Unit testing a java servlet

public class OrdersPageTest {
    private static final String WEBSITE_URL = "http://localhost:8080/demo1";

    @Before
    public void start() {
        webTester = new WebTester();
        webTester.setTestingEngineKey(TestingEngineRegistry.TESTING_ENGINE_HTMLUNIT);
        webTester.getTestContext().setBaseUrl(WEBSITE_URL);
    }
    @Test
    public void sanity() throws Exception {
        webTester.beginAt("/orderEntry.html");
        webTester.assertTitleEquals("Order Entry Form");
    }
    @Test
    public void idIsRequired() throws Exception {
        webTester.beginAt("/orderEntry.html");
        webTester.submit();
        webTester.assertTextPresent("ID Missing!");
    }
    @Test
    public void nameIsRequired() throws Exception {
        webTester.beginAt("/orderEntry.html");
        webTester.setTextField("id","AB12");
        webTester.submit();
        webTester.assertTextPresent("Name Missing!");
    }
    @Test
    public void validOrderSucceeds() throws Exception {
        webTester.beginAt("/orderEntry.html");
        webTester.setTextField("id","AB12");
        webTester.setTextField("name","Joe Bloggs");

        //fill in order line one
        webTester.setTextField("lineOneItemNumber", "AA");
        webTester.setTextField("lineOneQuantity", "12");
        webTester.setTextField("lineOneUnitPrice", "3.4");

        //fill in order line two
        webTester.setTextField("lineTwoItemNumber", "BB");
        webTester.setTextField("lineTwoQuantity", "14");
        webTester.setTextField("lineTwoUnitPrice", "5.6");

        webTester.submit();
        webTester.assertTextPresent("Total: 119.20");
    }
    private WebTester webTester;
}

myServlet.doGet(new HttpServletRequestWrapper() {
     public HttpSession getSession() {
         return mockSession;
     }

     ...
}

public void testSomething() {
    myServlet.doGet(createMockRequest(), createMockResponse());
}

protected HttpServletRequest createMockRequest() {
   HttpServletRequest request = new HttpServletRequestWrapper() {
        //overrided methods
   }
}