rootNode.html
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<title>Node.prototype.getRootNode()</title>
<link rel="help" href="https://dom.spec.whatwg.org/#dom-node-getrootnode">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
test(function () {
var element = document.createElement('div');
assert_equals(element.getRootNode(), element, 'getRootNode() on an element without a parent must return the element itself');
var text = document.createTextNode('');
assert_equals(text.getRootNode(), text, 'getRootNode() on a text node without a parent must return the text node itself');
var processingInstruction = document.createProcessingInstruction('target', 'data');
assert_equals(processingInstruction.getRootNode(), processingInstruction, 'getRootNode() on a processing instruction node without a parent must return the processing instruction node itself');
assert_equals(document.getRootNode(), document, 'getRootNode() on a document node must return the document itself');
}, 'getRootNode() must return the context object when it does not have any parent');
test(function () {
var parent = document.createElement('div');
var element = document.createElement('div');
parent.appendChild(element);
assert_equals(element.getRootNode(), parent, 'getRootNode() on an element with a single ancestor must return the parent node');
var text = document.createTextNode('');
parent.appendChild(text);
assert_equals(text.getRootNode(), parent, 'getRootNode() on a text node with a single ancestor must return the parent node');
var processingInstruction = document.createProcessingInstruction('target', 'data');
parent.appendChild(processingInstruction)
assert_equals(processingInstruction.getRootNode(), parent, 'getRootNode() on a processing instruction node with a single ancestor must return the parent node');
}, 'getRootNode() must return the parent node of the context object when the context object has a single ancestor not in a document');
test(function () {
var parent = document.createElement('div');
document.body.appendChild(parent);
var element = document.createElement('div');
parent.appendChild(element);
assert_equals(element.getRootNode(), document, 'getRootNode() on an element inside a document must return the document');
var text = document.createTextNode('');
parent.appendChild(text);
assert_equals(text.getRootNode(), document, 'getRootNode() on a text node inside a document must return the document');
var processingInstruction = document.createProcessingInstruction('target', 'data');
parent.appendChild(processingInstruction)
assert_equals(processingInstruction.getRootNode(), document, 'getRootNode() on a processing instruction node inside a document must return the document');
}, 'getRootNode() must return the document when a node is in document');
test(function () {
var fragment = document.createDocumentFragment();
var parent = document.createElement('div');
fragment.appendChild(parent);
var element = document.createElement('div');
parent.appendChild(element);
assert_equals(element.getRootNode(), fragment, 'getRootNode() on an element inside a document fragment must return the fragment');
var text = document.createTextNode('');
parent.appendChild(text);
assert_equals(text.getRootNode(), fragment, 'getRootNode() on a text node inside a document fragment must return the fragment');
var processingInstruction = document.createProcessingInstruction('target', 'data');
parent.appendChild(processingInstruction)
assert_equals(processingInstruction.getRootNode(), fragment,
'getRootNode() on a processing instruction node inside a document fragment must return the fragment');
}, 'getRootNode() must return a document fragment when a node is in the fragment');
</script>
</body>
</html>