class BlockLanguageCacheTest

class BlockLanguageCacheTest extends BrowserTestBase {
  
  /**
   * Modules to install.
   *
   * @var array
   */
  protected static $modules = [
    'block',
    'language',
    'menu_ui',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * List of langcodes.
   *
   * @var array
   */
  protected $langcodes = [];
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    // Create test languages.
    $this->langcodes = [
      ConfigurableLanguage::load('en'),
    ];
    for ($i = 1; $i < 3; ++$i) {
      $language = ConfigurableLanguage::create([
        'id' => 'l' . $i,
        'label' => $this->randomString(),
      ]);
      $language->save();
      $this->langcodes[$i] = $language;
    }
  }
  
  /**
   * Creates a block in a language, check blocks page in all languages.
   */
  public function testBlockLinks() {
    // Create admin user to be able to access block admin.
    $admin_user = $this->drupalCreateUser([
      'administer blocks',
      'access administration pages',
      'administer menu',
    ]);
    $this->drupalLogin($admin_user);
    // Create the block cache for all languages.
    foreach ($this->langcodes as $langcode) {
      $this->drupalGet('admin/structure/block', [
        'language' => $langcode,
      ]);
      $this->clickLink('Place block');
    }
    // Create a menu in the default language.
    $edit['label'] = $this->randomMachineName();
    $edit['id'] = mb_strtolower($edit['label']);
    $this->drupalGet('admin/structure/menu/add');
    $this->submitForm($edit, 'Save');
    $this->assertSession()
      ->pageTextContains('Menu ' . $edit['label'] . ' has been added.');
    // Check that the block is listed for all languages.
    foreach ($this->langcodes as $langcode) {
      $this->drupalGet('admin/structure/block', [
        'language' => $langcode,
      ]);
      $this->clickLink('Place block');
      $this->assertSession()
        ->pageTextContains($edit['label']);
    }
  }

}