41 lines
1.5 KiB
HTML
41 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<title>Basic :is/:where matching behavior</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<link rel="help" href="https://drafts.csswg.org/selectors-4/#matches">
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<main id=main>
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<div id=a><div id=d></div></div>
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<div id=b><div id=e></div></div>
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<div id=c><div id=f></div></div>
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</main>
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<script>
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function formatElements(elements) {
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return elements.map(e => e.id).sort().join();
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}
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// Test that |selector| returns the given elements in #main.
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function test_selector(selector, expected) {
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test(function() {
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let actual = Array.from(main.querySelectorAll(selector));
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assert_equals(formatElements(actual), formatElements(expected));
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}, `${selector} matches expected elements`);
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}
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test_selector(':is()', []);
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test_selector(':is(#a)', [a]);
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test_selector(':is(#a, #f)', [a, f]);
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test_selector(':is(#a, #c) :where(#a #d, #c #f)', [d, f]);
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test_selector('#c > :is(#c > #f)', [f]);
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test_selector('#c > :is(#b > #f)', []);
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test_selector('#a div:is(#d)', [d]);
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test_selector(':is(div) > div', [d, e, f]);
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test_selector(':is(*) > div', [a, b, c, d, e, f]);
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test_selector(':is(*) div', [a, b, c, d, e, f]);
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test_selector('div > :where(#e, #f)', [e, f]);
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test_selector('div > :where(*)', [d, e, f]);
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test_selector(':is(*) > :where(*)', [a, b, c, d, e, f]);
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test_selector(':is(#a + #b) + :is(#c)', [c]);
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test_selector(':is(#a, #b) + div', [b, c]);
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</script>
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