navigation-api/navigation-history-entry/entries-across-origins.html

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="resources/is_uuid.js"></script>
<iframe id="i" src="/common/blank.html"></iframe>
<script>
async_test(t => {
  window.onload = t.step_func(() => {
    let start_key = i.contentWindow.navigation.currentEntry.key;
    let start_id = i.contentWindow.navigation.currentEntry.id;

    let cross_origin_url = new URL("resources/post-entries-length-to-top.html", location.href);
    cross_origin_url.hostname = get_host_info().REMOTE_HOST;
    i.contentWindow.location.assign(cross_origin_url.href);

    window.onmessage = t.step_func(e => {
      assert_equals(e.data, 1);

      i.src = "/common/blank.html?2";
      i.onload = t.step_func_done(() => {
        let entries = i.contentWindow.navigation.entries();
        assert_equals(entries.length, 1);
        assert_equals(new URL(entries[0].url).search, "?2");
        assert_not_equals(entries[0].key, start_key);
        assert_not_equals(entries[0].id, start_id);
        assert_true(isUUID(entries[0].key));
        assert_true(isUUID(entries[0].id));
      });
    });
  });
}, "navigation.entries() should only contain entries that are both same-origin and contiguous");
</script>