47 lines
1.5 KiB
HTML
47 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<link rel="author" href="mailto:graouts@apple.com">
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<link rel="help" href="https://drafts.csswg.org/css-animations/">
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<link rel="help" href="https://drafts.csswg.org/selectors/#the-empty-pseudo">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/css/css-animations/support/testcommon.js"></script>
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<div class="container"></div>
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<style>
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.container {
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width: 100px;
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height: 100px;
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background-color: rgb(0, 255, 0);
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}
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.container:empty {
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background-color: rgb(255, 0, 0);
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animation: anim 1s;
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}
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@keyframes anim { }
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</style>
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<script>
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promise_test(async () => {
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const container = document.querySelector(".container");
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const computedStyle = getComputedStyle(container);
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// Check that the :empty rule applies initially.
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assert_equals(computedStyle.backgroundColor, 'rgb(255, 0, 0)',
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'The initial background-color matches the value set by the :empty rule.');
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// Await a couple of frames to let any animation-related style updates happen.
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await waitForAnimationFrames(2);
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// Append a child which should no longer let the :empty rule apply.
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container.appendChild(document.createElement("span"));
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assert_equals(computedStyle.backgroundColor, 'rgb(0, 255, 0)',
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'The background-color after inserting a child into the container no longer matches the value set by the :empty rule.');
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}, 'Setting an "animation" style property on an element does not interfere with the :empty pseudo-class.');
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</script>
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