在单元测试中模拟Spring Controller方法模型绑定

Question

In Spring Boot (Spring MVC) I am trying to test the binding of a form to a controller as per #4 in this question. I am having trouble replicating the magical post request -> model object binding that spring does to pass the model into the controller method. This is what I have so far:

WebRequest postRequest = new ServletWebRequest(new MockHttpServletRequest());
postRequest.setAttribute("itemModel.id", "23", RequestAttributes.SCOPE_REQUEST);
ItemModel itemModel = new ItemModel();
WebRequestDataBinder dataBinder = new WebRequestDataBinder(itemModel);
dataBinder.bind(postRequest);
assertThat(itemModel.getId(), equalTo(new Long(23)));

However, my assertion fails and itemModel.getId() returns null. How do I initialize the model like spring does when it calls the methods on my @Controller classes?

UPDATE

I've updated to the following, but it's still not working:

MockHttpServletRequest postRequest = new MockHttpServletRequest();
postRequest.addParameter("itemModel.id", "23");
WebRequest webPostRequest = new ServletWebRequest(postRequest);
ItemModel itemModel = new ItemModel();
WebRequestDataBinder dataBinder = new WebRequestDataBinder(itemModel);
dataBinder.bind(webPostRequest);
assertThat(itemModel.getId(), equalTo(new Long(23)));

Answer 1

What about use an Integration test using HttpClient?. Look this example if it's useful for you:

      @Test
     public void test() {
             HttpClient loggedClient = new HttpClient();
             PostMethod loginPostMethod = new PostMethod(loginURL);
             loginPostMethod.addParameter("j_username", login);
             loginPostMethod.addParameter("j_password", password);
             loginPostMethod.addParameter("remember", "1");
             loginPostMethod.addParameter("clientType", clientType);
             loginPostMethod.addParameter("clientVersion", clientVersion);
              httpClient.executeMethod(postMethod);


             String USERS_URL = HTTP_SERVER_DOMAIN + "/service";
             PutMethod put = new PutMethod(USERS_URL);
             put.addRequestHeader("Content-Type", "application/json");
             put.setRequestBody("your_body");

             try {
                 loggedClient.executeMethod(put);
             } catch (HttpException e) {
                 e.printStackTrace();
             } catch (IOException e) {
                 e.printStackTrace();
             }

             assertEquals(HttpStatus.SC_OK, put.getStatusCode());

}

Answer 2

我认为应该只是“ id”，而不是“ itemModel.id”