navigation-api/updateCurrentEntry-method/unserializable.html

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="iframe" src="/common/blank.html"></iframe>

<script>
setup({ explicit_done: true });

window.onload = () => {
  test(() => {
    assert_throws_dom("DataCloneError", iframe.contentWindow.DOMException, () => {
      iframe.contentWindow.navigation.updateCurrentEntry({ state: new WritableStream() });
    });
    assert_equals(navigation.currentEntry.getState(), undefined);
  }, "updateCurrentEntry() must throw if state is unserializable (WritableStream)");

  test(() => {
    // See https://github.com/whatwg/html/issues/5380 for why not `new SharedArrayBuffer()`
    const buffer = new WebAssembly.Memory({ shared:true, initial:1, maximum:1 }).buffer;

    assert_throws_dom("DataCloneError", iframe.contentWindow.DOMException, () => {
      iframe.contentWindow.navigation.updateCurrentEntry({ state: buffer });
    });
    assert_equals(navigation.currentEntry.getState(), undefined);
  }, "updateCurrentEntry() must throw if state is unserializable (SharedArrayBuffer)");

  done();
};
</script>