Add tempest test for purge queue

Change-Id: I7a5fe8c46814f9392fd9ca9896ec956d8d0e81e0

zaqar/tests/tempest_plugin/services/messaging/json/messaging_client.py

@@ -358,6 +358,16 @@ class V2MessagingClient(MessagingClient):
         self.expected_success(204, resp.status)
         return resp, body
 
+    def purge_queue(self, queue_name, resource=None):
+        uri = '{0}/queues/{1}/purge'.format(self.uri_prefix, queue_name)
+        rbody = {"resource_types": ["messages", "subscriptions"]}
+        if resource:
+            rbody = {"resource_types": resource}
+        resp, body = self.post(uri, body=json.dumps(rbody),
+                               headers=self.headers)
+        self.expected_success(204, resp.status)
+        return resp, body
+
     def show_queue_stats(self, queue_name):
         uri = '{0}/queues/{1}/stats'.format(self.uri_prefix, queue_name)
         resp, body = self.get(uri, headers=self.headers)

zaqar/tests/tempest_plugin/tests/base.py

@@ -211,6 +211,12 @@ class BaseV2MessagingTest(BaseMessagingTest):
             build_interval=CONF.compute.build_interval,
             build_timeout=CONF.compute.build_timeout)
 
+    @classmethod
+    def purge_queue(cls, queue_name, resource=None):
+        resp, body = cls.client.purge_queue(
+            queue_name, resource)
+        return resp, body
+
     @classmethod
     def create_subscription(cls, queue_name, rbody):
         resp, body = cls.client.create_subscription(

zaqar/tests/tempest_plugin/tests/v2/test_queues.py

@@ -16,11 +16,14 @@
 
 from six import moves
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest.lib import decorators
 from testtools import matchers
 
 from zaqar.tests.tempest_plugin.tests import base
 
+CONF = config.CONF
+
 
 class TestQueues(base.BaseV2MessagingTest):
 
@@ -53,6 +56,22 @@ class TestManageQueue(base.BaseV2MessagingTest):
             # Create Queue
             cls.client.create_queue(queue_name)
 
+    def _post_messages(self, repeat=CONF.messaging.max_messages_per_page,
+                       queue_name=None):
+        message_body = self.generate_message_body(repeat=repeat)
+        resp, body = self.post_messages(queue_name=queue_name,
+                                        rbody=message_body)
+        return resp, body
+
+    def _create_subscriptions(self, queue_name):
+        bodys = self.generate_subscription_body()
+        results = []
+        for body in bodys:
+            resp, body = self.create_subscription(queue_name=queue_name,
+                                                  rbody=body)
+            results.append((resp, body))
+        return results
+
     @decorators.idempotent_id('8f1fec00-54fc-48b9-aa67-c10a824b768d')
     def test_list_queues(self):
         # Listing queues
@@ -98,6 +117,31 @@ class TestManageQueue(base.BaseV2MessagingTest):
         _, body = self.get_queue_metadata(queue_name)
         self.assertThat(body, matchers.Equals(req_body))
 
+    @decorators.idempotent_id('2fb6e5a8-c18f-4407-9ee7-7a13c8e09f69')
+    def test_purge_queue(self):
+        queue_name = self.queues[0]
+        # The queue contains no messages and subscriptions by default.
+        resp, body = self.list_messages(queue_name=queue_name)
+        self.assertEqual([], body['messages'])
+        resp, body = self.list_subscription(queue_name)
+        self.assertEqual([], body['subscriptions'])
+        # Post some messages and create some subscriptions for the queue.
+        self._post_messages(queue_name=queue_name)
+        self._create_subscriptions(queue_name=queue_name)
+        # The queue contains messages and subscriptions now.
+        resp, body = self.list_messages(queue_name=queue_name)
+        self.assertIsNotNone(len(body['messages']))
+        resp, body = self.list_subscription(queue_name)
+        self.assertIsNotNone(len(body['subscriptions']))
+        # Purge the queue
+        resp, body = self.purge_queue(queue_name)
+        self.assertEqual(204, resp.status)
+        # The queue contains nothing.
+        resp, body = self.list_messages(queue_name=queue_name)
+        self.assertEqual([], body['messages'])
+        resp, body = self.list_subscription(queue_name)
+        self.assertEqual([], body['subscriptions'])
+
     @classmethod
     def resource_cleanup(cls):
         for queue_name in cls.queues: