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+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transitions: invalidating VT pseudo elements renders correctly</title>
+<link rel="help" href="https://github.com/WICG/view-transitions">
+<link rel="author" href="mailto:bokan@chromium.org">
+<link rel="match" href="pseudo-rendering-invalidation-ref.html">
+<meta name="fuzzy" content="pseudo-rendering-invalidation-ref.html:0-20;0-300">
+
+<script src="/common/reftest-wait.js"></script>
+<style>
+:root {
+ view-transition-name: none;
+ background-color: red;
+}
+
+div {
+ position: absolute;
+ left: 0px;
+ top: 600px;
+ width: 100px;
+ height: 100px;
+
+ display: flex;
+ justify-content: center;
+ flex-direction: column;
+ align-items: center;
+
+ background: darkseagreen;
+}
+
+::view-transition-group(*) {
+ animation-duration: 50s;
+}
+
+::view-transition {
+ background-color: limegreen;
+}
+
+::view-transition-new(new) {
+ animation: none;
+ opacity: 1;
+}
+::view-transition-old(new) {
+ animation: none;
+ opacity: 0;
+}
+
+::view-transition-new(old) {
+ animation: none;
+ opacity: 0;
+}
+::view-transition-old(old) {
+ animation: none;
+ opacity: 1;
+}
+
+.invalidateRoot::view-transition {
+ /* Making view-transition `display: none` will abort the transition. Changing
+ it to position: static (at least in Chrome) will cause it to rebuild its
+ layout tree. */
+ position: static;
+}
+
+.invalidateGroup::view-transition-group(group) {
+ display: none;
+}
+
+.invalidateImagePair::view-transition-image-pair(imagepair) {
+ display: none;
+}
+
+.invalidateNew::view-transition-new(new) {
+ display: none;
+}
+
+.invalidateOld::view-transition-old(old) {
+ display: none;
+}
+
+</style>
+
+<div style="left: 0px; top: 100px; view-transition-name:group;">Group</div>
+<div style="left: 150px; top: 100px; view-transition-name:imagepair;">Image-Pair</div>
+<div style="left: 0px; top: 250px; view-transition-name:old;">Old</div>
+<div style="left: 150px; top: 250px; view-transition-name:new;">New</div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+async function rAF() {
+ return new Promise(resolve => requestAnimationFrame(resolve));
+}
+
+async function performInvalidations() {
+ await rAF();
+ await rAF();
+
+ const docClassList = document.documentElement.classList;
+ const classNames = [
+ 'invalidateRoot', // Invalidates ::view-transition
+ 'invalidateGroup', // Invalidates ::view-transition-group
+ 'invalidateImagePair', // Invalidates ::view-transition-image-pair
+ 'invalidateOld', // Invalidates ::view-transition-old
+ 'invalidateNew' // Invalidates ::view-transition-new
+ ];
+
+ for (let className of classNames) {
+ document.documentElement.classList.add(className);
+ await rAF();
+ document.documentElement.classList.remove(className);
+ await rAF();
+ }
+}
+
+// This test ensures each of the view-transition pseudos is able to be
+// individually recreated after becoming display: none.
+async function runTest() {
+ let transition = document.startViewTransition();
+ await transition.ready;
+ await performInvalidations();
+ takeScreenshot();
+}
+
+onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
+</script>
+