public function testOnKernelResponseGetWithExpression() { $tag = new Tag(array('expression' => '"item-"~id')); $request = new Request(); $request->setMethod('GET'); $request->attributes->set('_tag', array($tag)); $request->attributes->set('id', '123'); $event = $this->getEvent($request); $this->listener->onKernelResponse($event); $this->assertEquals( 'item-123', $event->getResponse()->headers->get($this->cacheManager->getTagsHeader()) ); }