import pytest
import core.cache as cache_mod
from core.cache import TTLCache
def test_ttlcache_set_get_and_expire(monkeypatch):
t = {"now": 0.0}
def fake_monotonic():
return t["now"]
monkeypatch.setattr(cache_mod.time, "monotonic", fake_monotonic)
c = TTLCache(ttl_seconds=10.0, maxsize=10)
c.set("k", "v")
assert c.get("k") == "v"
t["now"] = 10.0
assert c.get("k") is None
def test_ttlcache_eviction_by_maxsize(monkeypatch):
t = {"now": 0.0}
def fake_monotonic():
return t["now"]
monkeypatch.setattr(cache_mod.time, "monotonic", fake_monotonic)
c = TTLCache(ttl_seconds=100.0, maxsize=2)
c.set("a", 1)
c.set("b", 2)
c.set("c", 3)
assert c.get("a") is None
assert c.get("b") == 2
assert c.get("c") == 3
def test_ttlcache_lru_touch_moves_to_end(monkeypatch):
t = {"now": 0.0}
def fake_monotonic():
return t["now"]
monkeypatch.setattr(cache_mod.time, "monotonic", fake_monotonic)
c = TTLCache(ttl_seconds=100.0, maxsize=2)
c.set("a", 1)
c.set("b", 2)
assert c.get("a") == 1
c.set("c", 3)
assert c.get("a") == 1
assert c.get("b") is None
assert c.get("c") == 3
