| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>Custom Elements: Changes to the HTML parser</title> |
| <meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org"> |
| <meta name="assert" content="HTML parser must set the attributes and append the children on a custom element"> |
| <link rel="help" href="https://html.spec.whatwg.org/#create-an-element-for-the-token"> |
| <link rel="help" href="https://dom.spec.whatwg.org/#concept-create-element"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <div id="log"></div> |
| <script> |
| |
| var numberOfAttributesInConstructor; |
| var numberOfChildNodesInConstructor; |
| |
| class MyCustomElement extends HTMLElement { |
| constructor(...args) { |
| super(...args); |
| numberOfAttributesInConstructor = this.attributes.length; |
| numberOfChildNodesInConstructor = this.childNodes.length; |
| } |
| }; |
| customElements.define('my-custom-element', MyCustomElement); |
| |
| </script> |
| <my-custom-element id="custom-element-id" class="class1 class2">hello <b>world</b></my-custom-element> |
| <script> |
| |
| var customElement = document.querySelector('my-custom-element'); |
| |
| test(function () { |
| assert_equals(customElement.getAttribute('id'), 'custom-element-id', 'HTML parser must preserve the id attribute'); |
| assert_equals(customElement.id, 'custom-element-id', 'HTML parser must preserve the semantics of reflect for the id attribute'); |
| assert_equals(customElement.getAttribute('class'), 'class1 class2', 'HTML parser must preserve the class attribute'); |
| assert_equals(customElement.classList.length, 2, 'HTML parser must initialize classList on custom elements'); |
| assert_equals(customElement.classList[0], 'class1', 'HTML parser must initialize classList on custom elements'); |
| assert_equals(customElement.classList[1], 'class2', 'HTML parser must initialize classList on custom elements'); |
| }, 'HTML parser must set the attributes'); |
| |
| test(function () { |
| assert_equals(customElement.childNodes.length, 2, 'HTML parser must append child nodes'); |
| assert_true(customElement.firstChild instanceof Text, 'HTML parser must append Text node child to a custom element'); |
| assert_equals(customElement.firstChild.data, 'hello ', 'HTML parser must append Text node child to a custom element'); |
| assert_true(customElement.lastChild instanceof HTMLElement, 'HTML parser must append a builtin element child to a custom element'); |
| assert_true(customElement.lastChild.firstChild instanceof Text, 'HTML parser must preserve grandchild nodes of a custom element'); |
| assert_equals(customElement.lastChild.firstChild.data, 'world', 'HTML parser must preserve grandchild nodes of a custom element'); |
| }, 'HTML parser must append child nodes'); |
| |
| test(function () { |
| assert_equals(numberOfAttributesInConstructor, 0, 'HTML parser must not set attributes on a custom element before invoking the constructor'); |
| assert_equals(numberOfChildNodesInConstructor, 0, 'HTML parser must not append child nodes to a custom element before invoking the constructor'); |
| }, 'HTML parser must set the attributes or append children before calling constructor'); |
| |
| </script> |
| </body> |
| </html> |
