nk.html?1");
  i.onload = t.step_func_done(() => {
    const iframeURL = new URL(i.contentWindow.navigation.currentEntry.url);
    assert_equals(iframeURL.pathname, "/common/blank.html");
    assert_equals(iframeURL.search, "?1");
  });
}, `navigate() from <iframe> still on initial about:blank works`);
</script>
