def get_wallpapers_filenames(get_wallpapers_urls_from_file) -> tuple:
    """
    Fixture. Get names of wallpapers files.

    Args:
        get_wallpapers_urls_from_file (Fixture): fixture that return
            names and URLs of the wallpapers as a dict.

    Returns:
        tuple: tuple of lists with filenames of wallpapers.
            One list contains filenames of wallpapers with calendar.
            Second list contains filenames of wallpapers without calendar.
    """
    wallpapers_files_names = get_wallpapers_urls_from_file.keys()
    with_calendar_wallpapers_files_names = []
    without_calendar_wallpapers_files_names = []
    for wallapper_file_name in wallpapers_files_names:
        if "-cal-" in wallapper_file_name:
            with_calendar_wallpapers_files_names.append(wallapper_file_name)
        else:
            without_calendar_wallpapers_files_names.append(wallapper_file_name)
    return (
        with_calendar_wallpapers_files_names.sort(),
        without_calendar_wallpapers_files_names.sort(),
    )