Frequently Asked Questions


	Answers


	How to verify that a cookie was sent from the Servlet back to the client ?

J2EEUnit provides some helper code (j2eeunit.AssertUtils) to retrieve cookies sent back in the HTTP response. For example, you can use the following code (or check the J2EEUnit sample application) :

Code in the class to unit test :

public class SampleServlet extends HttpServlet
[...]
    /**
     * Set a cookie for sending back to the client. This is to verify that
     * it is possible with J2EEUnit to assert the cookies returned to the client
     *
     * @param theResponse the HTTP response
     */
     public void setResponseCookie(HttpServletResponse theResponse)
     {
        Cookie cookie = new Cookie("responsecookie", "this is a response cookie");
        cookie.setDomain("j2eeunit.sourceforge.net");
        theResponse.addCookie(cookie);
    }

Code in the J2EEUnit test class :

public class TestSampleServlet extends ServletTestCase
[...]
    /**
     * Test that it is possible to send back a Cookie and verify it on the
     * client side.
     */
    public void testReceiveCookie()
    {
        SampleServlet servlet = new SampleServlet();
        servlet.setResponseCookie(response);
    }

    /**
     * Test that it is possible to send back a Cookie and verify it on the
     * client side.
     *
     * @param theConnection the HTTP connection that was used to call the
     *                      server redirector. It contains the returned HTTP
     *                      response.
     */
    public void endReceiveCookie(HttpURLConnection theConnection)
    {
        Hashtable cookies = AssertUtils.getCookies(theConnection);

        Vector list = (Vector)cookies.get("responsecookie");
        assert(list.size() == 1);

        ClientCookie cookie = (ClientCookie)list.elementAt(0);
        assertEquals("responsecookie", cookie.getName());
        assertEquals("this is a response cookie", cookie.getValue());
        assertEquals("j2eeunit.sourceforge.net", cookie.getDomain());
    }


	How to write a unit test for a class that calls the getServletContext() , getServletConfig(), log() (i.e methods inherited from GenericServlet) ?

Simply call the init(ServletConfig) method on your servlet to test prior to calling the method to test.

Example (from the J2EEUnit sample application) :

    /**
     * Verify that we can unit test a servlet that makes calls to
     * <code>getServletConfig()</code>, <code>getServletContext()</code>,
     * <code>log()</code>, ... (i.e. methods inherited from
     * <code>GenericServlet</code>).
     *
     * @see TestSampleServletConfig_Helper
     */
    public void testServletConfig() throws ServletException
    {
        SampleServletConfig servlet = new SampleServletConfig();

        // VERY IMPORTANT : Call the init() method in order to initialize the
        //                  Servlet ServletConfig object.
        servlet.init(config);

        assertEquals("value1 used for testing", servlet.getConfigData());
    }