| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>ChildNode.before</title> |
| <link rel=help href="https://dom.spec.whatwg.org/#dom-childnode-before"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| |
| function test_before(child, nodeName, innerHTML) { |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| parent.appendChild(child); |
| child.before(); |
| assert_equals(parent.innerHTML, innerHTML); |
| }, nodeName + '.before() without any argument.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| parent.appendChild(child); |
| child.before(null); |
| var expected = 'null' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() with null as an argument.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| parent.appendChild(child); |
| child.before(undefined); |
| var expected = 'undefined' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() with undefined as an argument.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| parent.appendChild(child); |
| child.before(''); |
| assert_equals(parent.firstChild.data, ''); |
| }, nodeName + '.before() with the empty string as an argument.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| parent.appendChild(child); |
| child.before('text'); |
| var expected = 'text' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() with only text as an argument.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| var x = document.createElement('x'); |
| parent.appendChild(child); |
| child.before(x); |
| var expected = '<x></x>' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() with only one element as an argument.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| var x = document.createElement('x'); |
| parent.appendChild(child); |
| child.before(x, 'text'); |
| var expected = '<x></x>text' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() with one element and text as arguments.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| parent.appendChild(child); |
| child.before('text', child); |
| var expected = 'text' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() with context object itself as the argument.'); |
| |
| test(function() { |
| var parent = document.createElement('div') |
| var x = document.createElement('x'); |
| parent.appendChild(child); |
| parent.appendChild(x); |
| child.before(x, child); |
| var expected = '<x></x>' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() 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.before(x, y, z); |
| var expected = '<x></x><y></y><z></z>' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() 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(x); |
| parent.appendChild(y); |
| parent.appendChild(z); |
| parent.appendChild(child); |
| child.before(y, z); |
| var expected = '<x></x><y></y><z></z>' + innerHTML; |
| 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(v); |
| parent.appendChild(x); |
| parent.appendChild(y); |
| parent.appendChild(z); |
| parent.appendChild(child); |
| child.before(y, z); |
| var expected = '<v></v><x></x><y></y><z></z>' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() 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(x); |
| parent.appendChild(y); |
| parent.appendChild(child); |
| child.before(y, x); |
| var expected = '<y></y><x></x>' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() when pre-insert behaves like prepend.'); |
| |
| test(function() { |
| var parent = document.createElement('div'); |
| var x = document.createElement('x'); |
| parent.appendChild(x); |
| parent.appendChild(document.createTextNode('1')); |
| var y = document.createElement('y'); |
| parent.appendChild(y); |
| parent.appendChild(child); |
| child.before(x, '2'); |
| var expected = '1<y></y><x></x>2' + innerHTML; |
| assert_equals(parent.innerHTML, expected); |
| }, nodeName + '.before() with one sibling of child and text as arguments.'); |
| |
| test(function() { |
| var x = document.createElement('x'); |
| var y = document.createElement('y'); |
| x.before(y); |
| assert_equals(x.previousSibling, null); |
| }, nodeName + '.before() on a child without any parent.'); |
| } |
| |
| test_before(document.createComment('test'), 'Comment', '<!--test-->'); |
| test_before(document.createElement('test'), 'Element', '<test></test>'); |
| test_before(document.createTextNode('test'), 'Text', 'test'); |
| |
| </script> |
| </html> |
