<!doctype html>
<meta charset=utf-8>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<script>
function bURL(url, base) {
  return new URL(url, base || "about:blank")
}

function runURLTests(urltests) {
  for(var i = 0, l = urltests.length; i < l; i++) {
    var expected = urltests[i]
    if (typeof expected === "string") continue // skip comments

    test(function() {
      if (expected.failure) {
        assert_throws(new TypeError()