/**
  * @covers Dafiti\Silex\Listener\Header::create
  */
 public function testCreateShouldReturnHeaderInstance()
 {
     $config = [];
     $config['available_accepts'] = [];
     $config['default_accept'] = 'application/json';
     $result = Header::create($config);
     $this->assertInstanceOf('Dafiti\\Silex\\Listener\\Header', $result);
 }
 public function register(Application $app)
 {
     $app['dispatcher']->addSubscriber(HeaderListener::create($this->config));
     $app['dispatcher']->addSubscriber(new ResponseListener());
 }