junit 单元测试事务会自动回滚。
通过@Rollback(true)注解来实现，默认是true，事务会回滚，可以不写。false时事务不会回滚，数据会写到数据库中。

package com.xiaolyuh.service;
 
import java.util.Date;
 
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.transaction.annotation.Transactional;
 
import com.alibaba.fastjson.JSON;
import com.xiaolyuh.entity.RewardCouponDetail;
import com.xiaolyuh.mapper.RewardCouponDetailMapper;
 
@RunWith(SpringRunner.class)
@SpringBootTest
public class RewardCouponDetailServiceTest{
 
    private static final Logger logger = LoggerFactory.getLogger(RewardCouponDetailServiceTest.class);
    
    @Autowired
    private RewardCouponDetailMapper rewardCouponDetailMapper;
    
    
    @Test
    @Transactional
    @Rollback(true)// 事务自动回滚，默认是true。可以不写
    public void TestCustomer(){
        RewardCouponDetail rewardCouponDetail = new RewardCouponDetail();
        rewardCouponDetail.setRewardInfoId(1L);
        rewardCouponDetail.setCouponId("1");
        rewardCouponDetail.setCouponDetailId(1L);
        rewardCouponDetail.setCreateTime(new Date());
        rewardCouponDetailMapper.insert(rewardCouponDetail);
        logger.info(JSON.toJSONString(rewardCouponDetail));
        Assert.assertNotNull(rewardCouponDetail.getId());
    }
    
}