File size: 1,358 Bytes
cb0011e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | from ttlcache import FakeClock, TTLCache
def test_get_refreshes_recency():
clock = FakeClock()
cache = TTLCache(maxsize=2, ttl=10.0, clock=clock)
cache["a"] = 1
cache["b"] = 2
assert cache["a"] == 1
cache["c"] = 3
assert "a" in cache
assert "b" not in cache
def test_overwrite_refreshes_recency():
clock = FakeClock()
cache = TTLCache(maxsize=2, ttl=10.0, clock=clock)
cache["a"] = 1
cache["b"] = 2
cache["a"] = 9
cache["c"] = 3
assert cache["a"] == 9
assert "b" not in cache
def test_setdefault_refreshes_recency():
clock = FakeClock()
cache = TTLCache(maxsize=2, ttl=10.0, clock=clock)
cache["a"] = 1
cache["b"] = 2
assert cache.setdefault("a", lambda: 99) == 1
cache["c"] = 3
assert "a" in cache
assert "b" not in cache
def test_len_ignores_expired_entries():
clock = FakeClock()
cache = TTLCache(maxsize=4, ttl=10.0, clock=clock)
cache["a"] = 1
clock.advance(5)
cache["b"] = 2
clock.advance(6)
assert len(cache) == 1
assert "a" not in cache
assert "b" in cache
def test_items_reports_least_recently_used_first():
clock = FakeClock()
cache = TTLCache(maxsize=3, ttl=10.0, clock=clock)
cache["a"] = 1
cache["b"] = 2
assert cache["a"] == 1
assert list(cache.items()) == [("b", 2), ("a", 1)]
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