function ContainerAwareEventDispatcherTest::testAddSubscriberWithPriorities

File

core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php, line 381

Class

ContainerAwareEventDispatcherTest

Unit tests for the ContainerAwareEventDispatcher.

Namespace

Code

public function testAddSubscriberWithPriorities() : void {
    $eventSubscriber = new TestEventSubscriber();
    $this->dispatcher
        ->addSubscriber($eventSubscriber);
    $eventSubscriber = new TestEventSubscriberWithPriorities();
    $this->dispatcher
        ->addSubscriber($eventSubscriber);
    $listeners = $this->dispatcher
        ->getListeners('pre.foo');
    $this->assertTrue($this->dispatcher
        ->hasListeners(self::PRE_FOO));
    $this->assertCount(2, $listeners);
    $this->assertInstanceOf(TestEventSubscriberWithPriorities::class, $listeners[0][0]);
}