DOMPDFModule\View\Renderer\PdfRenderer::render PHP Method

    public function render($nameOrModel, $values = null)
    {
        $html = $this->getHtmlRenderer()->render($nameOrModel, $values);
        $paperSize = $nameOrModel->getOption('paperSize');
        $paperOrientation = $nameOrModel->getOption('paperOrientation');
        $basePath = $nameOrModel->getOption('basePath');
        $pdf = $this->getEngine();
        $pdf->set_paper($paperSize, $paperOrientation);
        $pdf->set_base_path($basePath);
        $pdf->load_html($html);
        $pdf->render();
        return $pdf->output();
    }

 public function testResponseHeadersWithFileName()
 {
     $model = new PdfModel();
     $model->setTemplate('basic.phtml');
     $model->setOption('filename', 'testPdfFileName');
     $this->event->setModel($model);
     $this->event->setResponse($this->response);
     $this->event->setRenderer($this->renderer);
     $this->event->setResult($this->renderer->render($model));
     $this->strategy->injectResponse($this->event);
     $headers = $this->event->getResponse()->getHeaders();
     $contentDisposition = $headers->get('Content-Disposition');
     $this->assertInstanceOf('Zend\\Http\\Header\\ContentDisposition', $contentDisposition);
     $this->assertEquals($contentDisposition->getFieldValue(), 'attachment; filename=testPdfFileName.pdf');
     ob_end_flush();
     // Clear out any buffers held by renderers.
 }