def testLRUReplacementPolicy(self):
cache = projector_plugin.LRUCache(2)
cache.set('a', 1)
cache.set('b', 2)
cache.set('c', 3)
self.assertIsNone(cache.get('a'))
self.assertEqual(cache.get('b'), 2)
self.assertEqual(cache.get('c'), 3)
# Make 'b' the most recently used.
cache.get('b')
cache.set('d', 4)
# Make sure 'c' got replaced with 'd'.
self.assertIsNone(cache.get('c'))
self.assertEqual(cache.get('b'), 2)
self.assertEqual(cache.get('d'), 4)
def testLRUReplacementPolicy(self):
cache = projector_plugin.LRUCache(2)
cache.set("a", 1)
cache.set("b", 2)
cache.set("c", 3)
self.assertIsNone(cache.get("a"))
self.assertEqual(cache.get("b"), 2)
self.assertEqual(cache.get("c"), 3)
# Make 'b' the most recently used.
cache.get("b")
cache.set("d", 4)
# Make sure 'c' got replaced with 'd'.
self.assertIsNone(cache.get("c"))
self.assertEqual(cache.get("b"), 2)
self.assertEqual(cache.get("d"), 4)
def testErrorsWhenSettingNoneAsValue(self):
cache = projector_plugin.LRUCache(1)
with self.assertRaises(ValueError):
cache.set('a', None)
def testSimpleGetAndSet(self):
cache = projector_plugin.LRUCache(1)
value = cache.get('a')
self.assertIsNone(value)
cache.set('a', 10)
self.assertEqual(cache.get('a'), 10)
def testInvalidSize(self):
with self.assertRaises(ValueError):
projector_plugin.LRUCache(0)
