function LanguageFallbackTest::testCandidates

Tests language fallback candidates.

File

core/modules/language/tests/src/Kernel/LanguageFallbackTest.php, line 32

Class

LanguageFallbackTest

Tests the language fallback behavior.

Namespace

Code

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.');
}