iostream_test.py 文件源码

def test_write_zero_bytes(self):
        # Attempting to write zero bytes should run the callback without
        # going into an infinite loop.
        server, client = self.make_iostream_pair()
        server.write(b'', callback=self.stop)
        self.wait()
        # As a side effect, the stream is now listening for connection
        # close (if it wasn't already), but is not listening for writes
        self.assertEqual(server._state, IOLoop.READ | IOLoop.ERROR)
        server.close()
        client.close()