Testing Spring MVC annotation mappings

Question

With Spring MVC, you can specify that a particular URL will handled by a particular method, and you can specify that particular parameters will map to particular arguments,

Answer 1

You could use AnnotationMethodHandlerAdapter and its handle method programmatically. This will resolve the method for the given request and execute it. Unfortunately this is a little indirect. Actually there is a private class called ServletHandlerMethodResolver in AMHA that is responsible for just resolving the method for a given request. I just filed a request for improvement on that topic, as I really would like to see this possible, too.

In the meantime you could use e.g. EasyMock to create a mock of your controller class, expect the given method to be invoked and hand that mock to handle.

Controller:

@Controller
public class MyController {

  @RequestMapping("/users")
  public void foo(HttpServletResponse response) {

    // your controller code
  }
}

Test:

public class RequestMappingTest {

  private MockHttpServletRequest request;
  private MockHttpServletResponse response;
  private MyController controller;
  private AnnotationMethodHandlerAdapter adapter;


  @Before
  public void setUp() {

    controller = EasyMock.createNiceMock(MyController.class);

    adapter = new AnnotationMethodHandlerAdapter();
    request = new MockHttpServletRequest();
    response = new MockHttpServletResponse();
  }


  @Test
  public void testname() throws Exception {

    request.setRequestURI("/users");

    controller.foo(response);
    EasyMock.expectLastCall().once();
    EasyMock.replay(controller);

    adapter.handle(request, response, controller);

    EasyMock.verify(controller);
  }
}

Regards, Ollie