def test_reset():
cache = LRUCache(3)
cache.put(1, 30)
cache.put(3, 50)
cache.reset()
assert cache.get(1) == -1
assert cache.get(3) == -1
def test_size_maximum():
cache = LRUCache(3)
cache.put(1, 30)
cache.put(3, 50)
cache.put(4, 90)
cache.put(6, 25)
assert cache.get(1) == -1
assert cache.get(6) == 25
def test_invalid_value():
with pytest.raises(ValueError):
cache = LRUCache(3)
cache.put(3, "value")
def test_invalid_key():
with pytest.raises(ValueError):
cache = LRUCache(3)
cache.put(3.5, 10)
def test_size_error():
with pytest.raises(ValueError):
cache = LRUCache(0)
def test_put_and_get():
cache = LRUCache(3)
cache.put(1, 30)
cache.put(3, 50)
assert cache.get(3) == 50
def test_delete():
cache = LRUCache(3)
cache.put(1, 30)
assert cache.get(1) == 30
cache.delete(1)
assert cache.get(1) == -1
def test_least_recently_used():
cache = LRUCache(3)
cache.put(1, 30)
cache.put(3, 50)
cache.put(4, 90)
cache.get(1)
cache.put(6, 25)
assert cache.get(3) == -1
assert cache.get(1) == 30
assert cache.get(6) == 25