r,
                "el.attributes has an Attr for property name " + propName);
  }
}, "Own property names should only include all-lowercase qualified names for an HTML element in an HTML document");

test(function() {
  var el = document.createElementNS("", "div");
  el.setAttributeNS("foo", "A:B", "");
  el.setAttributeNS("bar", "c:D", "");
  el.setAttributeNS("baz", "e:F", "");
  el.setAttributeNS("qux", "g:h", "");
  el.setAttributeNS("", "I", "");
  el.setAttributeNS("", "j", "");
  assert_array_equals(