v1.1 and v2 claims return document not list

The current claims code doesn't work on v1.1 and v2 because on claims
creation it expects a list rather than a document. This patch fixes this
issue in a backwards compatible way.

Change-Id: I64e824227f148297aba4c27bbd2053d5bab483c5
Closes-bug: #1489863

tests/unit/queues/v1/test_claims.py

@@ -25,7 +25,7 @@ class QueuesV1ClaimsHttpUnitTest(claims.QueueV1ClaimUnitTest):
     version = 1
 
 
-class QueuesV1_1ClaimsHttpUnitTest(claims.QueueV1ClaimUnitTest):
+class QueuesV1_1ClaimsHttpUnitTest(claims.QueueV1_1ClaimUnitTest):
 
     transport_cls = http.HttpTransport
     url = 'http://127.0.0.1:8888/v1.1'

zaqarclient/queues/v1/claim.py

@@ -59,9 +59,13 @@ class Claim(object):
                                  ttl=self._ttl,
                                  grace=self._grace,
                                  limit=self._limit)
+
         # extract the id from the first message
         if msgs is not None:
+            if self._queue.client.api_version >= 1.1:
+                msgs = msgs['messages']
             self.id = msgs[0]['href'].split('=')[-1]
+
         self._message_iter = iterate._Iterator(self._queue.client,
                                                msgs or [],
                                                'messages',

zaqarclient/tests/queues/claims.py

@@ -137,3 +137,33 @@ class QueuesV1ClaimFunctionalTest(base.QueuesTestBase):
         claim_id = cl.id
         cl.delete()
         self.assertRaises(errors.ResourceNotFound, queue.claim, id=claim_id)
+
+
+class QueueV1_1ClaimUnitTest(QueueV1ClaimUnitTest):
+
+    def test_claim(self):
+        result = [{
+            'href': '/v1/queues/fizbit/messages/50b68a50d6f5b8c8a7c62b01',
+            'ttl': 800,
+            'age': 790,
+            'body': {'event': 'ActivateAccount', 'mode': 'active'}
+        }, {
+            'href': '/v1/queues/fizbit/messages/50b68a50d6f5b8c8a7c62b02',
+            'ttl': 800,
+            'age': 790,
+            'body': {'event': 'ActivateAccount', 'mode': 'active'}
+        }]
+
+        with mock.patch.object(self.transport, 'send',
+                               autospec=True) as send_method:
+
+            resp = response.Response(None, json.dumps({'messages': result}))
+            send_method.return_value = resp
+
+            claimed = self.queue.claim(ttl=60, grace=60)
+            # messages doesn't support len()
+            num_tested = 0
+            for num, msg in enumerate(claimed):
+                num_tested += 1
+                self.assertEqual(result[num]['href'], msg.href)
+            self.assertEqual(len(result), num_tested)