def test_reading_from_stdin_is_not_diverted(self, sys):
def sample(**kwargs):
assert kwargs["stdin"] is None
assert kwargs["stdout"] is None
sys.stdin.fileno.side_effect = io.UnsupportedOperation
utils.wrap_subprocess_call(sample)(stdin=None, stdout=None)
def test_writing_to_stderr_is_diverted_if_broken(self, sys):
def sample(**kwargs):
assert kwargs["stderr"] is not None
assert kwargs["stderr"] is not sys.stdout
sys.stderr.fileno.side_effect = io.UnsupportedOperation
utils.wrap_subprocess_call(sample)(stderr=None)
def test_writing_to_stdout_is_not_diverted_if_wrapstdout_is_false(self, sys):
def sample(**kwargs):
assert kwargs["stdin"] is None
assert kwargs["stdout"] is None
sys.stdout.fileno.side_effect = io.UnsupportedOperation
utils.wrap_subprocess_call(sample, wrap_stdout=False)(stdin=None, stdout=None)
def test_writing_to_broken_stderr_is_output_after_returning(self, sys):
def sample(**kwargs):
kwargs["stderr"].write(b"Output")
# The output isn't written until we return
sys.stderr.write.assert_not_called()
sys.stderr.fileno.side_effect = io.UnsupportedOperation
utils.wrap_subprocess_call(sample)(stderr=None)
sys.stderr.write.assert_called_once_with(b"Output")
def test_arbitrary_outputs_are_not_replaced_even_if_stdout_is_broken(self, sys):
output = io.StringIO()
def sample(**kwargs):
assert kwargs["stdin"] is None
assert kwargs["stdout"] is output
sys.stdout.fileno.side_effect = io.UnsupportedOperation
utils.wrap_subprocess_call(sample)(stdin=None, stdout=output)
def test_writing_to_stdout_unaffected_by_default(self):
def sample(**kwargs):
assert kwargs["stdin"] is None
assert kwargs["stdout"] is None
utils.wrap_subprocess_call(sample)(stdin=None, stdout=None)
