def test_that_cache_respects_max_size(self):
timeout = 0.1
cache = Cache(timeout, max_size=2)
cache.set("hello", "world")
self.assertEquals(len(cache), 1)
cache.set("how", "are")
self.assertEquals(len(cache), 2)
cache.set("you", "today?")
self.assertEquals(len(cache), 2)
self.assertEquals(cache.get("you"), "today?")
self.assertEquals(cache.get("how"), "are")
self.assertRaises(KeyError, cache.get, "hello")
def test_that_cache_items_are_ungettable_once_expired(self):
timeout = 0.1
cache = Cache(timeout)
cache.set("hello", "world")
self.assertEquals(cache.get("hello"), "world")
time.sleep(timeout / 2)
self.assertEquals(cache.get("hello"), "world")
time.sleep(timeout / 2)
self.assertRaises(KeyError, cache.get, "hello")
def test_that_you_cant_set_duplicate_cache_keys(self):
timeout = 0.1
cache = Cache(timeout)
cache.set("hello", "world")
try:
cache.set("hello", "spamityspam")
except KeyExistsError, e:
self.assertEquals(e.key, "hello")
self.assertEquals(e.value, "world")
def test_that_you_cant_set_duplicate_cache_keys(self):
timeout = 0.1
cache = Cache(timeout)
cache.set("hello", "world")
try:
cache.set("hello", "spamityspam")
except KeyExistsError as e:
self.assertEquals(e.key, "hello")
self.assertEquals(e.value, "world")
else:
assert False, "KeyExistsError was not raised" # pragma: nocover
