custom-elements/reactions/HTMLOptGroupElement.html

<!DOCTYPE html>
<title>Custom Elements: CEReactions on HTMLOptGroupElement interface</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<meta name="assert" content="disabled, label of
  HTMLOptGroupElement interface must have CEReactions">
<meta name="help" content="https://html.spec.whatwg.org/#the-optgroup-element">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/custom-elements-helpers.js"></script>
<script src="./resources/reactions.js"></script>

<body>
<script>

function getParentElement() {
  let element = document.createElement('select');
  document.body.appendChild(element);
  return element;
}

function setAttributes(instance) {
  instance.setAttribute('label', 'group1');
}

testReflectBooleanAttributeWithDependentAttributes(
  'disabled', 'disabled', 'disabled on HTMLOptGroupElement',
  'optgroup', getParentElement, instance => setAttributes(instance),
  HTMLOptGroupElement
);

testReflectAttributeWithParentNode(
  'label', 'label', 'group1',
  'group2', 'label on HTMLOptGroupElement', 'optgroup',
  getParentElement, HTMLOptGroupElement
);

</script>
</body>