public function setUp()
 {
     $this->varnishOptions = new VarnishOptions();
     $this->varnishOptions->setCacheEnabled(true);
     $this->listener = new InjectCacheHeaderListener($this->varnishOptions);
     $this->listener->setLayoutUpdater(new LayoutUpdater());
     $this->eventManager = new EventManager(new SharedEventManager());
     $this->eventManager->getSharedManager()->clearListeners(InjectCacheHeaderListener::class);
     $this->attachStrategy(DefaultStrategy::class, 100);
     $this->listener->setEventManager($this->eventManager);
     $this->createMvcEvent();
 }