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<!DOCTYPE html>
<meta charset=utf-8>
<title>ParentNode.append</title>
<link rel=help href="https://dom.spec.whatwg.org/#dom-parentnode-append">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="pre-insertion-validation-hierarchy.js"></script>
<script>
preInsertionValidateHierarchy("append");
function test_append(node, nodeName) {
test(function() {
const parent = node.cloneNode();
parent.append();
assert_array_equals(parent.childNodes, []);
}, nodeName + '.append() without any argument, on a parent having no child.');
test(function() {
const parent = node.cloneNode();
parent.append(null);
assert_equals(parent.childNodes[0].textContent, 'null');
}, nodeName + '.append() with null as an argument, on a parent having no child.');
test(function() {
const parent = node.cloneNode();
parent.append(undefined);
assert_equals(parent.childNodes[0].textContent, 'undefined');
}, nodeName + '.append() with undefined as an argument, on a parent having no child.');
test(function() {
const parent = node.cloneNode();
parent.append('text');
assert_equals(parent.childNodes[0].textContent, 'text');
}, nodeName + '.append() with only text as an argument, on a parent having no child.');
test(function() {
const parent = node.cloneNode();
const x = document.createElement('x');
parent.append(x);
assert_array_equals(parent.childNodes, [x]);
}, nodeName + '.append() with only one element as an argument, on a parent having no child.');
test(function() {
const parent = node.cloneNode();
const child = document.createElement('test');
parent.appendChild(child);
parent.append(null);
assert_equals(parent.childNodes[0], child);
assert_equals(parent.childNodes[1].textContent, 'null');
}, nodeName + '.append() with null as an argument, on a parent having a child.');
test(function() {
const parent = node.cloneNode();
const x = document.createElement('x');
const child = document.createElement('test');
parent.appendChild(child);
parent.append(x, 'text');
assert_equals(parent.childNodes[0], child);
assert_equals(parent.childNodes[1], x);
assert_equals(parent.childNodes[2].textContent, 'text');
}, nodeName + '.append() with one element and text as argument, on a parent having a child.');
}
test_append(document.createElement('div'), 'Element');
test_append(document.createDocumentFragment(), 'DocumentFragment');
</script>
</html>
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