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mozilla-central/testing/web-platform/tests/shadow-dom/untriaged/shadow-trees/upper-boundary-encapsulation/test-011.html

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Test Info:

This WPT test may be referenced by the following Test IDs:
- /shadow-dom/untriaged/shadow-trees/upper-boundary-encapsulation/test-011.html - WPT Dashboard Interop Dashboard

<!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>