Twig_Environment::compile PHP Method

    public function compile(Twig_NodeInterface $node)
    {
        return $this->getCompiler()->compile($node)->getSource();
    }

 /**
  * @dataProvider getTests
  */
 public function testIntegration($file, $test, $message, $templates)
 {
     $loader = new Twig_Loader_Array($templates);
     $twig = new Twig_Environment($loader, array('trim_blocks' => true, 'cache' => false));
     $twig->addExtension(new Twig_Extension_Escaper());
     $twig->addExtension(new TestExtension());
     try {
         $template = $twig->loadTemplate('index.twig');
     } catch (Twig_SyntaxError $e) {
         $e->setFilename($file);
         throw $e;
     } catch (Exception $e) {
         throw new Twig_Error($e->getMessage() . ' (in ' . $file . ')');
     }
     preg_match_all('/--DATA--(.*?)--EXPECT--(.*?)(?=\\-\\-DATA\\-\\-|$)/s', $test, $matches, PREG_SET_ORDER);
     foreach ($matches as $match) {
         $output = trim($template->render(eval($match[1] . ';')), "\n ");
         $expected = trim($match[2], "\n ");
         if ($expected != $output) {
             echo 'Compiled template that failed:';
             foreach (array_keys($templates) as $name) {
                 echo "Template: {$name}\n";
                 $source = $loader->getSource($name);
                 echo $twig->compile($twig->parse($twig->tokenize($source, $name)));
             }
         }
         $this->assertEquals($expected, $output, $message . ' (in ' . $file . ')');
     }
 }