class LanguageTest

class LanguageTest extends UnitTestCase {
  
  /**
   * The plugin under test.
   *
   * @var \Drupal\ckeditor\Plugin\CKEditorPlugin\Language
   */
  protected $plugin;
  
  /**
   * {@inheritdoc}
   */
  public function setUp() : void {
    $this->plugin = new Language([], $this->randomMachineName(), []);
  }
  
  /**
   * Provides a list of configs to test.
   */
  public function providerGetConfig() {
    return [
      [
        'un',
        LanguageManager::getUnitedNationsLanguageList(),
      ],
      [
        'all',
        LanguageManager::getStandardLanguageList(),
      ],
    ];
  }
  
  /**
   * @covers ::getConfig
   *
   * @dataProvider providerGetConfig
   */
  public function testGetConfig($language_list, $expected_languages) {
    $editor = $this->getMockBuilder('Drupal\\editor\\Entity\\Editor')
      ->disableOriginalConstructor()
      ->getMock();
    $editor->expects($this->once())
      ->method('getSettings')
      ->willReturn([
      'plugins' => [
        'language' => [
          'language_list' => $language_list,
        ],
      ],
    ]);
    $config = $this->plugin
      ->getConfig($editor);
    $this->assertIsArray($config);
    $this->assertContains('ar:Arabic:rtl', $config['language_list']);
    $this->assertContains('zh-hans:Chinese, Simplified', $config['language_list']);
    $this->assertContains('en:English', $config['language_list']);
    $this->assertContains('fr:French', $config['language_list']);
    $this->assertContains('ru:Russian', $config['language_list']);
    $this->assertContains('ar:Arabic:rtl', $config['language_list']);
    $this->assertSameSize($expected_languages, $config['language_list']);
  }

}