function ContainerAwareEventDispatcherTest::testAddListener

File

core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php, line 240

Class

ContainerAwareEventDispatcherTest

Unit tests for the ContainerAwareEventDispatcher.

Namespace

Code

public function testAddListener() {
    $this->dispatcher
        ->addListener('pre.foo', [
        $this->listener,
        'preFoo',
    ]);
    $this->dispatcher
        ->addListener('post.foo', [
        $this->listener,
        'postFoo',
    ]);
    $this->assertTrue($this->dispatcher
        ->hasListeners());
    $this->assertTrue($this->dispatcher
        ->hasListeners(self::PRE_FOO));
    $this->assertTrue($this->dispatcher
        ->hasListeners(self::POST_FOO));
    $this->assertCount(1, $this->dispatcher
        ->getListeners(self::PRE_FOO));
    $this->assertCount(1, $this->dispatcher
        ->getListeners(self::POST_FOO));
    $this->assertCount(2, $this->dispatcher
        ->getListeners());
}