iostream_test.py 文件源码

def test_pipe_iostream_big_write(self):
        r, w = os.pipe()

        rs = PipeIOStream(r, io_loop=self.io_loop)
        ws = PipeIOStream(w, io_loop=self.io_loop)

        NUM_BYTES = 1048576

        # Write 1MB of data, which should fill the buffer
        ws.write(b"1" * NUM_BYTES)

        rs.read_bytes(NUM_BYTES, self.stop)
        data = self.wait()
        self.assertEqual(data, b"1" * NUM_BYTES)

        ws.close()
        rs.close()