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<?php
declare(strict_types=1);
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(): void {
$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.');
}
}
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