public  void doTest(String jspName) throws Exception 
{
        WebRequest request = new GetMethodWebRequest(jspName);
        ParamEncoder encoder = new ParamEncoder("table");
        String pageParameter = encoder.encodeParameterName(TableTagParameters.PARAMETER_PAGE);
        request.setParameter(pageParameter, "2");
        WebResponse response = runner.getResponse(request);
        if (log.isDebugEnabled())
        {
            log.debug(response.getText());
        }
        WebTable[] tables = response.getTables();
        assertEquals("Wrong number of tables in result.", 1, tables.length);
        assertEquals("Wrong number of rows in result.", 3, tables[0].getRowCount());
        if (log.isDebugEnabled())
        {
            log.debug(response.getText());
        }
        assertEquals("Wrong column header.", "Number", tables[0].getCellAsText(0, 0));
        assertEquals("Wrong column content.", "3", tables[0].getCellAsText(1, 0));
        assertEquals("Wrong column content.", "4", tables[0].getCellAsText(2, 0));
        TableCell headerCell = tables[0].getTableCell(0, 0);
        String cssClass = headerCell.getClassName();
        assertEqualsIgnoreOrder("Wrong css attributes.", new String[]{"sortable", "sorted", "order2"}, StringUtils
            .split(cssClass));
        WebLink[] headerLinks = headerCell.getLinks();
        assertEquals("Sorting link not found.", 1, headerLinks.length);
        WebLink sortingLink = headerLinks[0];
        assertEqualsIgnoreOrder(
            "Wrong parameters.",
            new String[]{"sort", "searchid", "dir", pageParameter},
            sortingLink.getParameterNames());
        HTMLElement pagebanner = response.getElementWithID("pagebanner");
        assertEquals("Wrong page banner", "10|3|4", pagebanner.getText());
        HTMLElement pagelinks = response.getElementWithID("pagelinks");
        assertEquals("Wrong page links", "1|[2]|3|4|5", pagelinks.getText());
}

No exception when an invalid page is requested.

 public String getJspName() 
{
        return "DISPL-129.jsp";
}