forked from mirrors/gecko-dev
6d5ca3cb26
Automatic update from web-platform-tests Upstream test for WebKit bug 229437 (https://bugs.webkit.org/show_bug.cgi?id=229437) (#32641) -- wpt-commits: 46a2e3cae12a5a8d6707191804cdd0498f2571f0 wpt-pr: 32641
36 lines
1.4 KiB
HTML
36 lines
1.4 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<title>Changes to @keyframes rules</title>
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<link rel="help" href="https://drafts.csswg.org/css-animations-1/">
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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="support/testcommon.js"></script>
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<div id="log"></div>
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<script>
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'use strict';
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test(t => {
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const div = addDiv(t);
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const originalStyleElement = document.createElement("style");
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originalStyleElement.textContent = '@keyframes anim-custom { from, to { left: 100px } }';
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document.head.appendChild(originalStyleElement);
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t.add_cleanup(() => originalStyleElement.remove());
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div.style.animation = 'anim-custom 100s';
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const computedStyle = getComputedStyle(div);
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assert_equals(computedStyle.left, "100px", "The initial @keyframes rule is applied");
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// Remove the original style element and add a new one with an animation with the same name.
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const newStyleElement = document.createElement("style");
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newStyleElement.textContent = '@keyframes anim-custom { from, to { left: 200px } }';
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originalStyleElement.replaceWith(newStyleElement);
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t.add_cleanup(() => newStyleElement.remove());
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assert_equals(computedStyle.left, "200px", "The new @keyframes rule is applied");
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}, 'Replacing a <style> element with a new <style> element while both containing the different @keyframes rule with the same name dynamically updates running animations.');
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</script>
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