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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /dom/nodes/moveBefore/tentative/continue-css-transition-transform-pseudo.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>Node.moveBefore should preserve CSS transition state on pseudo-elements (transform)</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<section id="old-parent">
<div id="item"></div>
</section>
<section id="new-parent">
</section>
<style>
#item {
width: 100px;
height: 100px;
background: green;
position: absolute;
left: 0;
}
#item::before {
content: "Foo";
width: 100px;
height: 100px;
background: green;
transition: transform 60s steps(1, jump-both);
transform: none;
position: absolute;
}
#item.big::before {
transform: translateX(400px);
}
section {
position: relative;
}
body {
margin-left: 0;
}
</style>
<script>
promise_test(async t => {
const item = document.querySelector("#item");
assert_equals(item.getBoundingClientRect().x, 0);
item.classList.add("big");
await new Promise(resolve => item.addEventListener("transitionstart", resolve));
document.querySelector("#new-parent").moveBefore(item, null);
await new Promise(resolve => requestAnimationFrame(() => resolve()));
assert_not_equals(getComputedStyle(item, "::before").transform, "none");
});
</script>
</body>