def test_empty_cache(self):
cal = Calendar(CAL_TITLE, CAL_URL, self.__last_update, CAL_TZ)
mgr = TestCache(db=TEST_DB_FILE)
mgr.save(cal)
self.assertEqual(1, len(mgr.load_all()))
mgr.empty()
self.assertEqual(0, len(mgr.load_all()))
