CacheAttributeListener example

class CacheAttributeListenerTest extends TestCase
{
    private CacheAttributeListener $listener;
    private Response $response;
    private Cache $cache;
    private Request $request;
    private ResponseEvent $event;

    protected function setUp(): void
    {
        $this->listener = new CacheAttributeListener();
        $this->response = new Response();
        $this->cache = new Cache();
        $this->request = $this->createRequest($this->cache);
        $this->event = $this->createEventMock($this->request, $this->response);
    }

    public function testWontReassignResponseWhenResponseIsUnsuccessful()
    {
        $response = $this->event->getResponse();

        $this->response->setStatusCode(500);