Raises an error if the queue name is empty

If the queue name is empty, it does not send it to the server and
raises an exception instead.

closes bug: #1397177

Change-Id: I7742752c4bad0863d0eafa52cf4c7c89360cd108

zaqarclient/queues/v1/queues.py

@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from zaqarclient._i18n import _  # noqa
 from zaqarclient import errors
 from zaqarclient.queues.v1 import claim as claim_api
 from zaqarclient.queues.v1 import core
@@ -25,6 +26,9 @@ class Queue(object):
     def __init__(self, client, name, auto_create=True):
         self.client = client
 
+        if name == "":
+            raise ValueError(_('Queue name does not have a value'))
+
         # NOTE(flaper87) Queue Info
         self._name = name
         self._metadata = None

zaqarclient/tests/queues/queues.py

@@ -66,6 +66,9 @@ class QueuesV1QueueUnitTest(base.QueuesTestBase):
             # just checking our way down to the transport
             # doesn't crash.
 
+    def test_queue_valid_name(self):
+        self.assertRaises(ValueError, self.client.queue, "")
+
     def test_queue_delete(self):
         with mock.patch.object(self.transport, 'send',
                                autospec=True) as send_method: