Java 依赖于另一个服务类的单元测试Spring引导服务类

我正在编写一个SpringBootREST服务，其中我试图对一个用@service注释的类进行单元测试。 此服务类在内部使用另一个服务类。 代码如下：

@Service
public class TieredClaimServiceImpl implements TieredClaimService {

//this is the second service used within 
// commented out setter injection and used constructor injection 
// @Autowired
private DiscountTierService discountTierService;

@Autowired
public TieredClaimServiceImpl(MerchRepository merchRepository,SalesRepository 
         salesRepository,DiscountTierService discountTierService) {
    this.merchRepository = merchRepository;
    this.salesRepository = salesRepository;
    this.discountTierService = discountTierService;
}

下面是我需要进行单元测试的类中的方法：

@Override
public List <TieredClaimDto>  calculateClaim(ClaimRequestDto claimRequestDto,String xAppCorelationId) throws SystemException {

    /** get the discount tier config data  - this is where we are using the other service **/
    List<DiscountTierDto> discountTierList = discountTierService.get();

或

DiscountTierService discountTierService = spy(new DiscountTierServiceImpl());

这两个都不起作用

---

虽然没有直接关系，但我有一个问题与整个解决方案有关

你说的是单元测试，但试图创建集成测试

@SpringBootTest
@ActiveProfules(value = "test")//or @TestPropertySource(s)
@RunWith(value = SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {SomeTestConfiguration.class})
public class SomeTestClass {

    @Autowired//or @Mock
    private MerchRepository merchRepository;

    @Autowired//or @Mock
    private SalesRepository salesRepository;

    @Mock
    private DiscountTierService discountTierService;

    private TieredClaimService service;

    @Before
    public void setup() {
        service = new TieredClaimServiceImpl(merchRepository, salesRepository, discountTierService);
    }

    @Test
    public void test() {
        //arrange
        var dto1 = new DiscountTierDto(...);
        var dto2 = new DiscountTierDto(...);
        var someList = List.of(dto1, dto2);
        when(discountTierService.get()).thenReturn(someList);
        //act
        service.calculateClaim(someClaimRequestDto, someAppCorrelationId);
        //assert
        Assert.assertThat(...);
    }
}

如果您真的想创建单元测试，您不需要大多数类注释，只需要@RunWith，并在必要时设置测试属性（当然，在这种情况下，您不能自动连接存储库，只需模拟）

---

但是如果您正在查看集成测试，您将调用调用服务的控制器方法，那么您需要使用独立控制器创建MockMvc对象。创建控制器对象只需设置此服务配置—在这种情况下，您可以控制所有必需的嵌套对象（服务、嵌套服务、存储库）。

您的单元测试看起来如何？您是如何创建

TieredClaimServiceImpl

——您是启动整个spring上下文以将它们创建为bean，还是使用

new

，在没有上下文的情况下手动创建它们？模拟是合适的工具。请解释“不起作用”。

@SpringBootTest
@ActiveProfules(value = "test")//or @TestPropertySource(s)
@RunWith(value = SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {SomeTestConfiguration.class})
public class SomeTestClass {

    @Autowired//or @Mock
    private MerchRepository merchRepository;

    @Autowired//or @Mock
    private SalesRepository salesRepository;

    @Mock
    private DiscountTierService discountTierService;

    private TieredClaimService service;

    @Before
    public void setup() {
        service = new TieredClaimServiceImpl(merchRepository, salesRepository, discountTierService);
    }

    @Test
    public void test() {
        //arrange
        var dto1 = new DiscountTierDto(...);
        var dto2 = new DiscountTierDto(...);
        var someList = List.of(dto1, dto2);
        when(discountTierService.get()).thenReturn(someList);
        //act
        service.calculateClaim(someClaimRequestDto, someAppCorrelationId);
        //assert
        Assert.assertThat(...);
    }
}