"""Test della TTLCache: in particolare l'invalidazione per prefisso."""
from __future__ import annotations

from web.services.cache import TTLCache


def test_delete_prefix_removes_only_matching_keys():
    cache: TTLCache[int] = TTLCache(max_items=10, ttl=3600)
    cache.set("docA|svg|0", 1)
    cache.set("docA|png|1", 2)
    cache.set("docB|svg|0", 3)

    removed = cache.delete_prefix("docA|")

    assert removed == 2
    assert cache.get("docA|svg|0") is None
    assert cache.get("docA|png|1") is None
    assert cache.get("docB|svg|0") == 3


def test_delete_prefix_no_match_returns_zero():
    cache: TTLCache[int] = TTLCache(max_items=10, ttl=3600)
    cache.set("docB|svg|0", 3)
    assert cache.delete_prefix("docA|") == 0
    assert cache.get("docB|svg|0") == 3