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<!DOCTYPE html>
<html>
<title>View transitions: computed style on pseudo-element stays in sync with the DOM element</title>
<link rel="help" href="https://www.w3.org/TR/css-view-transitions-1/">
<link rel="author" href="mailto:khushalsagar@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
div {
width: 100px;
height: 100px;
background: blue;
view-transition-name: target;
contain: paint;
}
</style>
<div id=first></div>
<script>
promise_test(async t => {
assert_implements(document.startViewTransition, "Missing document.startViewTransition");
return new Promise(async (resolve, reject) => {
let transition = document.startViewTransition();
await transition.updateCallbackDone;
await transition.ready;
let viewbox = window.getComputedStyle(
document.documentElement, "::view-transition-new(target)").objectViewBox;
assert_equals(viewbox, "none", "incorrect viewbox " + viewbox);
first.style.filter = "blur(5px)";
viewbox = window.getComputedStyle(
document.documentElement, "::view-transition-new(target)").objectViewBox;
assert_equals(viewbox, "none", "incorrect viewbox " + viewbox);
transition.finished.then(resolve, reject);
});
}, "computed style on pseudo-element stays in sync with the DOM element");
</script>
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