin:
+    """Mix-in to be used for tests that involve apps and containers."""
+
+    def test_containers_have_liveness_probe(self):
+        """Ensure that all containers have liveness probes."""
+        for container in self.object['spec']['template']['spec']['containers']:
+            self.assertIn('livenessProbe', container)
+
+    def test_containers_have_readiness_probe(self):
+        """Ensure that all containers have readiness probes."""
+        for container in self.object['spec']['template']['spec']['containers']:
+            self.assertIn('readinessProbe', container)
+
+    def test_containers_have_resource_limits(self):
+        """Ensure that all containers have resource limits."""
+        for container in self.object['spec']['template']['spec']['containers']:
+            self.assertIn('resources', container)
+
+
+class DeploymentTestCase(KubernetesObjectTestCase,
+                         KubernetesAppTestCaseMixin):
+    """Basic tests for Kubernetes Deployments."""
+
+
+class StatefulSetTestCase(KubernetesObjectTestCase,
+                          KubernetesAppTestCaseMixin):
+    """Basic tests for Kubernetes StatefulSets."""

openstack_operator/tests/unit/test_mcrouter.py

@@ -0,0 +1,27 @@
+# Copyright 2020 VEXXHOST, Inc.
+#
+# 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.
+
+"""Tests for Mcrouter Operator
+
+This module contains all the tests for the Mcrouter operator.
+"""
+
+from openstack_operator.tests.unit import base
+
+
+class McrouterDeploymentTestCase(base.StatefulSetTestCase):
+    """Basic tests for the Deployment."""
+
+    SAMPLE_FILE = 'infrastructure_v1alpha1_mcrouter.yaml'
+    TEMPLATE_FILE = 'mcrouter/deployment.yml.j2'

openstack_operator/tests/unit/test_memcached.py

@@ -20,11 +20,10 @@ This module contains all the tests for the Memcached operator.
 # Disable no-self-use
 # pylint: disable=R0201
 
-import mock
-
-from oslotest import base
+from unittest import mock
 
 from openstack_operator import memcached
+from openstack_operator.tests.unit import base
 
 
 class MemcachedOperatorTestCase(base.BaseTestCase):
@@ -37,3 +36,10 @@ class MemcachedOperatorTestCase(base.BaseTestCase):
         memcached.create_or_resume("foo", {})
         mock_ensure_absent.assert_called_once_with(
             'memcached/deployment.yml.j2', name="foo", spec={})
+
+
+class MemcachedStatefulSetTestCase(base.StatefulSetTestCase):
+    """Basic tests for the StatefulSet."""
+
+    SAMPLE_FILE = 'infrastructure_v1alpha1_memcached.yaml'
+    TEMPLATE_FILE = 'memcached/statefulset.yml.j2'

openstack_operator/utils.py

@@ -88,6 +88,17 @@ def ensure_absent(template, **kwargs):
     resource.delete()
 
 
+def render_template(template, **kwargs):
+    """Render template from YAML files.
+
+    This function renders a template based on provided keyword arguments.
+    """
+
+    template = ENV.get_template(template)
+    yamldoc = template.render(**kwargs)
+    return yaml.safe_load(yamldoc)
+
+
 def generate_yaml(template, **kwargs):
     """Generate dictionary from YAML template.
 
@@ -96,9 +107,7 @@ def generate_yaml(template, **kwargs):
     cluster.
     """
 
-    template = ENV.get_template(template)
-    yamldoc = template.render(**kwargs)
-    doc = yaml.safe_load(yamldoc)
+    doc = render_template(template, **kwargs)
     kopf.adopt(doc)
 
     return doc

test-requirements.txt

@@ -1,4 +1,3 @@
 flake8
 pylint
-oslotest
 stestr