def test_save_calendar_id_already_exists(self):
cal = Calendar(CAL_TITLE, CAL_URL, self.__last_update, CAL_TZ)
mgr = TestCache(db=TEST_DB_FILE)
mgr.save(cal)
cal = Calendar("", CAL_URL, "", CAL_TZ)
self.assertRaises(Exception, mgr.save, cal)
mgr.close()
