function ContainerAwareEventDispatcherTest::testDispatchLazyListener

File

core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php, line 495

Class

ContainerAwareEventDispatcherTest

Unit tests for the ContainerAwareEventDispatcher.

Namespace

Code

public function testDispatchLazyListener() {
    $called = 0;
    $factory = function () use (&$called) {
        ++$called;
        return new TestWithDispatcher();
    };
    $this->dispatcher
        ->addListener('foo', [
        $factory,
        'foo',
    ]);
    $this->assertSame(0, $called);
    $this->dispatcher
        ->dispatch(new Event(), 'foo');
    $this->dispatcher
        ->dispatch(new Event(), 'foo');
    $this->assertSame(1, $called);
}