<!DOCTYPE html>
<meta charset=utf-8>
<title>ChildNode.after</title>
<link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-after">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>

function test_after(child, nodeName, innerHTML) {

    test(function() {
        var parent = document.createElement('div');
        parent.appendChild(child);
        child.after();
        assert_equals(parent.innerHTML, innerHTML);
    }, nodeName + '.after() without any argument.');

    test(function() {
        var parent = document.createElement('div');
        parent.appendChild(child);
        child.after(null);
        var expected = innerHTML + 'null';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with null as an argument.');

    test(function() {
        var parent = document.createElement('div');
        parent.appendChild(child);
        child.after(undefined);
        var expected = innerHTML + 'undefined';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with undefined as an argument.');

    test(function() {
        var parent = document.createElement('div');
        parent.appendChild(child);
        child.after('');
        assert_equals(parent.lastChild.data, '');
    }, nodeName + '.after() with the empty string as an argument.');

    test(function() {
        var parent = document.createElement('div');
        parent.appendChild(child);
        child.after('text');
        var expected = innerHTML + 'text';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with only text as an argument.');

    test(function() {
        var parent = document.createElement('div');
        var x = document.createElement('x');
        parent.appendChild(child);
        child.after(x);
        var expected = innerHTML + '<x></x>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with only one element as an argument.');

    test(function() {
        var parent = document.createElement('div');
        var x = document.createElement('x');
        parent.appendChild(child);
        child.after(x, 'text');
        var expected = innerHTML + '<x></x>text';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with one element and text as arguments.');

    test(function() {
        var parent = document.createElement('div');
        parent.appendChild(child);
        child.after('text', child);
        var expected = 'text' + innerHTML;
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with context object itself as the argument.');

    test(function() {
        var parent = document.createElement('div')
        var x = document.createElement('x');
        parent.appendChild(x);
        parent.appendChild(child);
        child.after(child, x);
        var expected = innerHTML + '<x></x>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with context object itself and node as the arguments, switching positions.');

    test(function() {
        var parent = document.createElement('div');
        var x = document.createElement('x');
        var y = document.createElement('y');
        var z = document.createElement('z');
        parent.appendChild(y);
        parent.appendChild(child);
        parent.appendChild(x);
        child.after(x, y, z);
        var expected = innerHTML + '<x></x><y></y><z></z>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with all siblings of child as arguments.');

    test(function() {
        var parent = document.createElement('div')
        var x = document.createElement('x');
        var y = document.createElement('y');
        var z = document.createElement('z');
        parent.appendChild(child);
        parent.appendChild(x);
        parent.appendChild(y);
        parent.appendChild(z);
        child.after(x, y);
        var expected = innerHTML + '<x></x><y></y><z></z>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.before() with some siblings of child as arguments; no changes in tree; viable sibling is first child.');

    test(function() {
        var parent = document.createElement('div')
        var v = document.createElement('v');
        var x = document.createElement('x');
        var y = document.createElement('y');
        var z = document.createElement('z');
        parent.appendChild(child);
        parent.appendChild(v);
        parent.appendChild(x);
        parent.appendChild(y);
        parent.appendChild(z);
        child.after(v, x);
        var expected = innerHTML + '<v></v><x></x><y></y><z></z>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with some siblings of child as arguments; no changes in tree.');

    test(function() {
        var parent = document.createElement('div');
        var x = document.createElement('x');
        var y = document.createElement('y');
        parent.appendChild(child);
        parent.appendChild(x);
        parent.appendChild(y);
        child.after(y, x);
        var expected = innerHTML + '<y></y><x></x>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() when pre-insert behaves like append.');

    test(function() {
        var parent = document.createElement('div');
        var x = document.createElement('x');
        var y = document.createElement('y');
        parent.appendChild(child);
        parent.appendChild(x);
        parent.appendChild(document.createTextNode('1'));
        parent.appendChild(y);
        child.after(x, '2');
        var expected = innerHTML + '<x></x>21<y></y>';
        assert_equals(parent.innerHTML, expected);
    }, nodeName + '.after() with one sibling of child and text as arguments.');

    test(function() {
        var x = document.createElement('x');
        var y = document.createElement('y');
        x.after(y);
        assert_equals(x.nextSibling, null);
    }, nodeName + '.after() on a child without any parent.');
}

test_after(document.createComment('test'), 'Comment', '<!--test-->');
test_after(document.createElement('test'), 'Element', '<test></test>');
test_after(document.createTextNode('test'), 'Text', 'test');

</script>
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