FilterLanguageTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\language\Kernel\Views;

use Drupal\views\Views;

/**
 * Tests the filter language handler.
 *
 * @group language
 * @see \Drupal\language\Plugin\views\filter\Language
 */
class FilterLanguageTest extends LanguageTestBase {
  
  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = [
    'test_view',
  ];
  
  /**
   * Tests the language filter.
   */
  public function testFilter() : void {
    $view = Views::getView('test_view');
    foreach ([
      'en' => 'John',
      'xx-lolspeak' => 'George',
    ] as $langcode => $name) {
      $view->setDisplay();
      $view->displayHandlers
        ->get('default')
        ->overrideOption('filters', [
        'langcode' => [
          'id' => 'langcode',
          'table' => 'views_test_data',
          'field' => 'langcode',
          'value' => [
            $langcode => $langcode,
          ],
        ],
      ]);
      $this->executeView($view);
      $expected = [
        [
          'name' => $name,
        ],
      ];
      $this->assertIdenticalResultset($view, $expected, [
        'views_test_data_name' => 'name',
      ]);
      $expected = [
        '***LANGUAGE_site_default***',
        '***LANGUAGE_language_interface***',
        'en',
        'xx-lolspeak',
        'und',
        'zxx',
      ];
      $this->assertSame($expected, array_keys($view->filter['langcode']
        ->getValueOptions()));
      $view->destroy();
    }
  }

}