def METHOD_NAME(self, logger):
    KolibriCoreConfig.check_redis_settings()
    self.helper.get_maxmemory.assert_called_once()
    self.helper.set_maxmemory.assert_not_called()
    self.helper.get_maxmemory_policy.assert_called_once()
    self.helper.set_maxmemory_policy.assert_not_called()
    logger.assert_not_called()