def METHOD_NAME(tmp_path: Path):
    with MultiCache(tmp_path) as cache:
        assert cache["1"]
        assert cache["2"]
        assert len(cache) == 2
        assert len(list(tmp_path.iterdir())) == 2
        del cache["1"]
        assert len(cache) == 1
        assert len(list(tmp_path.iterdir())) == 1