ype.slice.call(qsa);
      assert.deepEqual(qsa,[srFirst, content, srLast]);
    });

    test('contains', function() {
      let srFirst = el.shadowRoot.firstChild;
      assert.isTrue(ShadyDOM.nativeMethods.contains.call(el, srFirst));
      assert.isTrue(ShadyDOM.nativeMethods.contains.call(document.documentElement, srFirst));
    });
  });

</script>

</body>
</html>
