def test_store_literal(self):
cache = Cache(self.__dir, 10)
val = b"0123456789"
cache.set("key", val)
self.assertEqual(cache.size, 10)
self.assertTrue(cache.has("key"))
self.assertEqual(cache.get_value("key"), val)
def test_not_expired(self):
cache = Cache(self.__dir, 40, min_time=1)
val = b"0123456789"
cache.set("key1", val)
with self.assertRaises(ProtectedError):
cache.delete("key1")
time.sleep(1)
cache.delete("key1")
self.assertEqual(cache.size, 0)
def test_delete(self):
cache = Cache(self.__dir, 25, min_time=0)
val = b"0123456789"
cache.set("key1", val)
self.assertTrue(cache.has("key1"))
self.assertEqual(cache.size, 10)
cache.delete("key1")
self.assertFalse(cache.has("key1"))
self.assertEqual(cache.size, 0)
def test_access_data(self):
cache = Cache(self.__dir, 25, min_time=0)
val = b"0123456789"
cache.set("key", val)
self.assertEqual(cache.get_value("key"), val)
with cache.get_fileobj("key") as f:
self.assertEqual(f.read(), val)
with open(cache.get("key"), "rb") as f:
self.assertEqual(f.read(), val)
def test_no_auto_prune(self):
cache = Cache(self.__dir, 10, min_time=0, auto_prune=False)
val = b"0123456789"
cache.set("key1", val)
cache.set("key2", val)
cache.set("key3", val)
cache.set("key4", val)
self.assertEqual(cache.size, 40)
cache.prune()
self.assertEqual(cache.size, 10)
def test_missing_cache_file(self):
cache = Cache(self.__dir, 10, min_time=0)
val = b"0123456789"
os.remove(cache.set("key", val))
self.assertEqual(cache.size, 10)
self.assertFalse(cache.has("key"))
self.assertEqual(cache.size, 0)
os.remove(cache.set("key", val))
self.assertEqual(cache.size, 10)
with self.assertRaises(CacheMiss):
cache.get("key")
self.assertEqual(cache.size, 0)
def test_accessing_preserves(self):
cache = Cache(self.__dir, 25, min_time=0)
val = b"0123456789"
cache.set("key1", val)
cache.set("key2", val)
self.assertEqual(cache.size, 20)
cache.get_value("key1")
cache.set("key3", val)
self.assertEqual(cache.size, 20)
self.assertTrue(cache.has("key1"))
self.assertFalse(cache.has("key2"))
self.assertTrue(cache.has("key3"))
def test_min_time_clear(self):
cache = Cache(self.__dir, 40, min_time=1)
val = b"0123456789"
cache.set("key1", val)
cache.set("key2", val)
time.sleep(1)
cache.set("key3", val)
cache.set("key4", val)
self.assertEqual(cache.size, 40)
cache.clear()
self.assertEqual(cache.size, 20)
time.sleep(1)
cache.clear()
self.assertEqual(cache.size, 0)
def test_replace(self):
cache = Cache(self.__dir, 20)
val_small = b"0"
val_big = b"0123456789"
cache.set("key", val_small)
self.assertEqual(cache.size, 1)
cache.set("key", val_big)
self.assertEqual(cache.size, 10)
cache.set("key", val_small)
self.assertEqual(cache.size, 1)
def test_automatic_delete_oldest(self):
cache = Cache(self.__dir, 25, min_time=0)
val = b"0123456789"
cache.set("key1", val)
self.assertTrue(cache.has("key1"))
self.assertEqual(cache.size, 10)
cache.set("key2", val)
self.assertEqual(cache.size, 20)
self.assertTrue(cache.has("key1"))
self.assertTrue(cache.has("key2"))
cache.set("key3", val)
self.assertEqual(cache.size, 20)
self.assertFalse(cache.has("key1"))
self.assertTrue(cache.has("key2"))
self.assertTrue(cache.has("key3"))
def test_existing_files_order(self):
cache = Cache(self.__dir, 30)
val = b"0123456789"
cache.set("key1", val)
cache.set("key2", val)
cache.set("key3", val)
self.assertEqual(cache.size, 30)
# file mtime is accurate to the second
time.sleep(1)
cache.get_value("key1")
cache = Cache(self.__dir, 30, min_time=0)
self.assertEqual(cache.size, 30)
self.assertTrue(cache.has("key1"))
self.assertTrue(cache.has("key2"))
self.assertTrue(cache.has("key3"))
cache.set("key4", val)
self.assertEqual(cache.size, 30)
self.assertTrue(cache.has("key1"))
self.assertFalse(cache.has("key2"))
self.assertTrue(cache.has("key3"))
self.assertTrue(cache.has("key4"))