public function testHasValues()
 {
     $c = new Client();
     $r = new Request('GET', '/');
     $res = new Response(200);
     $t = new Transaction($c, $r);
     $e = new CompleteEvent($t);
     $e->intercept($res);
     $this->assertTrue($e->isPropagationStopped());
     $this->assertSame($res, $e->getResponse());
 }