from app.public_cache import PublicResponseCache


def test_cache_copies_values_and_invalidates() -> None:
    cache = PublicResponseCache()
    original = [{"score": 10}]
    cache.set(("activity",), original)
    original[0]["score"] = 99
    assert cache.get(("activity",), 20) == [{"score": 10}]
    cache.invalidate()
    assert cache.get(("activity",), 20) is None