def test_subscriber_attach_rec(self):
     s = Subscriber('localhost', '10001', 10)
     s.context = zmq.Context()
     s.socket = s.context.socket(zmq.SUB)
     s.socket.connect(f"tcp://{s.address}:6665")
     self.assertEqual(s.socket.setsockopt_string(zmq.SUBSCRIBE, s.zip_code), None)