public  void doTest(String jspName) throws Exception 
{
        ParamEncoder encoder = new ParamEncoder("table");
        String mediaParameter = encoder.encodeParameterName(TableTagParameters.PARAMETER_EXPORTTYPE);
        WebRequest request = new GetMethodWebRequest(jspName);
        // this will force media type initialization
        ExportViewFactory.getInstance();
        MediaTypeEnum pdfMedia = MediaTypeEnum.fromName("pdf");
        assertNotNull("Pdf export view not correctly registered.", pdfMedia);
        request.setParameter(mediaParameter, Integer.toString(pdfMedia.getCode()));
        // this will enable the filter!
        request.setParameter(TableTagParameters.PARAMETER_EXPORTING, "1");
        WebResponse response = runner.getResponse(request);
        // we are really testing an xml output?
        assertEquals("Expected a different content type.", "application/pdf", response.getContentType());
        assertTrue("Content length should be set.", response.getContentLength()  > -1);
        InputStream stream = response.getInputStream();
        byte[] result = new byte[response.getContentLength()];
        stream.read(result);
        PdfReader reader = new PdfReader(result);
        assertEquals("Expected a valid pdf file with a single page", 1, reader.getNumberOfPages());
}

Test for content disposition and filename.

 public String getJspName() 
{
        return "exportfull.jsp";
}