java – 使用MockServletContext进行单元测试

我已经使用Gradle设置了spring boot应用程序.现在我明白@EnableAutoConnfiguration根据类路径中的依赖关系配置应用程序.我很高兴避免所有的管道,但事情开始发生,我希望不会.

这是我的依赖项：

dependencies {
        compile('org.springframework.boot:spring-boot-starter-web:1.2.3.RELEASE')
        compile 'org.springframework.hateoas:spring-hateoas:0.17.0.RELEASE'
        compile 'org.springframework.plugin:spring-plugin-core:1.2.0.RELEASE'
        compile 'org.springframework.boot:spring-boot-starter-data-jpa'

        compile 'com.google.guava:guava:18.0'
        compile 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310'
        compile 'commons-beanutils:commons-beanutils:1.9.2'
        runtime 'org.hsqldb:hsqldb:2.3.2'

        testCompile 'org.springframework.boot:spring-boot-starter-test'
        testCompile 'com.jayway.jsonpath:json-path:2.0.0'
    }

我的应用类：

@ComponentScan("org.home.project")
@SpringBootApplication
//@EnableHypermediaSupport(type = EnableHypermediaSupport.HypermediaType.HAL)
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

UserController的一个片段：

@RequestMapping(method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
public HttpEntity<ResourceSupport> create(@Valid @RequestBody UserCreateRequest ucr, BindingResult bindingResult) {
    if (bindingResult.hasErrors()) throw new InvalidRequestException("Bad Request", bindingResult);

    Long userId = userService.create(ucr);

    ResourceSupport resource = new ResourceSupport();
    resource.add(linkTo(UserEndpoint.class).withSelfRel());
    resource.add(linkTo(methodOn(UserEndpoint.class).update(userId, null, null)).withRel(VIEW_USER));
    resource.add(linkTo(methodOn(UserEndpoint.class).delete(userId)).withRel(DELETE_USER));

    return new ResponseEntity(resource, HttpStatus.CREATED);
}

UserController.java有两个注释：

@RestController
@RequestMapping(value = "/users", produces = MediaType.APPLICATION_JSON_VALUE)

首先注意注释掉@EnableHyperdiaSupport注释 – 尽管生成了媒体类型并在请求中设置了媒体类型,但ResourceSupport实例中的链接仍然被序列化为hal json格式.当依赖项中引入’org.springframework.plugin：spring-plugin-core：1.2.0.RELEASE’时会自动发生这种情况.如何明确配置它？

另一个问题是单元测试.

这通过：

@RunWith(SpringJUnit4ClassRunner.class)
    @SpringApplicationConfiguration(classes = MockServletContext.class)
    @WebAppConfiguration
    public class UserControllerTest {
    ...ommited for brevity...

@InjectMocks
    private UserController testObject;

    @Before
    public void setUp() throws Exception {
        initMocks(this);
        mockMvc = standaloneSetup(testObject).build();
    }

    @Test
        public void testUserCreatedLinks() throws Exception {
            mockMvc.perform(post("/users").contentType(MediaType.APPLICATION_JSON).content(data))
            .andExpect(status().isCreated())
            .andExpect(content().contentType(MediaType.APPLICATION_JSON)).andExpect(jsonPath("$.links.[*].rel", hasItem("self")));
        }
    ...ommited fro brevity...
    }

post请求在测试中返回标准JSON响应 – 而不是HAL JSON.有没有办法重新配置这个,以便单元测试@RestController与MockServletContext将产生HAL JSON或回到问题1 – 如何明确配置响应格式,以便杰克逊序列化器不会产生hal json？

解决方法:

您正在使用Spring MVC Test的standaloneSetup运行测试,该独立设置使用最少的配置来启动和运行控制器.该配置与运行整个应用程序时将使用的配置不同.

如果要使用相同的配置,可以使用webAppContextSetup：

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Application.class)
@WebAppConfiguration
public class SomeTests {

    @Autowired
    private WebApplicationContext context;

    private MockMvc mockMvc;

    @Before
    public void setUp() {
        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.context).build();
    }
}

或者,您可以在独立设置中复制Spring HATEOAS的配置.请注意,这会导致测试配置偏离应用程序配置的风险.你可以像这样创建MockMvc实例：

TypeConstrainedMappingJackson2HttpMessageConverter messageConverter = 
            new TypeConstrainedMappingJackson2HttpMessageConverter(ResourceSupport.class);
messageConverter.setSupportedMediaTypes(Arrays.asList(MediaTypes.HAL_JSON));

ObjectMapper objectMapper = messageConverter.getObjectMapper();
objectMapper.registerModule(new Jackson2HalModule());
objectMapper.setHandlerInstantiator(
        new Jackson2HalModule.HalHandlerInstantiator(new DefaultRelProvider(), null));

MockMvc mockMvc = MockMvcBuilders.standaloneSetup(testObject)
        .setMessageConverters(messageConverter).build();

标签：java,spring,spring-boot,spring-hateoas
来源： https://codeday.me/bug/20190824/1710693.html