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