Method writer

Lib/test/test_ioctl.py:176–180

()

        write_finished = threading.Event()

        def writer():
            os.write(wfd, b'abc')
            self.assertTrue(write_suspended.wait(support.SHORT_TIMEOUT))
            os.write(wfd, b'def')
            write_finished.set()

        with threading_helper.start_threads([threading.Thread(target=writer)]):
            self.assertEqual(os.read(rfd, 3), b'abc')