Spring Junit测试类中的多种配置

Question

We are using SpringJUnit4ClassRunner with ContextConfiguration annotation, for example, testing a front end controller:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
public class FrontEndControllerTest {

    private MockMvc mockMvc;

    @Autowired
    private FrontEndController frontEndController;

    @Before
    public void init() {
        mockMvc = MockMvcBuilders.standaloneSetup(frontEndController).build();
    }

    @Test
    public void shouldDirectToSomeView() throws Exception {
        mockMvc.perform(get("/"))
                .andExpect(status().isOk())
                .andExpect(view().name("someView"));
    }

    @Configuration
    public static class FrontEndControllerTestConfiguration {

        @Bean
        public FrontEndController defaultController() {
            return // init controller
        }

        @Bean
        public SomeConfigObject config() {
            return // some config
        }
    }
}

Now, I want to add another test with a different configuration into the same the class. For example, inject a mock with a failing database operation, or or or.

Is it possible add another test like this (I know, will not compile):

@Test
@ContextConfiguration(/* My other configuration */)
public void shouldDoSomeOtherStuff_InvalidConfiguration() {
      // ...
} 

In Spring 4 it is not possible because ContextConfiguration can only be declared as annotation in front of the class. Is there something like this in Spring 4? Do you recommend to try another approach?

Answer 1

I found a solution: The problem is that I want to get new mocks for every test and I want to modify them before I perform mockMvc.perform(get("/")) . Therefore you can use @DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD) annotation. Here is my code:

@ContextConfiguration
@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
@RunWith(SpringJUnit4ClassRunner.class)
public class FrontEndControllerTest {

    private MockMvc mockMvc;

    @Autowired
    private FrontEndController frontEndController;

    @Autowired
    private SomeConfigObject config;

    @Before
    public void init() {
        mockMvc = MockMvcBuilders.standaloneSetup(frontEndController).build();
    }

    @Test
    public void shouldDirectToSomeView() throws Exception {
        // mock valid behaviour of config

        mockMvc.perform(get("/"))
                .andExpect(status().isOk())
                .andExpect(view().name("someView"));
    }

    @Test
    public void shouldNotDirectToSomeView_InvalidConfiguration() throws Exception {
        // mock invalid behaviour of config

        mockMvc.perform(get("/"))
                .andExpect(status().is5xxServerError())
    }

    @Configuration
    public static class FrontEndControllerTestConfiguration {

        @Bean
        public FrontEndController defaultController() {
            return // init controller
        }

        @Bean
        public SomeConfigObject config() {
            return mock(SomeConfigObject.class);
        }
    }
}