SqlSession sqlSession = MybatisHelper.getSqlSession();
try {
    UserInfoMapper mapper = sqlSession.getMapper(UserInfoMapper.class);
    UserInfo userInfo = new UserInfo();
    userInfo.setUsername("abel533");
    userInfo.setPassword("123456");
    userInfo.setUsertype("2");
    userInfo.setEmail("abel533@gmail.com");
    //新增一条数据
    //怎么打印mapper.insert(userInfo)的sql
    Assert.assertEquals(1, mapper.insert(userInfo));
    //ID回写,不为空
    Assert.assertNotNull(userInfo.getId());
    //6是当前的ID
    Assert.assertEquals(6, (int)userInfo.getId());
    //通过主键删除新增的数据
    //怎么打印mapper.deleteByPrimaryKey(userInfo)的sql
    Assert.assertEquals(1,mapper.deleteByPrimaryKey(userInfo));
} finally {
    sqlSession.close();
}