public  void doTest(String jspName) throws Exception 
{
        WebRequest request = new GetMethodWebRequest(jspName);
        ParamEncoder encoder = new ParamEncoder("table");
        request.setParameter(encoder.encodeParameterName(TableTagParameters.PARAMETER_PAGE), "3");
        WebResponse response = runner.getResponse(request);
        if (log.isDebugEnabled())
        {
            log.debug(response.getText());
        }
        WebTable[] tables = response.getTables();
        assertEquals("Wrong number of tables.", 1, tables.length);
        assertNotNull("Not in page 2 as expected?", response.getElementWithID("PAGETWO"));
}

No exception when an invalid page is requested.

 public String getJspName() 
{
        return "DISPL-118.jsp";
}