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<!DOCTYPE html>
<html>
<head>
<title>DOM and Shadow DOM: Document.prototype.importNode</title>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<meta name="assert" content="The importNode(node, deep) method must throw a NotSupportedError exception if node is a shadow root.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="log"></div>
<script>
function testImportNode(mode) {
test(function () {
var newDocument = document.implementation.createHTMLDocument();
assert_throws_dom('NotSupportedError', function () {
var element = document.createElement('div');
var shadowRoot = element.attachShadow({mode: mode});
newDocument.importNode(shadowRoot);
});
}, 'importNode on a shadow root in ' + mode + ' mode must throw a NotSupportedError');
}
testImportNode('open');
testImportNode('closed');
</script>
</body>
</html>