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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-animations/animation-css-variable-dependent-property.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Animations: Dependent property updates correctly when animating a declared custom property</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/testcommon.js"></script>
<style>
@property --c {
syntax: "<color>";
inherits: true;
initial-value: black;
}
@keyframes color-shift {
0% {
--c: black;
}
100% {
--c: white;
}
}
#target {
color: var(--c);
animation: color-shift 1s linear 1 forwards paused
}
</style>
<div id=target></div>
<div id="log"></div>
<script>
test(t => {
const animation = target.getAnimations()[0];
assert_equals(
getComputedStyle(target).color,
'rgb(0, 0, 0)'
);
animation.currentTime = 500;
assert_equals(
getComputedStyle(target).color,
'rgb(128, 128, 128)'
);
animation.currentTime = 1000;
assert_equals(
getComputedStyle(target).color,
'rgb(255, 255, 255)'
);
}, 'Dependent property updates correctly');
</script>