ArgumentLanguageTest.php

<?php

namespace Drupal\Tests\language\Kernel\Views;

use Drupal\views\Views;

/**
 * Tests the argument language handler.
 *
 * @group language
 * @see \Drupal\language\Plugin\views\argument\Language.php
 */
class ArgumentLanguageTest extends LanguageTestBase {
  
  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = [
    'test_view',
  ];
  
  /**
   * Tests the language argument.
   */
  public function testArgument() {
    $view = Views::getView('test_view');
    foreach ([
      'en' => 'John',
      'xx-lolspeak' => 'George',
    ] as $langcode => $name) {
      $view->setDisplay();
      $view->displayHandlers
        ->get('default')
        ->overrideOption('arguments', [
        'langcode' => [
          'id' => 'langcode',
          'table' => 'views_test_data',
          'field' => 'langcode',
        ],
      ]);
      $this->executeView($view, [
        $langcode,
      ]);
      $expected = [
        [
          'name' => $name,
        ],
      ];
      $this->assertIdenticalResultset($view, $expected, [
        'views_test_data_name' => 'name',
      ]);
      $view->destroy();
    }
  }

}