custom-elements/builtin-coverage.html

<!DOCTYPE html>
<html is="my-html">
<head>
<meta charset="utf-8">
<meta name="help" content="https://html.spec.whatwg.org/multipage/custom-elements.html#element-definition">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body is="my-body">
<div id="container"></div>
<script>
let testData = [
  {tag: 'a', interface: 'HTMLAnchorElement'},
  {tag: 'abbr', interface: 'HTMLElement'},
  {tag: 'address', interface: 'HTMLElement'},
  {tag: 'area', interface: 'HTMLAreaElement'},
  {tag: 'article', interface: 'HTMLElement'},
  {tag: 'aside', interface: 'HTMLElement'},
  {tag: 'audio', interface: 'HTMLAudioElement'},
  {tag: 'b', interface: 'HTMLElement'},
  {tag: 'base', interface: 'HTMLBaseElement'},
  {tag: 'bdi', interface: 'HTMLElement'},
  {tag: 'bdo', interface: 'HTMLElement'},
  {tag: 'blockquote', interface: 'HTMLQuoteElement'},
  {tag: 'body', interface: 'HTMLBodyElement', parsing: 'document'},
  {tag: 'br', interface: 'HTMLBRElement'},
  {tag: 'button', interface: 'HTMLButtonElement'},
  {tag: 'canvas', interface: 'HTMLCanvasElement'},
  {tag: 'caption', interface: 'HTMLTableCaptionElement', parsing: 'table'},
  {tag: 'cite', interface: 'HTMLElement'},
  {tag: 'code', interface: 'HTMLElement'},
  {tag: 'col', interface: 'HTMLTableColElement', parsing: 'table'},
  {tag: 'colgroup', interface: 'HTMLTableColElement', parsing: 'table'},
  {tag: 'data', interface: 'HTMLDataElement'},
  {tag: 'dd', interface: 'HTMLElement'},
  {tag: 'del', interface: 'HTMLModElement'},
  {tag: 'details', interface: 'HTMLDetailsElement'},
  {tag: 'dfn', interface: 'HTMLElement'},
  {tag: 'div', interface: 'HTMLDivElement'},
  {tag: 'dl', interface: 'HTMLDListElement'},
  {tag: 'dt', interface: 'HTMLElement'},
  {tag: 'em', interface: 'HTMLElement'},
  {tag: 'embed', interface: 'HTMLEmbedElement'},
  {tag: 'fieldset', interface: 'HTMLFieldSetElement'},
  {tag: 'figcaption', interface: 'HTMLElement'},
  {tag: 'figure', interface: 'HTMLElement'},
  {tag: 'footer', interface: 'HTMLElement'},
  {tag: 'form', interface: 'HTMLFormElement'},
  {tag: 'h1', interface: 'HTMLHeadingElement'},
  {tag: 'h2', interface: 'HTMLHeadingElement'},
  {tag: 'h3', interface: 'HTMLHeadingElement'},
  {tag: 'h4', interface: 'HTMLHeadingElement'},
  {tag: 'h5', interface: 'HTMLHeadingElement'},
  {tag: 'h6', interface: 'HTMLHeadingElement'},
  {tag: 'header', interface: 'HTMLElement'},
  {tag: 'hgroup', interface: 'HTMLElement'},
  {tag: 'hr', interface: 'HTMLHRElement'},
  {tag: 'html', interface: 'HTMLHtmlElement', parsing: 'document'},
  {tag: 'i', interface: 'HTMLElement'},
  {tag: 'iframe', interface: 'HTMLIFrameElement'},
  {tag: 'img', interface: 'HTMLImageElement'},
  {tag: 'input', interface: 'HTMLInputElement'},
  {tag: 'ins', interface: 'HTMLModElement'},
  {tag: 'kbd', interface: 'HTMLElement'},
  {tag: 'label', interface: 'HTMLLabelElement'},
  {tag: 'legend', interface: 'HTMLLegendElement'},
  {tag: 'li', interface: 'HTMLLIElement'},
  {tag: 'link', interface: 'HTMLLinkElement'},
  {tag: 'main', interface: 'HTMLElement'},
  {tag: 'map', interface: 'HTMLMapElement'},
  {tag: 'mark', interface: 'HTMLElement'},
  {tag: 'menu', interface: 'HTMLMenuElement'},
  {tag: 'meta', interface: 'HTMLMetaElement'},
  {tag: 'meter', interface: 'HTMLMeterElement'},
  {tag: 'nav', interface: 'HTMLElement'},
  {tag: 'noscript', interface: 'HTMLElement'},
  {tag: 'object', interface: 'HTMLObjectElement'},
  {tag: 'ol', interface: 'HTMLOListElement'},
  {tag: 'optgroup', interface: 'HTMLOptGroupElement'},
  {tag: 'option', interface: 'HTMLOptionElement'},
  {tag: 'output', interface: 'HTMLOutputElement'},
  {tag: 'p', interface: 'HTMLParagraphElement'},
  {tag: 'param', interface: 'HTMLParamElement'},
  {tag: 'picture', interface: 'HTMLPictureElement'},
  {tag: 'pre', interface: 'HTMLPreElement'},
  {tag: 'progress', interface: 'HTMLProgressElement'},
  {tag: 'q', interface: 'HTMLQuoteElement'},
  {tag: 'rp', interface: 'HTMLElement'},
  {tag: 'rt', interface: 'HTMLElement'},
  {tag: 'ruby', interface: 'HTMLElement'},
  {tag: 's', interface: 'HTMLElement'},
  {tag: 'samp', interface: 'HTMLElement'},
  {tag: 'script', interface: 'HTMLScriptElement'},
  {tag: 'section', interface: 'HTMLElement'},
  {tag: 'select', interface: 'HTMLSelectElement'},
  {tag: 'small', interface: 'HTMLElement'},
  {tag: 'source', interface: 'HTMLSourceElement'},
  {tag: 'span', interface: 'HTMLSpanElement'},
  {tag: 'strong', interface: 'HTMLElement'},
  {tag: 'style', interface: 'HTMLStyleElement'},
  {tag: 'sub', interface: 'HTMLElement'},
  {tag: 'summary', interface: 'HTMLElement'},
  {tag: 'sup', interface: 'HTMLElement'},
  {tag: 'table', interface: 'HTMLTableElement'},
  {tag: 'tbody', interface: 'HTMLTableSectionElement', parsing: 'table'},
  {tag: 'td', interface: 'HTMLTableCellElement', parsing: 'table'},
  {tag: 'template', interface: 'HTMLTemplateElement'},
  {tag: 'textarea', interface: 'HTMLTextAreaElement'},
  {tag: 'tfoot', interface: 'HTMLTableSectionElement', parsing: 'table'},
  {tag: 'th', interface: 'HTMLTableCellElement', parsing: 'table'},
  {tag: 'thead', interface: 'HTMLTableSectionElement', parsing: 'table'},
  {tag: 'time', interface: 'HTMLTimeElement'},
  {tag: 'title', interface: 'HTMLTitleElement'},
  {tag: 'tr', interface: 'HTMLTableRowElement', parsing: 'table'},
  {tag: 'track', interface: 'HTMLTrackElement'},
  {tag: 'u', interface: 'HTMLElement'},
  {tag: 'ul', interface: 'HTMLUListElement'},
  {tag: 'var', interface: 'HTMLElement'},
  {tag: 'video', interface: 'HTMLVideoElement'},
  {tag: 'wbr', interface: 'HTMLElement'},
];
// HTMLDataListElement isn't implemented by all major browsers yet.
if (window.HTMLDataListElement) {
  testData.push({tag: 'datalist', interface: 'HTMLDataListElement'});
}
// HTMLDialogElement isn't implemented by all major browsers yet.
if (window.HTMLDialogElement) {
  testData.push({tag: 'dialog', interface: 'HTMLDialogElement'});
}
// HTMLSlotElement isn't implemented by all major browsers yet.
if (window.HTMLSlotElement) {
  testData.push({tag: 'slot', interface: 'HTMLSlotElement'});
}

for (const t of testData) {
  test(() => {
    let name = 'my-' + t.tag;
    let klass = eval(`(class extends ${t.interface} {})`);
    customElements.define(name, klass, { extends: t.tag });

    test(() => {
      let customized = new klass();
      assert_equals(customized.constructor, klass);
      assert_equals(customized.cloneNode().constructor, klass,
                    'Cloning a customized built-in element should succeed.');
    }, `${t.tag}: Operator 'new' should instantiate a customized built-in element`);

    test(() => {
      let customized = document.createElement(t.tag, { is: name });
      assert_equals(customized.constructor, klass);
      assert_equals(customized.cloneNode().constructor, klass,
                    'Cloning a customized built-in element should succeed.');
    }, `${t.tag}: document.createElement() should instantiate a customized built-in element`);

    if (t.parsing == 'document') {
      let test = async_test(`${t.tag}: document parser should instantiate a customized built-in element`);
      window.addEventListener('load', test.step_func_done(() => {
        let customized = document.querySelector(t.tag);
        assert_equals(customized.constructor, klass);
        assert_equals(customized.cloneNode().constructor, klass,
                      'Cloning a customized built-in element should succeed.');
      }));
      return;
    }
    test(() => {
      let container = document.getElementById('container');
      if (t.parsing == 'table') {
        container.innerHTML = `<table><${t.tag} is="${name}" id="${name}">`;
      } else {
        container.innerHTML = `<${t.tag} is="${name}" id="${name}">`;
      }
      let customized = document.getElementById(name);
      assert_equals(customized.constructor, klass);
      assert_equals(customized.cloneNode().constructor, klass,
                    'Cloning a customized built-in element should succeed.');
    }, `${t.tag}: innerHTML should instantiate a customized built-in element`);

  }, `${t.tag}: Define a customized built-in element`);
}
</script>
</body>
</html>