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Update web-platform-tests to revision dc5cbf088edcdb266541d4e5a76149a2c6e716a0
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<!DOCTYPE html>
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<title>Custom Elements: Element definition</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<body>
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<div id="log"></div>
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<iframe id="iframe"></iframe>
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<script>
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'use strict';
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(() => {
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// Element definition
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// https://html.spec.whatwg.org/multipage/scripting.html#element-definition
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// Use window from iframe to isolate the test.
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const testWindow = iframe.contentDocument.defaultView;
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const customElements = testWindow.customElements;
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let testable = false;
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test(() => {
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assert_true('customElements' in testWindow, '"window.customElements" exists');
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assert_true('define' in customElements, '"window.customElements.define" exists');
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testable = true;
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}, '"window.customElements.define" should exists');
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if (!testable)
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return;
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const expectTypeError = TypeError.prototype;
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// Following errors are DOMException, not JavaScript errors.
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const expectSyntaxError = 'SYNTAX_ERR';
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const expectNotSupportedError = 'NOT_SUPPORTED_ERR';
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// 1. If IsConstructor(constructor) is false,
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// then throw a TypeError and abort these steps.
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test(() => {
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assert_throws(expectTypeError, () => {
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customElements.define();
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});
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}, 'If no arguments, should throw a TypeError');
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test(() => {
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assert_throws(expectTypeError, () => {
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customElements.define('test-define-one-arg');
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});
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}, 'If one argument, should throw a TypeError');
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[
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[ 'undefined', undefined ],
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[ 'null', null ],
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[ 'object', {} ],
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[ 'string', 'string' ],
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[ 'arrow function', () => {} ], // IsConstructor returns false for arrow functions
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[ 'method', ({ m() { } }).m ], // IsConstructor returns false for methods
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].forEach(t => {
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test(() => {
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assert_throws(expectTypeError, () => {
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customElements.define(`test-define-constructor-${t[0]}`, t[1]);
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});
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}, `If constructor is ${t[0]}, should throw a TypeError`);
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});
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// 2. If name is not a valid custom element name,
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// then throw a SyntaxError and abort these steps.
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let validCustomElementNames = [
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// [a-z] (PCENChar)* '-' (PCENChar)*
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// https://html.spec.whatwg.org/multipage/scripting.html#valid-custom-element-name
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'a-',
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'a-a',
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'aa-',
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'aa-a',
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'a-.-_',
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'a-0123456789',
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'a-\u6F22\u5B57', // Two CJK Unified Ideographs
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'a-\uD840\uDC0B', // Surrogate pair U+2000B
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];
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let invalidCustomElementNames = [
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undefined,
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null,
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'',
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'-',
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'a',
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'input',
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'mycustomelement',
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'A',
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'A-',
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'0-',
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'a-A',
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'a-Z',
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'A-a',
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'a-a\u00D7',
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'a-a\u3000',
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'a-a\uDB80\uDC00', // Surrogate pair U+F0000
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// name must not be any of the hyphen-containing element names.
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'annotation-xml',
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'color-profile',
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'font-face',
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'font-face-src',
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'font-face-uri',
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'font-face-format',
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'font-face-name',
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'missing-glyph',
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];
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validCustomElementNames.forEach(name => {
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test(() => {
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customElements.define(name, class {});
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}, `Element names: defining an element named ${name} should succeed`);
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});
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invalidCustomElementNames.forEach(name => {
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test(() => {
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assert_throws(expectSyntaxError, () => {
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customElements.define(name, class {});
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});
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}, `Element names: defining an element named ${name} should throw a SyntaxError`);
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});
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// 3. If this CustomElementRegistry contains an entry with name name,
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// then throw a NotSupportedError and abort these steps.
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test(() => {
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customElements.define('test-define-dup-name', class {});
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assert_throws(expectNotSupportedError, () => {
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customElements.define('test-define-dup-name', class {});
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});
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}, 'If the name is already defined, should throw a NotSupportedError');
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// 5. If this CustomElementRegistry contains an entry with constructor constructor,
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// then throw a NotSupportedError and abort these steps.
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test(() => {
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class TestDupConstructor {};
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customElements.define('test-define-dup-constructor', TestDupConstructor);
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assert_throws(expectNotSupportedError, () => {
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customElements.define('test-define-dup-ctor2', TestDupConstructor);
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});
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}, 'If the constructor is already defined, should throw a NotSupportedError');
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// 9.1. If extends is a valid custom element name,
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// then throw a NotSupportedError.
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validCustomElementNames.forEach(name => {
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test(() => {
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assert_throws(expectNotSupportedError, () => {
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customElements.define('test-define-extend-valid-name', class {}, { extends: name });
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});
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}, `If extends is ${name}, should throw a NotSupportedError`);
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});
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// 9.2. If the element interface for extends and the HTML namespace is HTMLUnknownElement
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// (e.g., if extends does not indicate an element definition in this specification),
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// then throw a NotSupportedError.
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[
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// https://html.spec.whatwg.org/multipage/dom.html#elements-in-the-dom:htmlunknownelement
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'bgsound',
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'blink',
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'isindex',
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'multicol',
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'nextid',
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'spacer',
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'elementnametobeunknownelement',
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].forEach(name => {
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test(() => {
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assert_throws(expectNotSupportedError, () => {
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customElements.define('test-define-extend-' + name, class {}, { extends: name });
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});
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}, `If extends is ${name}, should throw a NotSupportedError`);
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});
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// 12.1. Let prototype be Get(constructor, "prototype"). Rethrow any exceptions.
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function assert_rethrown(func, description) {
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assert_throws({ name: 'rethrown' }, func, description);
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}
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function throw_rethrown_error() {
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const e = new Error('check this is rethrown');
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e.name = 'rethrown';
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throw e;
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}
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test(() => {
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// Hack for prototype to throw while IsConstructor is true.
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const BadConstructor = (function () { }).bind({});
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Object.defineProperty(BadConstructor, 'prototype', {
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get() { throw_rethrown_error(); }
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});
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assert_rethrown(() => {
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customElements.define('test-define-constructor-prototype-rethrow', BadConstructor);
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});
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}, 'If constructor.prototype throws, should rethrow');
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// 12.2. If Type(prototype) is not Object,
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// then throw a TypeError exception.
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test(() => {
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const c = (function () { }).bind({}); // prototype is undefined.
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assert_throws(expectTypeError, () => {
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customElements.define('test-define-constructor-prototype-undefined', c);
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});
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}, 'If Type(constructor.prototype) is undefined, should throw a TypeError');
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test(() => {
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function c() {};
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c.prototype = 'string';
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assert_throws(expectTypeError, () => {
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customElements.define('test-define-constructor-prototype-string', c);
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});
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}, 'If Type(constructor.prototype) is string, should throw a TypeError');
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// 12.3. Let lifecycleCallbacks be a map with the four keys "connectedCallback",
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// "disconnectedCallback", "adoptedCallback", and "attributeChangedCallback",
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// each of which belongs to an entry whose value is null.
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// 12.4. For each of the four keys callbackName in lifecycleCallbacks:
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// 12.4.1. Let callbackValue be Get(prototype, callbackName). Rethrow any exceptions.
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// 12.4.2. If callbackValue is not undefined, then set the value of the entry in
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// lifecycleCallbacks with key callbackName to the result of converting callbackValue
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// to the Web IDL Function callback type. Rethrow any exceptions from the conversion.
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[
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'connectedCallback',
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'disconnectedCallback',
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'adoptedCallback',
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'attributeChangedCallback',
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].forEach(name => {
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test(() => {
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class C {
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get [name]() { throw_rethrown_error(); }
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}
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assert_rethrown(() => {
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customElements.define(`test-define-${name.toLowerCase()}-rethrow`, C);
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});
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}, `If constructor.prototype.${name} throws, should rethrow`);
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[
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{ name: 'undefined', value: undefined, success: true },
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{ name: 'function', value: function () { }, success: true },
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{ name: 'null', value: null, success: false },
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{ name: 'object', value: {}, success: false },
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{ name: 'integer', value: 1, success: false },
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].forEach(data => {
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test(() => {
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class C { };
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C.prototype[name] = data.value;
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if (data.success) {
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customElements.define(`test-define-${name.toLowerCase()}-${data.name}`, C);
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} else {
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assert_throws(expectTypeError, () => {
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customElements.define(`test-define-${name.toLowerCase()}-${data.name}`, C);
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});
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}
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}, `If constructor.prototype.${name} is ${data.name}, should ${data.success ? 'succeed' : 'throw a TypeError'}`);
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});
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});
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})();
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</script>
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</body>
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