1 files changed, 54 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-view-transitions/no-root-capture.html b/testing/web-platform/tests/css/css-view-transitions/no-root-capture.html
new file mode 100644
index 0000000000..9e16d1e447
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/no-root-capture.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transitions: shared element with overflow</title>
+<link rel="help" href="https://github.com/WICG/view-transitions">
+<link rel="author" href="mailto:vmpstr@chromium.org">
+<link rel="match" href="no-root-capture-ref.html">
+<script src="/common/reftest-wait.js"></script>
+<style>
+:root { view-transition-name: none; }
+.target {
+  width: 100px;
+  height: 100px;
+  contain: paint;
+  background: blue;
+  overflow-clip-margin: 50px;
+  view-transition-name: target;
+}
+.child {
+  width: 200px;
+  height: 200px;
+  position: relative;
+  top: 50px;
+  left: 50px;
+  background: green;
+}
+
+html::view-transition-group(target) { animation-duration: 300s; }
+html::view-transition-new(target) { animation: unset; opacity: 0; }
+html::view-transition-old(target) {
+  animation: unset;
+  opacity: 1;
+}
+
+/* None of these should apply, so make everything red if it does */
+html::view-transition-group(root) { animation: unset; opacity: 1; background: red; }
+html::view-transition-image-pair(root) { visibility: hidden }
+</style>
+
+This text should appear unmodified, since the root isn't captured.
+<div class=target>
+  <div class=child>
+  </div>
+</div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+async function runTest() {
+  document.startViewTransition(() =>
+    requestAnimationFrame(() => requestAnimationFrame(takeScreenshot)));
+}
+onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
+</script>
+