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<!DOCTYPE html>
<html>
<head>
<title>DOM: cloneNode(deep)</title>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<meta name="assert" content="If context object is a shadow root, then it must throw a NotSupportedError.">
<link rel="help" href="https://dom.spec.whatwg.org/#dom-node-clonenode">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="log"></div>
<script>

function testCloneNode(mode) {
    test(function () {
        assert_throws_dom('NotSupportedError', function () {
            var element = document.createElement('div');
            var shadowRoot = element.attachShadow({mode: mode});
            shadowRoot.cloneNode(false);
        }, 'cloneNode(false) on a shadow root in ' + mode + ' mode must throw a NotSupportedError');

        assert_throws_dom('NotSupportedError', function () {
            var element = document.createElement('div');
            var shadowRoot = element.attachShadow({mode: mode});
            shadowRoot.cloneNode(false);
        }, 'cloneNode(true) on a closed shadow root must throw a NotSupportedError');

    }, 'cloneNode on a shadow root in ' + mode + ' mode must throw a NotSupportedError');
}

testCloneNode('open');
testCloneNode('closed');

test(function () {
    var element = document.createElement('div');
    var shadowRoot = element.attachShadow({mode: 'open'});

    assert_equals(element.cloneNode(false).shadowRoot, null, 'cloneNode(false) on an element with an open shadow root should not clone its shadow root');
    assert_equals(element.cloneNode(true).shadowRoot, null, 'cloneNode(true) on an element with an open shadow root should not clone its shadow root');
}, 'cloneNode on an element with an open shadow root should not clone its shadow root');

test(function () {
    var element = document.createElement('div');
    var shadowRoot = element.attachShadow({mode: 'closed'});

    assert_true(element.cloneNode(false).attachShadow({mode: 'closed'}) instanceof ShadowRoot,
        'An element returned by cloneNode(false) on an element with a closed shadow root should allow attachShadow');

    assert_true(element.cloneNode(true).attachShadow({mode: 'closed'}) instanceof ShadowRoot,
        'An element returned by cloneNode(true) on an element with a closed shadow root should allow attachShadow');

}, 'cloneNode on an element with a closed shadow root should not clone its shadow root');

</script>
</body>
</html>