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<!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>
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