save(); // Set language field visible. \Drupal::service('entity_display.repository') ->getViewDisplay('node', 'page', 'full') ->setComponent('langcode') ->save(); // Create a node in Spanish. $node = $this->drupalCreateNode(['langcode' => 'es']); $this->drupalGet($node->toUrl()); $this->assertSession()->pageTextContains('Spanish'); } }