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<head>
<title>Shadow DOM Test: A_10_02_02_02</title>
<link rel="author" title="Sergey G. Grekhov" href="mailto:sgrekhov@unipro.ru">
<link rel="help" href="http://www.w3.org/TR/2013/WD-shadow-dom-20130514/#shadow-aware-methods">
<meta name="assert" content="Extensions to Element Interface: attachShadow method">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../../../../html/resources/common.js"></script>
<script src="../../../../resources/shadow-dom-utils.js"></script>
</head>
<body>
<div id="log"></div>
<script>
test(unit(function (ctx) {

    var d = newRenderedHTMLDocument(ctx);

    var host = d.createElement('div');
    d.body.appendChild(host);

    var span = d.createElement('span');
    span.innerHTML = 'Some text';
    host.appendChild(span);

    var s = host.attachShadow({mode: 'open'});

    // span should become invisible as shadow root content
    assert_equals(span.offsetTop, 0, 'attachShadow() method should establish ' +
            'the context object as the shadow host of the ShadowRoot object');

}), 'A_10_02_02_02_T01');
</script>
</body>
</html>
