<!DOCTYPE html>
<title>Portals API test</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
  <script>
    test(function() {
      assert_true(document.createElement('portal') instanceof HTMLPortalElement);
    }, "portal element exists");
  </script>
</body>
