FilterLanguageTest.php

<?php

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() {
        $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,
                    ],
                ],
            ]);
            $this->executeView($view);
            $expected = [
                [
                    'name' => $name,
                ],
            ];
            $this->assertIdenticalResultset($view, $expected, [
                'views_test_data_name' => 'name',
            ]);
            $expected = [
                '***LANGUAGE_site_default***',
                '***LANGUAGE_language_interface***',
                '***LANGUAGE_language_content***',
                'en',
                'xx-lolspeak',
                'und',
                'zxx',
            ];
            $this->assertIdentical(array_keys($view->filter['langcode']
                ->getValueOptions()), $expected);
            $view->destroy();
        }
    }

}