业务代码

@Slf4j
@Service
@RequiredArgsConstructor
public class UserHomeServiceImpl implements UserHomeService {
@Override
      public UserInfoVO queryUserInfo(String userId, String type) throws Exception {
         if ("1".equals(type)) {
            if (StrUtil.isEmpty(userId)) {
               throw new ValidateException("关注用户id不能为空！");
            }
         }
}
}

单元测试

**
 * @Title：
 * @Description:
 * @Author: luohaihua
 * @Date: 2024/03/14 17:36
 * @Version: 1.0
 */
public class UserHomeServiceTest extends MockBaseTest {
    @InjectMocks
    public UserHomeServiceImpl UserHomeService;
    @Mock
    public UserHomeMapper userHomeMapper;

    @Before
    public void init() {
        MockitoAnnotations.initMocks(this);
    }

    @Test(expected= ValidateException.class)//断言异常
public void testQueryUserInfoWithValidateException() throws Exception{
    UserInfoVO userInfoVO = new UserInfoVO();
    when(userHomeMapper.queryUserInfo(anyString(),anyString(),anyString(),anyString())).thenReturn(userInfoVO);
    userHomeService.queryUserInfo("","1");
}

}