Method test_stdin_stdout

Lib/test/test_asyncio/test_subprocess.py:148–172

(self)

class SubprocessMixin:

    def test_stdin_stdout(self):
        args = PROGRAM_CAT

        async def run(data):
            proc = await asyncio.create_subprocess_exec(
                *args,
                stdin=subprocess.PIPE,
                stdout=subprocess.PIPE,
            )

            # feed data
            proc.stdin.write(data)
            await proc.stdin.drain()
            proc.stdin.close()

            # get output and exitcode
            data = await proc.stdout.read()
            exitcode = await proc.wait()
            return (exitcode, data)

        task = run(b'some data')
        task = asyncio.wait_for(task, 60.0)
        exitcode, stdout = self.loop.run_until_complete(task)
        self.assertEqual(exitcode, 0)
        self.assertEqual(stdout, b'some data')

    def test_communicate(self):
        args = PROGRAM_CAT