Springmvc单元测试控制器使用mockito注入道对象

Question

当使用mockito单元测试Spring mvc控制器时，如何注入道层对象。当使用SpringJUnit4ClassRunner类时，它总是使用@Spy注释给空指针异常。

示例代码：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:**/evivecare-application-context-test.xml" })
@WithMockUser(username = "admin", roles={"ADMIN"})
@TestExecutionListeners({DependencyInjectionTestExecutionListener.class})
public class ControllerTest {

    private MockMvc mockMvc;
     @Mock
     private SessionFactory sessionFactory;
     @Mock
     private Session session;
    @InjectMocks
    private FilterController filterController = new FilterController();
    @Spy
    private FilterService filterService= new FilterServiceImpl();
    @Autowired
    private FilterDAO filterDAO;
    @Mock
    private OperatorService userService;
    @Mock
    private EviveSpeechFilterService eviveSpeechFilterService;
    private TestContextManager testContextManager;



    @Before
    public void setup() throws Exception {
        // Process mock annotations
        MockitoAnnotations.initMocks(this);

        // Setup Spring test in standalone mode
        this.mockMvc = MockMvcBuilders.standaloneSetup(filterController).build();
        testContextManager = new TestContextManager(getClass());
        testContextManager.prepareTestInstance(this);

        filterDAO= new FilterDAOImpl(sessionFactory);
        Mockito.doReturn(session).when(sessionFactory).getCurrentSession();
    }

@Test
    public void testController200() throws Exception{
        Mockito.when(filterService.renameList("123","sdfgh")).thenReturn(false);
        Mockito.when(filterDAO.renameList("123","sdfgh")).thenReturn(false);
        this.mockMvc.perform(org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post("/renameList")
                .sessionAttr("filterService", filterService)
                .sessionAttr("filterDAO", filterDAO)
                .param("listId", "1234567")
                .param("alternateName", "LIst Name"))
        .andExpect(org.springframework.test.web.servlet.result.MockMvcResultMatchers.status().isOk());
    }
}

在这个测试用例中，filterService依次调用filterDAO，它总是返回空指针异常。那么，我能做些什么来解决这个问题呢？




Answer 1

FilterService不是托管bean，您可能需要在构造函数中注入道，因为它不会在FilterService中自动运行。

请参考SO上的这个问题以了解更多信息：支持非spring实例化的类中的自动连接（3）