heading.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /css/selectors/heading.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>:heading and :heading() pseudo-classes</title>

<link rel="help" href="https://drafts.csswg.org/selectors-5/#headings">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<h1 data-expect-match="1"></h1>

<h2 data-expect-match="2"></h2>

<h3 data-expect-match="3"></h3>

<h4 data-expect-match="4"></h4>

<h5 data-expect-match="5"></h5>

<h6 data-expect-match="6"></h6>

<h7 data-expect-match=""></h7>

<h8 data-expect-match=""></h8>

<h9 data-expect-match=""></h9>

<h0 data-expect-match=""></h0>

<h1 data-expect-match="1" aria-level="2"></h1>

<section><h1 data-expect-match="1"></h1></section>

<hgroup data-expect-match=""></hgroup>

<p role="heading" aria-level="1" data-expect-match=""></p>

<script>

const els = document.querySelectorAll('[data-expect-match]');

const tests = [

  {args: ['1'], match: [1]},

  {args: ['2'], match: [2]},

  {args: ['3'], match: [3]},

  {args: ['4'], match: [4]},

  {args: ['5'], match: [5]},

  {args: ['6'], match: [6]},

  {args: ['7'], match: []},

  {args: ['8'], match: []},

  {args: ['9'], match: []},

  {args: ['0'], match: []},

  {args: ['0', '1', '2'], match: [1, 2]},

  {args: ['6', '7'], match: [6]},

];

for (const el of els) {

  const testName = el.outerHTML + (el.parentNode === document.body ? '' : ' in ' + el.parentNode.localName);

  test(() => {

    const matches = el.matches(':heading');

    const shouldMatch = el.dataset.expectMatch !== "";

    assert_equals(matches, shouldMatch);

  }, testName + ' :heading');

  for (const t of tests) {

    const selector = `:heading(${t.args.join(', ')})`;

    test(() => {

      const matches = el.matches(selector);

      const expectMatchLevel = parseInt(el.dataset.expectMatch, 10);

      const shouldMatch = t.match.includes(expectMatchLevel);

      assert_equals(matches, shouldMatch, selector);

    }, testName + ' ' + selector);

</script>