public  void doTest(String jspName) throws Exception 
{
        WebRequest request = new PostMethodWebRequest(jspName); // use post
        String paramValue = "aàeèiìoòuù";
        request.setParameter("testparam", paramValue);
        WebResponse response = runner.getResponse(request);
        if (log.isDebugEnabled())
        {
            log.debug(response.getText());
        }
        WebTable[] tables = response.getTables();
        assertEquals("Wrong number of tables", 1, tables.length);
        WebLink[] links = response.getLinks();
        assertEquals("Wrong number of links", 3, links.length); // sorting + paging
        String url = URLDecoder.decode(links[0].getURLString(), "UTF-8");
        assertTrue("Param value not found in generated links.", StringUtils.contains(url, paramValue));
}

Link generated for results navigation is breaking national character taken from FormBean.

 public String getJspName() 
{
        return "DISPL-249.jsp";
}