test_ioloop.py 文件源码

def test_poller_events(self):
        """Tornado poller implementation maps events correctly"""
        req,rep = self.create_bound_pair(zmq.REQ, zmq.REP)
        poller = ioloop.ZMQPoller()
        poller.register(req, ioloop.IOLoop.READ)
        poller.register(rep, ioloop.IOLoop.READ)
        events = dict(poller.poll(0))
        self.assertEqual(events.get(rep), None)
        self.assertEqual(events.get(req), None)

        poller.register(req, ioloop.IOLoop.WRITE)
        poller.register(rep, ioloop.IOLoop.WRITE)
        events = dict(poller.poll(1))
        self.assertEqual(events.get(req), ioloop.IOLoop.WRITE)
        self.assertEqual(events.get(rep), None)

        poller.register(rep, ioloop.IOLoop.READ)
        req.send(b'hi')
        events = dict(poller.poll(1))
        self.assertEqual(events.get(rep), ioloop.IOLoop.READ)
        self.assertEqual(events.get(req), None)