1 files changed, 63 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-view-transitions/new-content-scaling.html b/testing/web-platform/tests/css/css-view-transitions/new-content-scaling.html
new file mode 100644
index 0000000000..9fc70e39af
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/new-content-scaling.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>Shared transitions: display content in a pseudo with proper scaling</title>
+<link rel="help" href="https://github.com/WICG/view-transitions">
+<link rel="author" href="mailto:vmpstr@chromium.org">
+<link rel="match" href="new-content-scaling-ref.html">
+<meta name="fuzzy" content="new-content-scaling-ref.html:maxDifference=0-16;totalPixels=0-400">
+<script src="/common/reftest-wait.js"></script>
+<style>
+.shared {
+  view-transition-name: shared;
+  contain: paint;
+}
+.src {
+  position: relative;
+  width: 100px;
+  height: 100px;
+}
+.inner {
+  position: absolute;
+  inset: 20px;
+  background: green;
+}
+.dst {
+  position: relative;
+  width: 500px;
+  height: 500px;
+  border: 5px solid blue;
+  box-sizing: border-box;
+}
+
+html::view-transition-group(shared) {
+  animation-delay: 500s;
+}
+
+html::view-transition-new(shared) {
+  animation: unset;
+  opacity: 1;
+}
+html::view-transition-old(shared) {
+  animation: unset;
+  opacity: 0;
+}
+
+html::view-transition-group(root) { animation: unset; opacity: 0; }
+html::view-transition { background: lightpink; }
+</style>
+
+<div id=target class="shared src"><div class=inner></div></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+async function runTest() {
+  let t = document.startViewTransition(() => {
+    target.classList.remove("src");
+    target.classList.add("dst");
+    requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
+  });
+}
+onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
+</script>
+