How to write the junit test code for the following controller code

//Controller Code

package com.payoda.springs;

import java.util.ArrayList;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.validation.Errors;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Controller
public class StartController {

    @RequestMapping(value = "/Volume", method = RequestMethod.GET)
    public ModelAndView Volume() {
        /*
         * List<String> country = new ArrayList<String>();
         * country.add("Number 1"); country.add("Number 2");
         * country.add("Number 3"); country.add("Number 4");
         * country.add("Number 5"); model.addAttribute("country", country);
         */
        System.out.println("country");
        return new ModelAndView("Volumetest", "command", new test());
    }

    @RequestMapping(value = "/sendto", method = RequestMethod.POST)
    public String addStudent(@ModelAttribute("command") test test,
            ModelMap model, BindingResult result) {

        Validatorset Valid = new Validatorset();
        Valid.validate(test, result);

        if (result.hasErrors())
            return "Volumetest";
        else
            model.addAttribute("name", test.getName());
        return "Volumereturn";

    }
}


//  Mock test code

package com.payoda.test;
import junit.framework.Assert;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;

import com.payoda.springs.StartController;
/*
 * 
 * Junit tests for Spring(Web level)
 * 
 */
@RunWith(SpringJUnit4ClassRunner.class)
//@ContextConfiguration(locations={"file:{/WEB-INF/newprog-servlet.xml},{/WEB-INF/application-context.xml}" })
@ContextConfiguration(locations={ "file:WEB-INF/newprog-servlet.xml"})
public class MockTest {

    private MockHttpServletRequest request;
    private MockHttpServletResponse response;
    private AnnotationMethodHandlerAdapter handlerAdapter;

    @Before
    public void setUp() throws Exception {
        this.request = new MockHttpServletRequest();
        this.response = new MockHttpServletResponse();
        handlerAdapter = new AnnotationMethodHandlerAdapter();
    }

    @Test
    public void testNewForm() throws Exception {
        request.setMethod("GET");
        request.setRequestURI("/Volume");
        final ModelAndView mav = handlerAdapter.handle(request, response,
                new StartController());
        Assert.assertEquals("user", mav.getViewName());
    }
}

//Could any1 pls explain the problem in my 'mock test code' becoz am getting the java.illegal.state: Failed to load application context...

//Awaiting for ur reply... urgent ...