class LanguageSelectWidgetTest

class LanguageSelectWidgetTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'entity_test',
    'language',
    'user',
    'system',
  ];
  
  /**
   * The entity form display.
   *
   * @var \Drupal\Core\Entity\Entity\EntityFormDisplay
   */
  protected $entityFormDisplay;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->installEntitySchema('entity_test');
    $this->installEntitySchema('user');
    $storage = $this->container
      ->get('entity_type.manager')
      ->getStorage('entity_form_display');
    $this->entityFormDisplay = $storage->create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
      'status' => TRUE,
    ]);
  }
  
  /**
   * Tests the widget with the locked languages.
   */
  public function testWithIncludedLockedLanguage() {
    $this->entityFormDisplay
      ->setComponent('langcode', [
      'type' => 'language_select',
    ])
      ->save();
    $entity = EntityTest::create([
      'name' => $this->randomString(),
    ]);
    $form = $this->container
      ->get('entity.form_builder')
      ->getForm($entity);
    $options = array_keys($form['langcode']['widget'][0]['value']['#options']);
    $this->assertSame([
      'en',
      'und',
      'zxx',
    ], $options);
  }
  
  /**
   * Tests the widget without the locked languages.
   */
  public function testWithoutIncludedLockedLanguage() {
    $this->entityFormDisplay
      ->setComponent('langcode', [
      'type' => 'language_select',
      'settings' => [
        'include_locked' => FALSE,
      ],
    ])
      ->save();
    $entity = EntityTest::create([
      'name' => $this->randomString(),
    ]);
    $form = $this->container
      ->get('entity.form_builder')
      ->getForm($entity);
    $options = array_keys($form['langcode']['widget'][0]['value']['#options']);
    $this->assertSame([
      'en',
    ], $options);
  }

}