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+<!DOCTYPE html>
+<!--
+Distributed under both the W3C Test Suite License [1] and the W3C
+3-clause BSD License [2]. To contribute to a W3C Test Suite, see the
+policies and contribution forms [3].
+
+[1] http://www.w3.org/Consortium/Legal/2008/04-testsuite-license
+[2] http://www.w3.org/Consortium/Legal/2008/03-bsd-license
+[3] http://www.w3.org/2004/10/27-testcases
+-->
+<html>
+<head>
+<title>Shadow DOM Test: A_10_02_02_01</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 creates new instance of Shadow root object">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../../../../../html/resources/common.js"></script>
+</head>
+<body>
+<div id="log"></div>
+<script>
+test(function () {
+
+    var d = newHTMLDocument();
+
+    var host = d.createElement('div');
+    d.body.appendChild(host);
+
+    var s = host.attachShadow({mode: 'open'});
+
+    assert_true(s instanceof ShadowRoot, 'attachShadow() method should create new instance ' +
+            'of ShadowRoot object');
+
+}, 'A_10_02_02_01_T01');
+</script>
+</body>
+</html>