@Deployment(testable = false)
public static WebArchive createDeployment() {
    WebArchive war = ShrinkWrap.create(WebArchive.class)
            .addClass(SimpleServlet.class);
    return war;
}git clone git://github.com/javaee-samples/javaee7-samples.git
cd javaee7-samples/servlet/simple-servlet/mvn testmvn test -Dtest=SimpleServletTest@Deployment(testable = false)
public static WebArchive createDeployment() {
    WebArchive war = ShrinkWrap.create(WebArchive.class)
            .addClass(SimpleServlet.class);
    return war;
}@Test
public void testGet() throws IOException, SAXException {
    TextPage page = webClient.getPage(base + "/SimpleServlet");
    assertEquals("my GET", page.getContent());
}@Test
public void testPost() throws IOException, SAXException {
    WebRequest request = new WebRequest(new URL(base + "/SimpleServlet"), HttpMethod.POST);
    TextPage page = webClient.getPage(request);
    assertEquals("my POST", page.getContent());
}There's a lot more about JavaEE to cover. If you're ready to learn more, check out the other available samples.
git clone git://github.com/javaee-samples/javaee7-samples.git
cd javaee7-samples/servlet/simple-servlet/Do the changes as you see fit and send a pull request!
Good Luck!