b', link.childNodes[link.childNodes.length - 1].localName);
</script>

<script id=isDefaultNamespace>
  // TODO: does not seems to work
  //   link.isDefaultNamespace('')", "true" },
  testing.expectEqual(false, link.isDefaultNamespace('false'));
</script>

<script id=isEqualNode>
  let equal1 = document.createElement('a');
  let equal2 = document.createElement('a');
  equal1.textContent = 'is equal';
  equal2.textContent = 'is equal';
  // TODO: does not seems to work
  // testing.expectEqual(true, equal1.