我试图实现Mockito来测试一个特定的方法，但是.thenReturn（...）似乎总是返回一个null对象，而不是我想要的：

• 切：*

public class TestClassFacade {

  // injected via Spring
  private InterfaceBP bpService;

  public void setBpService(InterfaceBP bpService) {

      this.bpService = bpService;
  }

  public TestVO getTestData(String testString) throws Exception {

    BPRequestVO bpRequestVO = new BPRequestVO();

    bpRequestVO.setGroupNumber(testString) ;
    bpRequestVO.setProductType("ALL") ;           
    bpRequestVO.setProfileType("Required - TEST") ;

    IBPServiceResponse serviceResponse = bpService.getProduct(bpRequestVO);  //PROBLEM

    if (serviceResponse.getMessage().equalsIgnoreCase("BOB")) {

        throw new Exception();

    } else {

        TestVO testVO = new TestVO();
    }

    return testVO;
  }

}

• Spring配置：*

<bean id="testClass" class="com.foo.TestClassFacade">

   <property name="bpService" ref="bpService" />

</bean>

<bean id="bpService" class="class.cloud.BPService" />

• Mockito测试方法：*

@RunWith(MockitoJUnitRunner.class)
public class BaseTest {

    @Mock BPService mockBPService;
    @InjectMocks TestClassFacade mockTestClassFacade;

    private String testString = null;
    private BPRequestVO someBPRequestVO = new BPRequestVO();
    private IBPServiceResponse invalidServiceResponse = new BPServiceResponse();

    @Test (expected = Exception.class)
    public void getBPData_bobStatusCode_shouldThrowException() throws Exception {

        invalidServiceResponse.setMessage("BOB");

        someBPRequestVO.setGroupNumber(null);
        someBPRequestVO.setProductType("ALL");
        someBPRequestVO.setProfileType("Required - TEST");

        System.out.println("1: " + someBPRequestVO.getGroupNumber());
        System.out.println("2: " + someBPRequestVO.getProductType());
        System.out.println("3: " + someBPRequestVO.getProfileType());
        System.out.println("4: " + someBPRequestVO.getEffectiveDate());

        when(mockBPService.getProduct(someBPRequestVO)).thenReturn(invalidServiceResponse);

        mockTestClassFacade.getTestData(testString);

        verify(mockBPService).getProduct(someBPRequestVO);
    }
}

• 系统输出：*

1: null
2: ALL
3: Required - TEST
4: null

这里发生的事情是，当我运行测试时，serviceResponse对象在上面的CUT中标记为//PROBLEM的行上为空。我希望用我的测试方法中的“invalidServiceResponse”对象填充该对象。从我的System.out.println的输出来看，我的bpRequestVO在内容上与我的someBPRequestVO匹配。
有人能告诉我我错过了什么吗？
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