1 files changed, 51 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fenced-frame/location-ancestorOrigins.https.html b/testing/web-platform/tests/fenced-frame/location-ancestorOrigins.https.html
new file mode 100644
index 0000000000..f72a668bdc
--- /dev/null
+++ b/testing/web-platform/tests/fenced-frame/location-ancestorOrigins.https.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<title>Test location.ancestorOrigins</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="/common/utils.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+
+<script>
+promise_test(async () => {
+  const location_ao_key = token();
+  const location_ao_ack_key = token();
+
+  // We load the top-level fenced frame in a cross-origin, so that we can
+  // more-completely verify the important cross-origin
+  // `location.ancestorOrigins` case.
+  const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+  const cross_origin_fenced_frame = getRemoteOriginURL(generateURL(
+      'resources/location-ancestorOrigins-inner.https.html',
+      [location_ao_key, location_ao_ack_key]
+  ), https=true);
+  attachFencedFrame(cross_origin_fenced_frame);
+
+  // Get the result for the top-level fenced frame.
+  const fenced_frame_result = await nextValueFromServer(location_ao_key);
+  assert_equals(fenced_frame_result, "", "The top-level fenced frame has the " +
+                                         "right ancestor origins");
+
+  // Write an ACK, so that the fenced frame knows it can send message over the
+  // `window_parent_key` channel again.
+  writeValueToServer(location_ao_ack_key, "ACK");
+
+  // Get the result for the iframe inside the fenced frame.
+  const iframe_in_fenced_frame_result = await nextValueFromServer(location_ao_key);
+  assert_equals(iframe_in_fenced_frame_result, cross_origin, "The iframe " +
+                "inside the top-level fenced frame has the right " +
+                "ancestor origins");
+
+  writeValueToServer(location_ao_ack_key, "ACK");
+
+  // Get the result for the nested fenced frame.
+  const nested_fenced_frame_result = await nextValueFromServer(location_ao_key);
+  assert_equals(nested_fenced_frame_result, "", "The nested fenced frame " +
+                "inside the top-level fenced frame has the right ancestor " +
+                "origins");
+}, "location.ancestorOrigins");
+</script>
+
+</body>