java - Spring MVC 的 junit 测试用例

Question

我们正在使用 spring mvc 框架开发一个应用程序。我已经给出了下面的所有类，请建议如何为下面的场景编写 junit 测试用例。

我想为 validateAccountInformation(requestDTO) 方法编写一个 junit 测试用例，该方法在 LPAValidator.java 类的 validateAccount(..) 方法中调用。下面是我的 junit 测试用例，后面是 java 类。实际调用来自 LPAController.java，如下面的代码所示。

LPAControllerTest.java

       @Test(groups = "manual")
        public void submitRequestForLPAAccountTest()
        {
       // businessCalendar.nextBusinessDay(
      //                LocalDateHelper.today(), LPAConstants.TWENTY_BUSSINESS_DAYS)
     //i want to write the test case for the above commented logic, 
     //if business days is not equal to twenty days, test should fail. 
        }

LPAController.java

    @RequestMapping(value = "/lpa/{accNumber}/spread, method = RequestMethod.GET)
     public @ResponseBody LPAResponseDTO accountSearch(@RequestBody final LPARequestDTO clientrequestBody,
                                        @PathVariable final String accNumber, final HttpServletResponse response)
    {
        //some logic goes here

final LPAAccountResponse domainResponse = service.submitRequestForLPAAccount(requestBody);

    }

LPAServiceImpl.java

@PermitAll
@NonTransactional
public LPAResponse submitRequestForLPAAccount(final LPARequest requestDTO)
{
    return lpaRepository.submitRequestForLPAAccount(requestDTO));
}

LPARepository.java

    @PermitAll
    @NonTransactional
    public LPAResponse submitRequestForLPAAccount(final LPARequest requestDTO)
    {
    //some logic
    lpaValidator.validateAccount(requestDTO);

    //some logic

    }

LPAValidator.java——用于验证的 java 类

@component
class LPAValidator{
    @Inject
    private BusinessCalendar businessCalendar;

            void validateAccount(final LPARequest requestDTO) throws Exception {
            try {
                validateAccountInformation(requestDTO);
                } catch(Exception e){
                }
        }

            private void validateAccountInformation(final LPARequest requestDTO) throws Exception{
                final accDate lpaAccDate = requestDTO.getLPADate();
                final LocalDate twentyBussinessDays = businessCalendar.nextBusinessDay(
                    LocalDateHelper.today(), LPAConstants.TWENTY_BUSSINESS_DAYS); //i want to write 
    //test case for this line of code, if business days given is more than twenty test should fail.
                //some logic here
        }

请建议需要在 LPAControllerTest.java 中添加哪些内容来测试上面讨论的 nextBusinessDay(..)。

Answer 1

您正在尝试编写一个集成测试，在该测试中调用 Controller ，然后调用所有子类，直到触发 validator 。这不是传统的“单元测试”。

传统的单元测试只会直接测试 validator ，仅此而已。

尽管如此，在编写集成测试时，spring documentation to the rescue
简而言之，它将要求您使用所有必要的脚手架创建一个应用程序上下文，然后使用 mockMvc 调用对创建的应用程序执行 GET。

如果您想测试 validator ，请使用简单的模拟框架:请参阅[http://mockito.org]给你这样的东西:

@Mock BusinessCalendar businessCalendarMock;
@Mock LPARequest mockRequest;
@Mock accDate mockDate;
@Mock LocalDate mockLocalDate;
@InjectMocks LPAValidator lpaValidator = new LPAValidator();
@Test public void testValidateAccount() {
    when(mockRequest.getLPAdate()).thenReturn(mockDate);
    when(businessCalendar.nextBusinessDay(LocalDateHelper.today(),LPAConstants.TWENTY_BUSSINESS_DAYS).thenReturn(mockLocalDate);
    // continue your test from here
   lpaValidator.validateAccount( mockRequest);
   verify(businessCalendar).nextBusinessDay(LocalDateHelper.today(),LPAConstants.TWENTY_BUSSINESS_DAYS);
    // although if the use of mockLocalDate is integral to your code, it'll probably show before and no verify is necessary;