markTestSkipped('Skip under HHVM as the behavior is not the same as plain PHP (which is an edge case anyway)'); } $twig = new Twig_Environment(new Twig_Loader_Array(array('index' => '{{ d1.date }}{{ d2.date }}')), array( 'debug' => true, 'cache' => false, 'autoescape' => false, )); $d1 = new DateTime(); $d2 = new DateTime(); $output = $twig->render('index', compact('d1', 'd2')); // If it fails, PHP will crash. $this->assertEquals($output, $d1->date.$d2->date); } }