def METHOD_NAME(self, output_dir: str):
    output_path = Path(output_dir)
    output_files = list(output_path.glob('*.zip'))
    if len(output_files) == 1:
        return True
    self.fail(f"Expected {output_dir} to contain one zip, but has {len(output_files)}: "
              f"{list(output_path.glob('*'))}")