1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fenced-frame/resources/navigate-ancestor-from-nested-fenced-frame.https.html b/testing/web-platform/tests/fenced-frame/resources/navigate-ancestor-from-nested-fenced-frame.https.html
new file mode 100644
index 0000000000..74800b969f
--- /dev/null
+++ b/testing/web-platform/tests/fenced-frame/resources/navigate-ancestor-from-nested-fenced-frame.https.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<title>Navigate ancestor helper</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="utils.js"></script>
+
+<body>
+<script>
+(async () => {
+  // This document is loaded into a fenced frame by
+  // `navigate-ancestor-test-runner.https.html`. It creates a nested fenced
+  // frame and navigates it to `navigate-ancestor-helper.https.html`.
+
+  // - navigate_ancestor_key:
+  // Sent by `navigate-ancestor-destination.https.html`. We listen to it, and
+  // report back to our embedder that it loaded correctly and did not navigate
+  // *this* frame.
+  // - navigate_ancestor_from_nested_key:
+  // Sent by us to our embedder to indicate (depending on the message) either:
+  //   - PASS: The nested fenced frame was navigated correctly when it tried to
+  //           navigate its ancestor (parent or top) frame
+  //   - FAIL: When the nested fenced frame tried to navigate its ancestor
+  //           frame, it actually navigated *this frame*, which is wrong
+  const [navigate_ancestor_key, navigate_ancestor_from_nested_key,
+      ancestor_type] = parseKeylist();
+
+  window.onbeforeunload = e => {
+    writeValueToServer(navigate_ancestor_from_nested_key,
+                       `FAIL nested fenced frame ${ancestor_type}`);
+  }
+
+  attachFencedFrame(generateURL(`navigate-ancestor-helper.https.html`,
+      [navigate_ancestor_key, ancestor_type]));
+  await nextValueFromServer(navigate_ancestor_key);
+  window.onbeforeunload = null;
+  writeValueToServer(navigate_ancestor_from_nested_key, "PASS");
+})();
+</script>
+</body>