在testNG模拟中引用不同的参数时

Question

我在ReferenceConceptServiceImpl类中有一个测试类，我在这里使用了模拟。

@Resource
  private ReferenceConceptDTOMapper referenceConceptDtoMapper;

@Resource
  private TerminologyDefinitionDTOMapper definitionDTOMapper;

    public ReferenceConceptDTO getConceptByTerminologyAndId(final TerminologyDefinitionDTO terminology,
                                                              final String conceptId)
      {
        TerminologyDefinition terminologyDefinition = definitionDTOMapper.load(terminology);
        final ReferenceConcept findRefernaceConceptsByTermAndId = getDAO()
            .findReferenceConceptByTermAndId(terminologyDefinition, conceptId);

        return referenceConceptDtoMapper.convert(findRefernaceConceptsByTermAndId);
      }

我们班的构造函数是：

public ReferenceConceptServiceImpl(final se.cambio.concept.terminology.dto.spi.ReferenceConceptEntityDTOMapper<D> mapper,
                                     final se.cambio.concept.terminology.dto.spi.ReferenceConceptMutableEntityDTOMapper<MD> mutableMapper,
                                     final se.cambio.concept.terminology.persistence.ReferenceConceptDAO dao)
  {
    super(mapper, mutableMapper, dao);
  }

我还添加了包含可测试类bean及其依赖项的xml文件。此外，我还向测试类添加了所需的依赖项，并尝试在method.It上进行测试，如下所示：

@Test
  public void testGetConceptByTerminologyAndId()
  {
    String conceptId = "test_Concept";
    when(definitionDTOMapper.load(getTerminologyDefinitionDTO())).thenReturn(getTerminologyDefinition());
    when(referenceConceptServiceImpl.getDAO()).thenReturn(mockReferenceConceptDAO);
    when(mockReferenceConceptDAO.findReferenceConceptByTermAndId(getTerminologyDefinition(), conceptId))
        .thenReturn(getReferenceConcept());
    when(referenceConceptDtoMapper.convert(getReferenceConcept())).thenReturn(getReferenceConceptDTO());
    ReferenceConceptDTO actualOutput = referenceConceptServiceImpl .getConceptByTerminologyAndId(getTerminologyDefinitionDTO(), conceptId);
    assertEquals(actualOutput, getReferenceConceptDTO());
  }

这里，所有的getter方法都有数据。我的问题是，在调用getDAO()方法之后，它返回DAO类型的对象。因此，我试图通过获取findReferenceConceptByTermAndId()的输出来调用getDAO()。

问题就在那条线上。

when(referenceConceptServiceImpl.getDAO()).thenReturn(mockReferenceConceptDAO);

错误是：

org.mockito.exceptions.misusing.MissingMethodInvocationException: 
when() requires an argument which has to be 'a method call on a mock'.
For example:
    when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:
1. you stub either of: final/private/equals()/hashCode() methods.
   Those methods *cannot* be stubbed/verified.
2. inside when() you don't call method on mock but on some other object.
3. the parent of the mocked class is not public.
   It is a limitation of the mock engine.

有人能解决我的问题吗？

Answer 1

我自己找到了一个解决方案，我把它发到这里；

我在这里所做的是添加以下代码：

when(referenceConceptServiceImpl.getDAO()findReferenceConceptByTermAndId(getTerminologyDefinition(), conceptId)).thenReturn(getReferenceConcept());

按以下两行分列：

 when(referenceConceptServiceImpl.getDAO()).thenReturn(mockReferenceConceptDAO);
    when(mockReferenceConceptDAO.findReferenceConceptByTermAndId(getTerminologyDefinition(), conceptId))
        .thenReturn(getReferenceConcept());