public function testSendHandlerNoReturn()
 {
     $gateway = $this->getTableGateway();
     $handler = new QueueSubscriber($gateway);
     $now = new DateTime('1-11-2013 13:36:00');
     # only pickup 2 locked error jobs from 3 available
     $limit = 10;
     $send_event = new QueueSendEvent('41d4-a716-446655440000', $now);
     $handler->onSend($send_event);
     $this->assertNull($send_event->getResult());
 }