def get_dir_from_zipfile(zip_file, fallback=None):
    """Return the name of the root folder in a zip file.

    :param zip_file: a :class:`zipfile.ZipFile` instance.
    :param fallback: if `None`, the name of the zip file is used. This is
        returned if the zip file contains more than one top-level directory,
        or none at all.
    """
    fallback = fallback or zip_file.filename
    directories = [name for name in zip_file.namelist() if name.endswith("/")
                   and len(PurePath(name).parts) == 1]
    return fallback if len(directories) > 1 else directories[0]
def test_when_verbose_and_retcode_is_nonzero_output_should_be_had():
    expected_stderr = "this is something fnord"
    with patch.dict(
        pdbedit.__salt__,
        {
            "cmd.run_all": MagicMock(
                return_value={"stdout": "", "stderr": expected_stderr, "retcode": 1}
            )
        },
    ), patch("salt.modules.pdbedit.log.error", autospec=True) as fake_error_log:
        pdbedit.list_users(verbose=True)
        actual_error = fake_error_log.mock_calls[0].args[0]
        assert actual_error == expected_stderr