def METHOD_NAME(self, tmp_path):
    with Image.open("Tests/images/dispose_bgnd.gif") as im:
        assert im.info["duration"] == 1000
        out_webp = str(tmp_path / "temp.webp")
        im.save(out_webp, save_all=True)
    with Image.open(out_webp) as reloaded:
        assert reloaded.info["duration"] == 1000