Usage.php

<?php

class DescribeIndex extends View
{
    function itRendersTheSelectedVideo()
    {
        $video = \Mockery::mock(
            'Application_Model_Video', array('getName' => 'Revolution OS'));
        
        $output = $this->render('MyBundle:Video:detail.html.twig', array(
            'video' => $video,
        );
        $output->should->contain('Revolution OS');
    }
}

ViewContext.php

<?php

use PHPSpec\Context;
use OpenSky\Component\DependencyInjection\TemplatingEngineAwareInterface;
use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;

class View extends Context
{
    private $engine;

    public function setTemplatingEngine(EngineInterface $engine)
    {
        $this->engine = $engine;
    }

    public function spec()
    {
        $interceptor = call_user_func_array(
            array(
            '\PHPSpec\Specification\Interceptor\InterceptorFactory',
            'create'), func_get_args()
        );

        $interceptor->addMatchers(array('contain', 'haveSelector'));
        return $interceptor;
    }

    public function render($template, array $templateContext = array())
    {
        if (is_null($this->engine)) {
            throw new \LogicException('No templating engine set.');
        }

        return $this->spec($this->engine->render($template, $templateContext));
    }

}