xt' + innerHTML;
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with context object itself as the argument.');

    test(function() {
        var parent = document.createElement('div')
        var x = document.createElement('x');
        parent.appendChild(x);
        parent.appendChild(child);
        child.after(child, x);
        var expected = innerHTML + '<x></x>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with context object itself a