Spring MockMvc 返回 200 而不是 201。如何调试？

Question

I am attempting to test a controller with several HTTP verbs using Spring MockMvc. Currently GET and DELETE work as expected, but PUT and PATCH are not returning 201, when they should be.

The PATCH controller is setup as follows:

@CustomRequestMapping(method = PATCH, value = "/{api-root}")
public ResponseEntity patch(@PathVariable(value = "api-root") String id, @RequestBody ApiRoot apiRoot) {
     return apiRootService.softUpdate(id, apiRoot);
}

The @CustomRequestMapping... annotation just sets up consumes and produces to be a particular content type.

the softUpdate() method referenced above performs the following:

public ResponseEntity softUpdate(String id, ApiRoot apiRoot) {
    if (apiRoot.getId() == null) {
        apiRoot.setId(id);
    }

    ApiRootDocument updated = softUpdate(apiRoot);
    return ResponseEntity
            .created(EscapeUtil.buildUrl(applicationProperties.getHostname(), applicationProperties.getPort(), id))
            .body(updated);
}

This is working and tested outside of the MockMvc unit tests. It correctly returns a 201 Created to Postman, with the body being the new JSON Object that was created as a result of the PATCH .

My test is setup as:

public void testPatchApiRootEndpoint() throws Exception {
    String testTitle = "New Test Title";

    // Mock the service call for softUpdate() to return 'created' in the same way that the method does
    when(apiRootService.softUpdate(TestData.apiRoot1.getId(), TestData.apiRoot1.withTitle(testTitle)))
            .thenReturn(ResponseEntity
                .created(URI.create(EscapeUtil.buildUrlString("localhost", "8001", TestData.apiRoot1.getId())))
                .body((ApiRootDocument) TestData.apiRoot1.withTitle(testTitle)));

    // Perform a patch update using a new title provided as key-value
    JsonObject titleJson = new JsonObject();
    titleJson.addProperty("title", testTitle);
    mockMvc.perform(patch("/{api-root}", TestData.apiRoot1.getId())
                .contentType(Constants.TAXII2_CONTENT_TYPE)
                .content(titleJson.toString()))
            .andExpect(status().isCreated());
}

Which results in a 200 being returned, instead of a 201 . I'm really confused, and it has been difficult to research. Most similar issues are finding 4XX response codes when they expect 2XX, and the solution is typically something to do with the setup of the request.

The only interesting logs I can seem to find are:

09:48:25.064 [main] DEBUG org.springframework.test.web.servlet.TestDispatcherServlet - Servlet '' configured successfully
09:48:25.208 [main] DEBUG org.springframework.test.web.servlet.TestDispatcherServlet - DispatcherServlet with name '' processing PATCH request for [/api-root-1]
09:48:25.211 [main] DEBUG org.springframework.test.web.servlet.setup.StandaloneMockMvcBuilder$StaticRequestMappingHandlerMapping - Looking up handler method for path /api-root-1
09:48:25.219 [main] DEBUG org.springframework.test.web.servlet.setup.StandaloneMockMvcBuilder$StaticRequestMappingHandlerMapping - Returning handler method [public org.springframework.http.ResponseEntity xor.bcmc.flarecloud.apiroot.controller.ApiRootController.patch(java.lang.String,xor.bcmc.taxii2.resources.ApiRoot)]
09:48:25.388 [main] DEBUG org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor - Read [class xor.bcmc.taxii2.resources.ApiRoot] as "application/vnd.oasis.taxii+json;version=2.0" with [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter@20921b9b]
09:48:25.428 [main] DEBUG org.springframework.test.web.servlet.TestDispatcherServlet - Null ModelAndView returned to DispatcherServlet with name '': assuming HandlerAdapter completed request handling
09:48:25.428 [main] DEBUG org.springframework.test.web.servlet.TestDispatcherServlet - Successfully completed request

Answer 1

Looks like your mocked call not worked. You can easily check if you replace values to the any():

when(apiRootService.softUpdate(Mockito.any(), Mockito.any())
.thenReturn(ResponseEntity
                .created(URI.create(EscapeUtil.buildUrlString("localhost", "8001", TestData.apiRoot1.getId())))
                .body((ApiRootDocument) TestData.apiRoot1.withTitle(testTitle)));

I just checked if you use wrong mock from controller is returned 200 status, but if mock is correct i got 201.