def METHOD_NAME(self):
    """ SiteConfig cache should expire after a certain period """
    # Cache should not be empty as of this moment
    self.assertIsNotNone(cache.get(SiteConfig.cache_key()))
    # Cache should now expire
    cache_time_expiration = localtime() + timedelta(days=1)
    with freeze_time(cache_time_expiration, tz_offset=0):
        self.assertIsNone(cache.get(SiteConfig.cache_key()))