Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\system\Tests\Common;
Chris@0: 
Chris@0: use Drupal\simpletest\WebTestBase;
Chris@0: 
Chris@0: /**
Chris@0:  * Tests alteration of arguments passed to \Drupal::moduleHandler->alter().
Chris@0:  *
Chris@0:  * @group Common
Chris@0:  */
Chris@0: class AlterTest extends WebTestBase {
Chris@0: 
Chris@0:   /**
Chris@0:    * Modules to enable.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   public static $modules = ['block', 'common_test'];
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests if the theme has been altered.
Chris@0:    */
Chris@0:   public function testDrupalAlter() {
Chris@0:     // This test depends on Bartik, so make sure that it is always the current
Chris@0:     // active theme.
Chris@0:     \Drupal::service('theme_handler')->install(['bartik']);
Chris@0:     \Drupal::theme()->setActiveTheme(\Drupal::service('theme.initialization')->initTheme('bartik'));
Chris@0: 
Chris@0:     $array = ['foo' => 'bar'];
Chris@0:     $entity = new \stdClass();
Chris@0:     $entity->foo = 'bar';
Chris@0: 
Chris@0:     // Verify alteration of a single argument.
Chris@0:     $array_copy = $array;
Chris@0:     $array_expected = ['foo' => 'Drupal theme'];
Chris@0:     \Drupal::moduleHandler()->alter('drupal_alter', $array_copy);
Chris@0:     \Drupal::theme()->alter('drupal_alter', $array_copy);
Chris@0:     $this->assertEqual($array_copy, $array_expected, 'Single array was altered.');
Chris@0: 
Chris@0:     $entity_copy = clone $entity;
Chris@0:     $entity_expected = clone $entity;
Chris@0:     $entity_expected->foo = 'Drupal theme';
Chris@0:     \Drupal::moduleHandler()->alter('drupal_alter', $entity_copy);
Chris@0:     \Drupal::theme()->alter('drupal_alter', $entity_copy);
Chris@0:     $this->assertEqual($entity_copy, $entity_expected, 'Single object was altered.');
Chris@0: 
Chris@0:     // Verify alteration of multiple arguments.
Chris@0:     $array_copy = $array;
Chris@0:     $array_expected = ['foo' => 'Drupal theme'];
Chris@0:     $entity_copy = clone $entity;
Chris@0:     $entity_expected = clone $entity;
Chris@0:     $entity_expected->foo = 'Drupal theme';
Chris@0:     $array2_copy = $array;
Chris@0:     $array2_expected = ['foo' => 'Drupal theme'];
Chris@0:     \Drupal::moduleHandler()->alter('drupal_alter', $array_copy, $entity_copy, $array2_copy);
Chris@0:     \Drupal::theme()->alter('drupal_alter', $array_copy, $entity_copy, $array2_copy);
Chris@0:     $this->assertEqual($array_copy, $array_expected, 'First argument to \Drupal::moduleHandler->alter() was altered.');
Chris@0:     $this->assertEqual($entity_copy, $entity_expected, 'Second argument to \Drupal::moduleHandler->alter() was altered.');
Chris@0:     $this->assertEqual($array2_copy, $array2_expected, 'Third argument to \Drupal::moduleHandler->alter() was altered.');
Chris@0: 
Chris@0:     // Verify alteration order when passing an array of types to \Drupal::moduleHandler->alter().
Chris@0:     // common_test_module_implements_alter() places 'block' implementation after
Chris@0:     // other modules.
Chris@0:     $array_copy = $array;
Chris@0:     $array_expected = ['foo' => 'Drupal block theme'];
Chris@0:     \Drupal::moduleHandler()->alter(['drupal_alter', 'drupal_alter_foo'], $array_copy);
Chris@0:     \Drupal::theme()->alter(['drupal_alter', 'drupal_alter_foo'], $array_copy);
Chris@0:     $this->assertEqual($array_copy, $array_expected, 'hook_TYPE_alter() implementations ran in correct order.');
Chris@0:   }
Chris@0: 
Chris@0: }