public function testCSSColumnClasses()
    {
        $obj = new ExportData();
        $obj->add('Vivid Color', 'orange')->add('Definitive_SHAPE', 'rectangle');
        $export = new HTMLExporter($obj);
        $control = '<table>
<thead>
<tr><td class="colgroup-vivid-color">Vivid Color</th><td class="colgroup-definitive-shape">Definitive_SHAPE</th></tr>
</thead>
<tbody>
<tr><td class="colgroup-vivid-color">orange</td><td class="colgroup-definitive-shape">rectangle</td></tr>
</tbody>
</table>
';
        $this->assertSame($control, $export->export());
    }
    /**
     * Constructor
     */
    public function __construct(ExportData $data, $filename = '')
    {
        parent::__construct($data, $filename);
        $this->format->bol = "<tr>";
        $this->format->eol = "</tr>" . $this->format->cr;
        $this->format->html = '<!DOCTYPE html>

  <html>
  <head>
      <title></title>
      <style type="text/css"></style>
  </head>

  <body></body>
  </html>';
        $this->format->css = NULL;
    }