def _testAsyncFunctionStdin(self, loop=None):
test_string = '1\n2\n3\n'
pr, pw = os.pipe()
fd_pipes = {0: pr}
reader = AsyncFunction(scheduler=loop,
fd_pipes=fd_pipes,
target=self._read_from_stdin,
args=(pw, ))
reader.start()
os.close(pr)
_set_nonblocking(pw)
with open(pw, mode='wb', buffering=0) as pipe_write:
yield _writer(pipe_write, test_string.encode('utf_8'), loop=loop)
self.assertEqual((yield reader.async_wait()), os.EX_OK)
self.assertEqual(reader.result, test_string)
def async_main(fork_exitcode, loop=None):
loop = asyncio._wrap_loop(loop)
proc = AsyncFunction(scheduler=loop, target=fork_main)
proc.start()
proc.async_wait().add_done_callback(
lambda future: fork_exitcode.set_result(future.result()))