1 files changed, 45 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-view-transitions/no-crash-set-exception.html b/testing/web-platform/tests/css/css-view-transitions/no-crash-set-exception.html
new file mode 100644
index 0000000000..06e519e447
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/no-crash-set-exception.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+<title>View transitions: author styles ignored during prepare</title>
+<link rel="help" href="https://github.com/WICG/view-transitions">
+<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;
+  contain: paint;
+  view-transition-name: shared;
+}
+
+html::view-transition,
+html::view-transition-group(shared),
+html::view-transition-image-pair(shared),
+html::view-transition-old(shared),
+html::view-transition-new(shared) {
+  background: blue;
+}
+</style>
+
+<div></div>
+
+<script>
+function validate_background(pseudoString) {
+  return window.getComputedStyle(document.documentElement, pseudoString).style.background != 'blue';
+}
+
+promise_test(async t => {
+  assert_implements(document.startViewTransition, "Missing document.startViewTransition");
+  return new Promise((resolve, reject) => {
+    document.startViewTransition(() => {
+      resolve();
+      throw 'error';
+    });
+  });
+}, "An exception thrown during a transition shouldn't crash.");
+
+</script>