<!DOCTYPE html>
<html>
<head>
<title>Shadow DOM Test: A_04_01_11</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/#upper-boundary-encapsulation">
<meta name="assert" content="Upper-boundary encapsulation:The style sheets, represented by the shadow nodes are not accessible using shadow host document's CSSOM extensions">
<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>
// check that <link> element added to head is not exposed
test(unit(function (ctx) {

    var d = newRenderedHTMLDocument(ctx);
    var initialStyleSheetsCount = d.styleSheets.length;

    var link = d.createElement('link');
    link.setAttribute('rel', 'stylesheet');
    d.body.appendChild(link);

    //create Shadow root
    var root = d.createElement('div');
    d.body.appendChild(root);
    var s = root.attachShadow({mode: 'open'});

    s.appendChild(link);

    assert_equals(d.styleSheets.length, initialStyleSheetsCount, 'stylesheet link elements in shadow DOM must not be ' +
            'exposed via the document.styleSheets collection');


}), 'A_04_01_11_T2');
</script>
</body>
</html>
