### Question:
ConsumerGroupCheckServiceImpl implements RedundanceCheckService { @Override public String checkItem() { String field = "ConsumerGroup下校验:" + ConsumerGroupEntity.FdName + "," + ConsumerGroupEntity.FdOriginName + "," + ConsumerGroupEntity.FdIpWhiteList + "," + ConsumerGroupEntity.FdIpBlackList + "," + ConsumerGroupEntity.FdTopicNames; return field; }  @Override String checkItem(); @Override String checkResult(); String checkConsumerGroup(Map<String, ConsumerGroupEntity> consumerGroupMap, Map<String, ConsumerGroupTopicEntity> consumerGroupTopicMap,
                                     Map<String,TopicEntity> topicMap);  }### Answer:
@Test public void checkItemTest() { assertEquals(true, consumerGroupCheckServiceImpl.checkItem()!=null); }