class FormElementLabelTest

class FormElementLabelTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'system',
  ];
  
  /**
   * Ensures that attributes can be placed for form element label.
   */
  public function testAttributes() {
    $render_array = [
      '#type' => 'label',
      '#attributes' => [
        'class' => [
          'kitten',
        ],
      ],
      '#title' => 'Kittens',
      '#title_display' => 'above',
    ];
    $css_selector_converter = new CssSelectorConverter();
    $this->render($render_array);
    $elements = $this->xpath($css_selector_converter->toXPath('.kitten'));
    $this->assertCount(1, $elements);
    // Add label attributes to a form element.
    $render_array = [
      '#type' => 'textfield',
      '#label_attributes' => [
        'class' => [
          'meow',
        ],
      ],
      '#title' => 'Kitten sounds',
    ];
    $this->render($render_array);
    $elements = $this->xpath($css_selector_converter->toXPath('label.meow'));
    $this->assertCount(1, $elements);
  }

}