Add functional test for notify.logger

To make sure notify.logger always play well with messaging(v2) driver.
Achieve this by seting up a logger with target logging handler, doing real
logging, finally check notifications that receive from message broker.

Change-Id: I234457974ca48689b9dfc9f7c72b4ea37a57a40b

oslo_messaging/tests/functional/notify/test_logger.py

@@ -0,0 +1,86 @@
+# Copyright 2015 NetEase Corp.
+#
+#    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.
+
+import logging
+
+import testscenarios
+
+import oslo_messaging
+from oslo_messaging.tests.functional import utils
+
+load_tests = testscenarios.load_tests_apply_scenarios
+
+
+class LoggingNotificationHandlerTestCase(utils.SkipIfNoTransportURL):
+    """Test case for `oslo_messaging.LoggingNotificationHandler`
+
+    Build up a logger using this handler, then test logging under messaging and
+    messagingv2 driver. Make sure receive expected logging notifications.
+    """
+
+    _priority = [
+        ('debug', dict(priority='debug')),
+        ('info', dict(priority='info')),
+        ('warn', dict(priority='warn')),
+        ('error', dict(priority='error')),
+        ('critical', dict(priority='critical')),
+    ]
+
+    _driver = [
+        ('messaging', dict(driver='messaging')),
+        ('messagingv2', dict(driver='messagingv2')),
+    ]
+
+    @classmethod
+    def generate_scenarios(cls):
+        cls.scenarios = testscenarios.multiply_scenarios(cls._priority,
+                                                         cls._driver)
+
+    def test_logging(self):
+        if self.url.startswith("amqp:"):
+            self.skipTest("#1438742")
+
+        # NOTE(gtt): Using different topic to make tests run in parallel
+        topic = 'test_logging_%s_driver_%s' % (self.priority, self.driver)
+
+        self.conf.notification_driver = [self.driver]
+        self.conf.notification_topics = [topic]
+
+        listener = self.useFixture(
+            utils.NotificationFixture(self.url, [topic]))
+
+        log_notify = oslo_messaging.LoggingNotificationHandler(self.url)
+
+        log = logging.getLogger(topic)
+        log.setLevel(logging.DEBUG)
+        log.addHandler(log_notify)
+
+        log_method = getattr(log, self.priority)
+        log_method('Test logging at priority: %s' % self.priority)
+
+        events = listener.get_events(timeout=1)
+        self.assertEqual(len(events), 1)
+
+        info_event = events[0]
+
+        self.assertEqual(info_event[0], self.priority)
+        self.assertEqual(info_event[1], 'logrecord')
+
+        for key in ['name', 'thread', 'extra', 'process', 'funcName',
+                    'levelno', 'processName', 'pathname', 'lineno',
+                    'msg', 'exc_info', 'levelname']:
+            self.assertTrue(key in info_event[2])
+
+
+LoggingNotificationHandlerTestCase.generate_scenarios()