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52 lines
1.3 KiB
HTML
52 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<title>@scope - deeply nested</title>
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<link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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main * { background-color: black; }
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</style>
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<main id=main></main>
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<script>
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// @scope (.s0) { @scope (.s1) { ... span {} ... } }
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function createStyleSheet(length, i) {
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if (length == 0)
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return 'span { background-color: green; }';
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if (i === undefined)
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i = 0;
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return `
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@scope (.s${i}) {
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${createStyleSheet(length - 1, i + 1)}
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}
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`.trim();
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}
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// <div class=s0><div class=s1>...<span/>...</div></div>
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function createElementChain(length, i) {
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if (length < 1)
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throw 'Invalid length';
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if (i === undefined)
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i = 0;
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let e = document.createElement('div');
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e.classList.add(`s${i}`);
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if (length > 1)
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e.append(createElementChain(length - 1, i + 1));
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else
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e.append(document.createElement('span'));
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return e;
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}
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const COUNT = 90;
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let style_node = document.createElement('style');
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style_node.textContent = createStyleSheet(COUNT);
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main.append(style_node);
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main.append(createElementChain(COUNT));
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test(() => {
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for (let span of main.querySelectorAll('span'))
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assert_equals(getComputedStyle(span).backgroundColor, 'rgb(0, 128, 0)');
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}, 'Deep @scope nesting');
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</script>
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