ioloop_test.py 文件源码

def test_handler_callback_file_object(self):
        """The handler callback receives the same fd object it passed in."""
        server_sock, port = bind_unused_port()
        fds = []

        def handle_connection(fd, events):
            fds.append(fd)
            conn, addr = server_sock.accept()
            conn.close()
            self.stop()
        self.io_loop.add_handler(server_sock, handle_connection, IOLoop.READ)
        with contextlib.closing(socket.socket()) as client_sock:
            client_sock.connect(('127.0.0.1', port))
            self.wait()
        self.io_loop.remove_handler(server_sock)
        self.io_loop.add_handler(server_sock.fileno(), handle_connection,
                                 IOLoop.READ)
        with contextlib.closing(socket.socket()) as client_sock:
            client_sock.connect(('127.0.0.1', port))
            self.wait()
        self.assertIs(fds[0], server_sock)
        self.assertEqual(fds[1], server_sock.fileno())
        self.io_loop.remove_handler(server_sock.fileno())
        server_sock.close()