public  void doTest(String jspName) throws Exception 
{
        ParamEncoder encoder = new ParamEncoder("table");
        String mediaParameter = encoder.encodeParameterName(TableTagParameters.PARAMETER_EXPORTTYPE);
        WebRequest request = new GetMethodWebRequest(jspName);
        request.setParameter(mediaParameter, Integer.toString(MediaTypeEnum.CSV.getCode()));
        WebResponse response = runner.getResponse(request);
        assertEquals("Expected a different content type.", "text/csv", response.getContentType());
        // second column should be empty
        assertEquals("Wrong content.", "ant,,camel\nant,,camel\n", response.getText());
        // now export a nested table
        encoder = new ParamEncoder("nested");
        mediaParameter = encoder.encodeParameterName(TableTagParameters.PARAMETER_EXPORTTYPE);
        request = new GetMethodWebRequest(jspName);
        request.setParameter(mediaParameter, Integer.toString(MediaTypeEnum.CSV.getCode()));
        // this test needs the export filter
        request.setParameter(TableTagParameters.PARAMETER_EXPORTING, "1");
        response = runner.getResponse(request);
        assertEquals("Expected a different content type.", "text/csv", response.getContentType());
        // second column should be empty
        assertEquals("Wrong content.", "bee\nbee\n", response.getText());
}

Nested tables should be ignored.

 public String getJspName() 
{
        return "DISPL-142.jsp";
}