Add Memcached functional tests to gate

Change-Id: Ieca5e59e36879ce1e0277ee17a1fbe40c7316958

.zuul.yaml

@@ -1,3 +1,12 @@
+## Functional Tests env vars
+#
+# PIFPAF_DAEMON:
+#   The binary to be installed by bindep filtered with
+#   [tests-functional-{PIFPAF_DAEMON}] and executed by pifpaf.
+#
+# OSLO_BACKEND:
+#   The functional test directory to pass to STESTR_TEST_PATH
+
 - job:
     name: oslo.cache-functional
     parent: openstack-tox
@@ -12,10 +21,22 @@
     vars:
       tox_environment:
         PIFPAF_DAEMON: etcd
-        # The next env var correspond to the functional test
-        # directory to pass to STESTR_TEST_PATH
         OSLO_BACKEND: etcd3gw
 
+- job:
+    name: oslo.cache-functional-memcached
+    parent: oslo.cache-functional
+    vars:
+      tox_environment:
+        PIFPAF_DAEMON: memcached
+
+- job:
+    name: oslo.cache-functional-dogpile.cache.bmemcached
+    parent: oslo.cache-functional-memcached
+    vars:
+      tox_environment:
+          OSLO_BACKEND: dogpile_cache_bmemcached
+
 - project:
     templates:
       - check-requirements
@@ -28,3 +49,4 @@
     check:
       jobs:
         - oslo.cache-functional-etcd3gw
+        - oslo.cache-functional-dogpile.cache.bmemcached

bindep.txt

@@ -2,3 +2,4 @@
 # More info at: https://docs.openstack.org/infra/bindep/readme.html
 
 etcd [tests-functional-etcd]
+memcached [tests-functional-memcached]

oslo_cache/tests/functional/dogpile_cache_bmemcached/test_cache_backend.py

@@ -0,0 +1,29 @@
+#    Copyright 2020 Red Hat, 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.
+
+from oslo_cache.tests.functional import test_base
+
+
+class TestDogpileCacheBMemcachedBackend(test_base.BaseTestCaseCacheBackend):
+    def setUp(self):
+        self.config_fixture.config(
+            group="cache",
+            backend="dogpile.cache.bmemcached",
+            memcache_servers="localhost:11212",
+        )
+
+        # NOTE(hberaud): super must be called after all to ensure that
+        # config fixture is properly initialized with value related to
+        # the current backend in use.
+        super().setUp()

oslo_cache/tests/functional/etcd3gw/test_cache_backend.py

@@ -12,22 +12,18 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_config import fixture as config_fixture
-
 from oslo_cache.tests.functional import test_base
 
 
 class TestEtcdCacheBackend(test_base.BaseTestCaseCacheBackend):
     def setUp(self):
-        self.config_fixture = self.useFixture(config_fixture.Config())
         self.config_fixture.config(
             group='cache',
             backend='oslo_cache.etcd3gw',
-            enabled=True,
-            proxies=['oslo_cache.testing.CacheIsolatingProxy'],
             backend_argument=['host:127.0.0.1', 'port:2379']
         )
+
         # NOTE(hberaud): super must be called after all to ensure that
         # config fixture is properly initialized with value related to
         # the current backend in use.
-        super(TestEtcdCacheBackend, self).setUp()
+        super().setUp()

oslo_cache/tests/functional/test_base.py

@@ -12,6 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from oslo_config import fixture
 from oslo_utils import uuidutils
 from oslotest import base
 
@@ -22,23 +23,31 @@ NO_VALUE = cache.NO_VALUE
 
 
 class BaseTestCaseCacheBackend(base.BaseTestCase):
-
     def setUp(self):
-        super(BaseTestCaseCacheBackend, self).setUp()
-        if not hasattr(self, 'config_fixture'):
-            raise Exception("Functional tests base class can't be used "
-                            "directly first you should define a test class "
-                            "backend wrapper to init the related "
-                            "config fixture")
+        super().setUp()
+
+        self.conf = self.config_fixture.conf
+
         self.region = cache.create_region()
-        cache.configure_cache_region(self.config_fixture.conf, self.region)
         self.region_kwargs = cache.create_region(
             function=cache.kwarg_function_key_generator
         )
-        cache.configure_cache_region(
-            self.config_fixture.conf,
-            self.region_kwargs
-        )
+
+        cache.configure_cache_region(self.conf, self.region)
+        cache.configure_cache_region(self.conf, self.region_kwargs)
+
+    @property
+    def config_fixture(self):
+        if not hasattr(self, "_config_fixture"):
+            self._config_fixture = self.useFixture(fixture.Config())
+
+            # default config for all tests
+            self._config_fixture.config(
+                group="cache",
+                enabled=True,
+            )
+
+        return self._config_fixture
 
     def test_backend_get_missing_data(self):
         random_key = uuidutils.generate_uuid(dashed=False)