Micronaut：执行 Mockito 测试时不调用异常处理程序

Question

当我创建一个通过调用 API 代码抛出异常的情况时，当时 ExceptionHandler 被按预期调用。但是当我尝试通过单元测试创建相同的案例时，那时 ExceptionHandler 没有被调用。我的类如下：

Controller.java

@Post("/XXX")
public ResponseEntity<List<CategoryTopicBean>> listCategoryTopics(@Body CategoryIdsRequestBean categoryIdsRequestBean) {
    if (categoryIdsRequestBean.getCategoryIds().size() > MAX_ALLOWED_CATEGORY_SELECTION) {
        throw new CustomException(SystemConstants.ResponseCode.ERROR, SystemConstants.ResponseMessage.OVERFLOW_MAX_CATEGORIES);
    }
    ...

CustomExceptionHandler.java:

@Produces
@Singleton
@Requires(classes = {CustomException.class, ExceptionHandler.class})
public class CustomExceptionHandler implements ExceptionHandler<CustomException, HttpResponse> {

    @Override
    public HttpResponse handle(HttpRequest request, CustomException exception) {
        return HttpResponse.ok(new ResponseEntity<>(exception.responseCode, exception.getMessage()));
    }
}

XXXShould.java

@Test
public void should_list_category_topics() {
    CategoryIdsRequestBean categoryIdsBean = new CategoryIdsRequestBean();
    IdBean idBean = new IdBean();
    idBean.setId(ID_1);
    categoryIdsBean.setCategoryIds(Arrays.asList(idBean));

    ResponseEntity<List<CategoryTopicBean>> responseEntity = topicController.listCategoryTopics(categoryIdsBean);
    assertThat(SystemConstants.ResponseCode.SUCCESS).isEqualTo(responseEntity.getResponseCode());
    assertThat(1).isEqualTo(responseEntity.getData().size());

    categoryIdsBean = new CategoryIdsRequestBean();
    categoryIdsBean.setCategoryIds(Arrays.asList(idBean, idBean, idBean, idBean, idBean, idBean));
    responseEntity = topicController.listCategoryTopics(categoryIdsBean);
}

任何人都可以调查一下并帮助我吗？

Answer 1

这里的问题是，您是通过直接调用控制器方法来测试控制器 topicController.listCategoryTopics(categoryIdsBean).

这不是测试控制器功能的好方法。你应该做的是使用 MicronautTest。 MicronautTest 将启动一个嵌入式服务器。现在您可以使用 HTTP 客户端访问端点并检索结果。

您的代码需要更改为以下几行。

@MicronautTest
class HelloWorldTest {

    @Inject
    @Client("/")
    RxHttpClient client;

    @Test
    public void should_list_category_topics() {
        // Test Data
        CategoryIdsRequestBean categoryIdsBean = new CategoryIdsRequestBean();
        IdBean idBean = new IdBean();
        idBean.setId(ID_1);
        categoryIdsBean.setCategoryIds(Arrays.asList(idBean));

        HttpRequest<String> request = HttpRequest.POST("/XXX", categoryIdsBean);
        ResponseEntity<List<CategoryTopicBean>> retrieve = client.toBlocking().retrieve(request, ResponseEntity.class);

        categoryIdsBean = new CategoryIdsRequestBean();
        categoryIdsBean.setCategoryIds(Arrays.asList(idBean, idBean, idBean, idBean, idBean, idBean));
        responseEntity = topicController.listCategoryTopics(categoryIdsBean);
    }
}

对于exception案例场景，作为异常处理程序returnsResponseEntity<String>，您需要对上述代码做一些小改动。

ResponseEntity<String> retrieve = client.toBlocking()
                               .retrieve(request, ResponseEntity.class);

如果您的控制器调用任何其他服务，请不要忘记模拟该行为。

Micronaut：执行 Mockito 测试时不调用异常处理程序

Micronaut: Exception Handler is not invoked while executing Mockito tests

java

unit-testing

exception

mockito

micronaut