### Question:
ConsumerGroupTopicCheckServiceImpl implements RedundanceCheckService { @Override public String checkItem() { String field = "ConsumerGroupTopic下校验:" + ConsumerGroupTopicEntity.FdConsumerGroupName + "," + ConsumerGroupTopicEntity.FdTopicName; return field; }  @Override String checkItem(); @Override String checkResult(); String checkConsumerGroupTopic(Map<String,ConsumerGroupTopicEntity> consumerGroupTopicMap, Map<String,ConsumerGroupEntity> consumerGroupMap,
                                          Map<String, TopicEntity> topicMap,Map<String,QueueOffsetEntity> unQueueOffset);  }### Answer:
@Test public void checkItemTest() { assertEquals(true, consumerGroupTopicCheckServiceImpl.checkItem() != null); }