Test that ensures that a controller action is only accessible by beta testers

FeatureXController.php

<?php

namespace Acme\Bundle\WebBundle\Controller;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\Routing\RouterInterface;
use Symfony\Component\Security\Core\SecurityContextInterface;

use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;

use JMS\DiExtraBundle\Annotation as DI;

/**
 * @Route("/feature-x")
 */
class FeatureXController
{
    /**
     * @Route("/{someSlug}/{anotherSlug}")
     *
     * @Template()
     */
    public function featureXAction(Request $request, $someSlug, $anotherSlug)
    {
        if (!$this->getSecurityContext()->isGranted('FEATURE_BETA')) { // or, say, ROLE_BETA_TESTER depending on your needs
            throw new NotFoundHttpException();
        }

        // do something for feature X

        return array();
    }

    /**
     * @DI\LookupMethod("router")
     *
     * @return RouterInterface
     */
    protected function getRouter()
    {
    }

    /**
     * @DI\LookupMethod("security.context")
     *
     * @return SecurityContextInterface
     */
    protected function getSecurityContext()
    {
    }
}

FeatureXControllerTest.php

<?php

namespace Acme\Bundle\WebBundle\Tests\Controller;

use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

class FeatureXControllerTest extends WebTestCase
{
    /**
     * @expectedException \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
     */
    public function testFeatureXThrowsNotFoundExceptionWhenUserIsNotBetaTester()
    {
        $securityContext = $this->getMock('Symfony\Component\Security\Core\SecurityContextInterface');

        $securityContext
            ->expects($this->once())
            ->method('isGranted')
            ->will($this->returnValue(false))
        ;

        $controller = $this->getMockBuilder('Acme\Bundle\WebBundle\Controller\FeatureXController')
            ->setMethods(array('getSecurityContext'))
            ->getMock();

        $controller
            ->expects($this->once())
            ->method('getSecurityContext')
            ->will($this->returnValue($securityContext))
        ;

        $request = $this->getMock('Symfony\Component\HttpFoundation\Request');

        $controller->featureXAction($request, 'some-slug', 'another-slug');
    }
}