public function testRemovingListenerFromEvent()
{
$eventName = 'foo';
$listener = $this->getMock('\\SplObserver');
$dispatcher = new EventDispatcher();
$dispatcher->registerEvent($eventName);
$dispatcher->addListenerToEvent($eventName, $listener);
$events = $dispatcher->getRegisteredEvents();
/** @var Event $event */
$event = $events[$eventName];
$listeners = $event->getListeners();
$this->assertTrue($listeners->contains($listener));
$dispatcher->removeListenerFromEvent($eventName, $listener);
$this->assertFalse($listeners->contains($listener));
}
