集成测试和spring应用程序事件

时间:2017-07-16 12:32:55

标签: spring junit mockito integration-testing

我有一个弹簧控制器,可以触发ApplicationEvent

@RestController
public class VehicleController {

@Autowired
private VehicleService service;

@Autowired
private ApplicationEventPublisher eventPublisher;

@RequestMapping(value = "/public/rest/vehicle/add", method = RequestMethod.POST)
public void addVehicle(@RequestBody @Valid Vehicle vehicle){
    service.add(vehicle);
    eventPublisher.publishEvent(new VehicleAddedEvent(vehicle));
    }
}

我对控制器进行了集成测试,例如

    @RunWith(SpringRunner.class)
    @WebMvcTest(controllers = VehicleController.class,includeFilters = @ComponentScan.Filter(classes = EnableWebSecurity.class))
    @Import(WebSecurityConfig.class)

public class VehicleControllerTest {
@Autowired
private MockMvc mockMvc;

@MockBean
private VehicleService vehicleService;

@Test
public void addVehicle() throws Exception {
    Vehicle vehicle=new Vehicle();
    vehicle.setMake("ABC");
    ObjectMapper mapper=new ObjectMapper();
    String s = mapper.writeValueAsString(vehicle);

    given(vehicleService.add(vehicle)).willReturn(1);

    mockMvc.perform(post("/public/rest/vehicle/add").contentType(
            MediaType.APPLICATION_JSON).content(s))
            .andExpect(status().isOk());
   }
}

现在,如果删除事件发布行,则测试成功。但是,对于该事件,它会出错。

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalArgumentException: null source

我尝试了很多不同的东西,以避免或跳过测试中的界限,但没有任何帮助。你能否告诉我测试这些代码的正确方法是什么?提前致谢

1 个答案:

答案 0 :(得分:7)

我已在本地复制此问题,此例外......

  

org.springframework.web.util.NestedServletException:请求处理失败;嵌套异常是java.lang.IllegalArgumentException:null source

... 强烈表示VehicleAddedEvent的构造函数如下所示:

public VehicleAddedEvent(Vehicle vehicle) {
    super(null);
}

如果你向下看堆栈跟踪,你可能会看到类似的东西:

Caused by: java.lang.IllegalArgumentException: null source
    at java.util.EventObject.<init>(EventObject.java:56)
    at org.springframework.context.ApplicationEvent.<init>(ApplicationEvent.java:42)

所以,回答你的问题;问题不在于您的测试,而是在VehicleAddedEvent构造函数中进行超级调用,如果您更新那样调用super(vehicle)而不是super(null),那么事件发布将不会抛出一个例外。

这将允许您的测试完成,尽管您的测试中没有任何内容断言或验证此事件已发布,因此您可能需要考虑添加一些内容。您可能已经实施了ApplicationListener<Vehicle>(如果不是,那么我不确定发布&#39;车辆事件的好处是什么),这样您就可以@Autowire进入VehicleControllerTest并验证车辆事件是否像这样发布:

// provide some public accessor which allows a caller to ask your custom
// application listener whether it has received a specific event
Assert.assertTrue(applicationListener.received(vehicle));