public function ContainerAwareEventDispatcherTest::testHasListenersWhenAddedCallbackListenerIsRemoved in Drupal 10

Same name and namespace in other branches

1. 8 core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php \Drupal\Tests\Component\EventDispatcher\ContainerAwareEventDispatcherTest::testHasListenersWhenAddedCallbackListenerIsRemoved()
2. 9 core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php \Drupal\Tests\Component\EventDispatcher\ContainerAwareEventDispatcherTest::testHasListenersWhenAddedCallbackListenerIsRemoved()

File

core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php, line 448

Class

ContainerAwareEventDispatcherTest

Unit tests for the ContainerAwareEventDispatcher.

Namespace

Drupal\Tests\Component\EventDispatcher

Code

public function testHasListenersWhenAddedCallbackListenerIsRemoved() {
  $listener = function () {
  };
  $this->dispatcher
    ->addListener('foo', $listener);
  $this->dispatcher
    ->removeListener('foo', $listener);
  $this
    ->assertFalse($this->dispatcher
    ->hasListeners());
}