| <!DOCTYPE html> |
| <title>Custom Elements: defineElement</title> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#customelementsregistry"> |
| <meta name="author" title="Dominic Cooney" href="mailto:dominicc@chromium.org"> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharness-helpers.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script src="resources/custom-elements-helpers.js"></script> |
| <body> |
| <script> |
| // TODO(dominicc): Merge these tests with |
| // https://github.com/w3c/web-platform-tests/pull/2940 |
| |
| 'use strict'; |
| |
| test_with_window((w) => { |
| assert_throws(TypeError.prototype, () => { |
| w.customElements.define('a-a', 42); |
| }, 'defining a number "constructor" should throw a TypeError'); |
| assert_throws(TypeError.prototype, () => { |
| w.customElements.define('a-a', () => {}); |
| }, 'defining an arrow function "constructor" should throw a TypeError'); |
| assert_throws(TypeError.prototype, () => { |
| w.customElements.define('a-a', { m() {} }.m); |
| }, 'defining a concise method "constructor" should throw a TypeError'); |
| }, 'A "constructor" that is not a constructor'); |
| |
| test_with_window((w) => { |
| // https://html.spec.whatwg.org/multipage/scripting.html#valid-custom-element-name |
| let invalid_names = [ |
| 'annotation-xml', |
| 'color-profile', |
| 'font-face', |
| 'font-face-src', |
| 'font-face-uri', |
| 'font-face-format', |
| 'font-face-name', |
| 'missing-glyph', |
| 'div', 'p', |
| 'nothtmlbutnohyphen', |
| '-not-initial-a-z', '0not-initial-a-z', 'Not-initial-a-z', |
| 'intermediate-UPPERCASE-letters', |
| 'bad-\u00b6', 'bad-\u00b8', 'bad-\u00bf', 'bad-\u00d7', 'bad-\u00f7', |
| 'bad-\u037e', 'bad-\u037e', 'bad-\u2000', 'bad-\u200e', 'bad-\u203e', |
| 'bad-\u2041', 'bad-\u206f', 'bad-\u2190', 'bad-\u2bff', 'bad-\u2ff0', |
| 'bad-\u3000', 'bad-\ud800', 'bad-\uf8ff', 'bad-\ufdd0', 'bad-\ufdef', |
| 'bad-\ufffe', 'bad-\uffff', 'bad-' + String.fromCodePoint(0xf0000) |
| ]; |
| class X extends w.HTMLElement {} |
| invalid_names.forEach((name) => { |
| assert_throws('SYNTAX_ERR', () => { |
| w.customElements.define(name, X); |
| }, `defining an element named "${name}" should throw a SyntaxError`); |
| }); |
| }, 'Invalid names'); |
| |
| test_with_window((w) => { |
| class X extends w.HTMLElement {} |
| class Y extends w.HTMLElement {} |
| w.customElements.define('a-a', X); |
| assert_throws('NotSupportedError', () => { |
| w.customElements.define('a-a', Y); |
| }, 'defining an element with a name that is already defined should throw ' + |
| 'a NotSupportedError'); |
| }, 'Duplicate name'); |
| |
| test_with_window((w) => { |
| class X extends w.HTMLElement {} |
| w.customElements.define('a-a', X); |
| assert_throws('NotSupportedError', () => { |
| w.customElements.define('a-b', X); |
| }, 'defining an element with a constructor that is already in the ' + |
| 'registry should throw a NotSupportedError'); |
| }, 'Reused constructor'); |
| |
| test_with_window((w) => { |
| function F() {} |
| F.prototype = 42; |
| assert_throws(TypeError.prototype, () => { |
| w.customElements.define('a-a', F); |
| }, 'defining an element with a constructor with a prototype that is not an ' + |
| 'object should throw a TypeError'); |
| }, 'Retrieved prototype is a non-object'); |
| |
| test_with_window((w) => { |
| assert_throws(TypeError.prototype, () => { |
| let not_a_constructor = () => {}; |
| let invalid_name = 'annotation-xml'; |
| w.customElements.define(invalid_name, not_a_constructor); |
| }, 'defining an element with an invalid name and invalid constructor ' + |
| 'should throw a TypeError for the constructor and not a SyntaxError'); |
| |
| class C extends w.HTMLElement {} |
| w.customElements.define('a-a', C); |
| assert_throws('SYNTAX_ERR', () => { |
| let invalid_name = 'annotation-xml'; |
| let reused_constructor = C; |
| w.customElements.define(invalid_name, reused_constructor); |
| }, 'defining an element with an invalid name and a reused constructor ' + |
| 'should throw a SyntaxError for the name and not a NotSupportedError'); |
| }, 'Order of checks'); |
| |
| test_with_window((w) => { |
| let doc = w.document; |
| doc.body.innerHTML = ` |
| <a-a id="a"> |
| <p> |
| <a-a id="b"></a-a> |
| <a-a id="c"></a-a> |
| </p> |
| <a-a id="d"></a-a> |
| </a-a>`; |
| let invocations = []; |
| class C extends w.HTMLElement { |
| constructor() { |
| super(); |
| console.log(this.getAttribute('id')); |
| invocations.push(this); |
| } |
| } |
| w.customElements.define('a-a', C); |
| assert_array_equals(['a', 'b', 'c', 'd'], invocations.map((e) => e.id), |
| 'four elements should have been upgraded in doc order'); |
| }, 'Upgrade: existing elements'); |
| |
| test_with_window((w) => { |
| let doc = w.document; |
| let a = doc.createElement('a-a'); |
| doc.body.appendChild(a); |
| assert_equals(w.HTMLElement.prototype, Object.getPrototypeOf(a), |
| 'the undefined autonomous element should be a HTMLElement'); |
| let invocations = []; |
| class C extends w.HTMLElement { |
| constructor() { |
| super(); |
| assert_equals(C.prototype, Object.getPrototypeOf(a), |
| 'the HTMLElement constructor should set the prototype ' + |
| 'to the defined prototype'); |
| invocations.push(this); |
| } |
| } |
| w.customElements.define('a-a', C); |
| assert_array_equals([a], invocations, |
| 'the constructor should have been invoked for the in-' + |
| 'document element'); |
| }, 'Upgrade: sets prototype of existing elements'); |
| |
| test_with_window((w) => { |
| let doc = w.document; |
| var shadow = doc.body.attachShadow({mode: 'open'}); |
| let a = doc.createElement('a-a'); |
| shadow.appendChild(a); |
| let invocations = []; |
| class C extends w.HTMLElement { |
| constructor() { |
| super(); |
| invocations.push(this); |
| } |
| } |
| w.customElements.define('a-a', C); |
| assert_array_equals([a], invocations, |
| 'the constructor should have been invoked once for the ' + |
| 'elements in the shadow tree'); |
| }, 'Upgrade: shadow tree'); |
| </script> |