LanguageFallbackTest.php in Drupal 9

Namespace

Drupal\Tests\language\Kernel

File

core/modules/language/tests/src/Kernel/LanguageFallbackTest.php

<?php

namespace Drupal\Tests\language\Kernel;

use Drupal\Core\Language\LanguageInterface;
use Drupal\language\Entity\ConfigurableLanguage;

/**
 * Tests the language fallback behavior.
 *
 * @group language
 */
class LanguageFallbackTest extends LanguageTestBase {

  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $i = 0;
    foreach ([
      'af',
      'am',
      'ar',
    ] as $langcode) {
      $language = ConfigurableLanguage::createFromLangcode($langcode);
      $language
        ->set('weight', $i--);
      $language
        ->save();
    }
  }

  /**
   * Tests language fallback candidates.
   */
  public function testCandidates() {
    $language_list = $this->languageManager
      ->getLanguages();
    $expected = array_keys($language_list + [
      LanguageInterface::LANGCODE_NOT_SPECIFIED => NULL,
    ]);

    // Check that language fallback candidates by default are all the available
    // languages sorted by weight.
    $candidates = $this->languageManager
      ->getFallbackCandidates();
    $this
      ->assertEquals($expected, array_values($candidates), 'Language fallback candidates are properly returned.');

    // Check that candidates are alterable.
    $this->state
      ->set('language_test.fallback_alter.candidates', TRUE);
    $expected = array_slice($expected, 0, count($expected) - 1);
    $candidates = $this->languageManager
      ->getFallbackCandidates();
    $this
      ->assertEquals($expected, array_values($candidates), 'Language fallback candidates are alterable.');

    // Check that candidates are alterable for specific operations.
    $this->state
      ->set('language_test.fallback_alter.candidates', FALSE);
    $this->state
      ->set('language_test.fallback_operation_alter.candidates', TRUE);
    $expected[] = LanguageInterface::LANGCODE_NOT_SPECIFIED;
    $expected[] = LanguageInterface::LANGCODE_NOT_APPLICABLE;
    $candidates = $this->languageManager
      ->getFallbackCandidates([
      'operation' => 'test',
    ]);
    $this
      ->assertEquals($expected, array_values($candidates), 'Language fallback candidates are alterable for specific operations.');

    // Check that when the site is monolingual no language fallback is applied.

    /** @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface $configurable_language_storage */
    $configurable_language_storage = $this->container
      ->get('entity_type.manager')
      ->getStorage('configurable_language');
    foreach ($language_list as $langcode => $language) {
      if (!$language
        ->isDefault()) {
        $configurable_language_storage
          ->load($langcode)
          ->delete();
      }
    }
    $candidates = $this->languageManager
      ->getFallbackCandidates();
    $this
      ->assertEquals([
      LanguageInterface::LANGCODE_DEFAULT,
    ], array_values($candidates), 'Language fallback is not applied when the Language module is not enabled.');
  }

}

Classes

Name	Description
LanguageFallbackTest	Tests the language fallback behavior.