shared-struct-postMessage-no-coop-coep.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
// Shared structs and shared values require crossOriginIsolated to be
// postMessaged, just like SABs.
test(() => {
  const Box = new SharedStructType(['payload']);
  let box = new Box();
  box.payload = 'foo';
  assert_throws_dom("DataCloneError", () => postMessage(box));
});
</script>

chromium/third_party/blink/web_tests/wpt_internal/js/shared_memory/shared-struct-postMessage-no-coop-coep.html