How can I mock the parameters for a controller method using Spring MVC 3.1.x and spring-test-mvc?

Question

Using Spring MVC 3.1.x and spring-test-mvc, I was wondering if there is a way to mock the parameters of a function being mapped using @RequestMapping. Please see the code snippet below. I would like to know if I can use spring-test-mvc and mock out the response method below. I know that I can create an instance of the controller class, and then pass in mocked values of the request/response, but that doesn't test out the annotated portions of the code, which is why I would like to know if there is a way to do this using spring-test-mvc. If that is not possible, then is there another way that I can verify that the OutputStream is returning the correct results?

@RequestMapping(value="/", method = RequestMethod.GET)
public void getRequest(ServletRequest request, ServletResponse response){
    try{
        String destination = destinationRetrievalService.getDestination(request, response);
        InputStream input = httpServletRequestDelegationService.delegateGet(request, destination, response);
        response.setContentType("text/html");
        response.setCharacterEncoding("UTF-8");
        OutputStream output = response.getOutputStream();
        IOUtils.copy(input, output);
    }catch(IOException ioe){
        LOG.error("An exception has been thrown while trying to copy the stream back to the page.", ioe);           
    }
}

Thanks in advance!

Juan