def test_memory_cache(self):
cache = Cache("MemoryCache")
key = [1, 2, 3]
value = "hello!"
cache.set(key, value, 0)
self.assertEqual(
cache.get(key),
value,
"Set value is not equal to returned value")
for lifespan in range(1, 3):
key = "a key"
value = "a value"
cache.set(key, value, lifespan)
self.assertEqual(
cache.get(key),
value,
"Set value is not equal to returned value")
time.sleep(lifespan / 2.0)
self.assertEqual(
cache.get(key),
value,
"Set value is not equal to returned value")
time.sleep(lifespan / 2.0)
self.assertIsNone(cache.get(key), "Key should be expired")
def test_singletons(self):
a = Cache.get_instance('DummyCache')
b = Cache.get_instance('DummyCache')
self.assertEqual(a, b, "Multiple instances were created")
self.assertEqual(hash(a), hash(b), "Multiple instances were created")
a = Cache('DummyCache')
b = Cache('DummyCache')
self.assertNotEqual(a, b, "Multiple instances were not created")
self.assertNotEqual(
hash(a),
hash(b),
"Multiple instances were not created")
def test_dummy_cache(self):
cache = Cache("DummyCache")
key = [1, 2, 3]
value = "hello!"
cache.set(key, value, 0)
self.assertIsNone(cache.get(key), "Key should be expired")
for lifespan in range(1, 3):
key = "a key"
value = "a value"
cache.set(key, value, lifespan)
self.assertIsNone(cache.get(key), "Key should be expired")
time.sleep(lifespan)
def test_generate_key(self):
a = Cache.generate_key(1, 2, 3)
b = Cache.generate_key(2, 3)
c = Cache.generate_key(1, 2)
self.assertNotEqual(a, b, "Cache keys should not be equal")
self.assertNotEqual(a, c, "Cache keys should not be equal")
self.assertNotEqual(b, c, "Cache keys should not be equal")
a = Cache.generate_key(1.2, 2.23, 3.234)
b = Cache.generate_key(2.654, 3.876)
c = Cache.generate_key(1.123, 2.098)
self.assertNotEqual(a, b, "Cache keys should not be equal")
self.assertNotEqual(a, c, "Cache keys should not be equal")
self.assertNotEqual(b, c, "Cache keys should not be equal")
a = Cache.generate_key([1, 2, 3])
b = Cache.generate_key([2, 3])
c = Cache.generate_key([1, 2])
self.assertNotEqual(a, b, "Cache keys should not be equal")
self.assertNotEqual(a, c, "Cache keys should not be equal")
self.assertNotEqual(b, c, "Cache keys should not be equal")
a = Cache.generate_key({'a': 1, 'b': 2, 'c': 5})
b = Cache.generate_key({'b': 2, 'c': 5})
c = Cache.generate_key({'a': 1, 'b': 2})
self.assertNotEqual(a, b, "Cache keys should not be equal")
self.assertNotEqual(a, c, "Cache keys should not be equal")
self.assertNotEqual(b, c, "Cache keys should not be equal")