LegacyHookTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\system\Functional\Extension;

use Drupal\Tests\BrowserTestBase;

/**
 * Tests the LegacyHook attribute.
 *
 * @group Hook
 */
class LegacyHookTest extends BrowserTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'legacy_hook_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests the LegacyHook attribute.
   */
  public function testLegacyHook() : void {
    // Calling legacy_hook_test1 leads to a fatal error so there's no need
    // for asserts to show it does not get called.
    \Drupal::moduleHandler()->invokeAll('test1');
    // Verify the module actually exists and works even with one LegacyHook.
    $result = \Drupal::moduleHandler()->invokeAll('test2');
    $this->assertSame([
      'ok',
    ], $result);
    \Drupal::moduleHandler()->invoke('legacy_hook_test', 'test1');
    $result = \Drupal::moduleHandler()->invoke('legacy_hook_test', 'test2');
    $this->assertSame('ok', $result);
  }

}