Fix requirements of message_delete_many API

We must not require message_ids, as the message_delete_many API can be
called with pop_limit, and then needs to be called without message_ids.

Change-Id: Iefafc5029a639f2f60608af02e6de79a9fb4eddc
Closes-Bug: #1532837

zaqar/api/v1/request.py

@@ -294,7 +294,7 @@ class RequestSchema(api.Api):
                         'message_ids': {'type': 'array'},
                         'pop': {'type': 'integer'}
                     },
-                    'required': ['queue_name', 'message_ids'],
+                    'required': ['queue_name'],
                 }
             },
             'required': ['action', 'headers', 'body']

zaqar/tests/unit/transport/websocket/v2/test_messages.py

@@ -514,6 +514,26 @@ class MessagesBaseTest(base.V2Base):
         resp = json.loads(send_mock.call_args[0][0])
         self.assertEqual(204, resp['headers']['status'])
 
+    def test_pop_delete(self):
+        self._post_messages("kitkat", repeat=5)
+
+        action = "message_delete_many"
+        body = {"queue_name": "kitkat",
+                "pop_limit": 2}
+
+        send_mock = mock.Mock()
+        self.protocol.sendMessage = send_mock
+
+        req = test_utils.create_request(action, body, self.headers)
+
+        self.protocol.onMessage(req, False)
+
+        resp = json.loads(send_mock.call_args[0][0])
+        self.assertEqual(200, resp['headers']['status'])
+        self.assertEqual(2, len(resp['body']['messages']))
+        self.assertEqual(239, resp['body']['messages'][0]['body'])
+        self.assertEqual(239, resp['body']['messages'][1]['body'])
+
     def test_get_nonexistent_message_404s(self):
         action = "message_get"
         body = {"queue_name": "notthere",