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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-backgrounds/animations/background-color-animation-pseudo-element.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html class="reftest-wait">
<link rel="match" href="background-color-animation-pseudo-element-ref.html">
<style>
body {
padding: 0;
margin: 0;
}
.block, .block:after, .block:before {
width: 100px;
height: 100px;
padding: 0;
display: inline-block;
/* Use a long transition that can be stalled at the midpoint. */
transition: background 100000s cubic-bezier(0,1,1,0);
}
.block {
background: rgb(0, 254, 0);
margin-left: 120px;
margin-top: 10px;
position: relative;
}
.block:after {
background: rgb(0, 0, 254);
content: "";
position: absolute;
left: 110px;
}
.block:before {
background: rgb(254, 0, 0);
content: "";
position: absolute;
left: -110px;
}
.block.tweak, .block.tweak:before, .block.tweak:after {
background: black;
}
</style>
<body>
<div class="block"></div>
</body>
<script src="/common/reftest-wait.js"></script>
<script src="../../../web-animations/testcommon.js"></script>
<script>
window.onload = async () => {
await waitForAnimationFrames(2);
const promises = [];
document.querySelector('.block').classList.add('tweak');
document.getAnimations().forEach(anim => {
anim.currentTime = anim.effect.getTiming().duration/2;
promises.push(anim.ready);
});
Promise.all(promises).then(() => {
waitForAnimationFrames(2).then(() => {
takeScreenshot();
});
});
};
</script>
</html>