public function testNotifyChain() { $event = new Event('test'); $event->attach(new Stubs\EventObserverStubFail()); $event->attach(new Stubs\EventObserverStubNoQualify()); $event->attach(new Stubs\EventObserverStub()); $event->setArgument('failerran', false); $this->expectOutputString('STUBSTUB'); $event->notify(); $this->assertFalse($event->getArgument('failerran')); }