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  • This WPT test may be referenced by the following Test IDs:
<!DOCTYPE html>
<html>
<head>
<title>Shadow DOM Test: A_10_01_02_01</title>
<link rel="author" title="Sergey G. Grekhov" href="mailto:sgrekhov@unipro.ru">
<meta name="assert" content="ShadowRoot Object: HTMLElement getElementById(DOMString elementId) method">
<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 el = d.createElement('div');
d.body.appendChild(el);
var s = el.attachShadow({mode: 'open'});
var child = d.createElement('span');
child.setAttribute('id', 'span_id');
s.appendChild(child);
assert_true(s.getElementById('span_id') != null, 'Point 1: ShadowRoot getElementById() ' +
'method should return child element');
assert_equals(s.getElementById('span_id').getAttribute('id'), 'span_id', 'Point 2: ' +
'ShadowRoot getElementById() method should return child element');
}, 'A_10_01_02_01_T01');
test(function () {
var d = newHTMLDocument();
var el = d.createElement('div');
d.body.appendChild(el);
var s = el.attachShadow({mode: 'open'});
assert_true(s.getElementById('span_id') == null, ' ShadowRoot getElementById() ' +
'method should return null if matching element not found');
}, 'A_10_01_02_01_T02');
</script>
</body>
</html>