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<!DOCTYPE html>
<meta charset="UTF-8">
<title>content animation</title>
<link rel="help" href="https://drafts.csswg.org/css-content/#content-property">
<meta name="test" content="box-shadow supports animation">
<link rel="author" href="mailto:graouts@apple.com" title="Antoine Quint">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.target::after {
content: "default";
}
@keyframes content-animation {
from { content: "from" }
to { content: "to" }
}
.target.animated::after {
animation: content-animation 1s paused linear forwards;
}
</style>
<body>
<div class="target"></div>
<script>
test(function() {
const target = document.querySelector(".target");
const style = getComputedStyle(target, "::after");
assert_equals(style.content, '"default"', "Before the animation is applied.");
target.classList.add("animated");
const animation = target.getAnimations({ subtree: true })[0];
const testContentAtTime = (time, expected) => {
animation.currentTime = time;
assert_equals(style.content, `"${expected}"`, `Check the animated value at time = ${time}ms`);
};
testContentAtTime(0, 'from');
testContentAtTime(499, 'from');
testContentAtTime(500, 'to');
testContentAtTime(999, 'to');
testContentAtTime(1000, 'to');
}, "The content property can be animated with a discrete animation type.");
</script>
</body>
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