public function testAddRemoveSubscriber()
{
$dispatcher = new EventDispatcher();
$tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch());
$subscriber = new EventSubscriber();
$tdispatcher->addSubscriber($subscriber);
$listeners = $dispatcher->getListeners('foo');
$this->assertCount(1, $listeners);
$this->assertSame(array($subscriber, 'call'), $listeners[0]);
$tdispatcher->removeSubscriber($subscriber);
$this->assertCount(0, $dispatcher->getListeners('foo'));
}
