LayoutTests/fast/custom-elements/defined-pseudo-class.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <title>Custom Elements: The ':defined' pseudo-class applies to elements that are defined.</title>
 <link rel="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org"/>
 <link rel="help" href="https://w3c.github.io/webcomponents/spec/custom/#the-defined-element-pseudo-class-defined">
 <script src="../../resources/testharness.js"></script>
 <script src="../../resources/testharnessreport.js"></script>
 </head>
 <body>
 <div id="log"></div>
 <script>
 setup({allow_uncaught_exception:true});

 var upgradeCandidate = document.createElement('my-element');

 test(function () {
     assert_false(upgradeCandidate.matches(':defined'));
 }, 'The defined flag of a custom element must not be set if a custom element has not been upgraded yet');

 class MyElement extends HTMLElement {
     constructor() {
         super();
         this.matchInsideConstructor = this.matches(':defined');
     }
 }

 customElements.define('my-element', MyElement);

 test(function () {
     assert_false(upgradeCandidate.matches(':defined'));
 }, 'The defined flag of a custom element must not be set if a custom element has not been upgraded yet even if the element has been defined');

 test(function () {
     document.body.appendChild(upgradeCandidate);
     assert_true(upgradeCandidate.matches(':defined'));
     assert_false(!!upgradeCandidate.matchInsideConstructor, 'Upgrading a custom element must set defined flag after invoking the constructor');
 }, 'The defined flag of a custom element must be set when a custom element is successfully upgraded');

 test(function () {
     var definedElement = document.createElement('my-element');
     assert_true(definedElement.matches(':defined'));
     assert_true(!!definedElement.matchInsideConstructor);
 }, 'The defined flag of a custom element must be set inside the HTMLElement constructor');

 test(function () {
     var upgradedElement = document.createElement('my-element').cloneNode(true);
     assert_true(upgradedElement.matches(':defined'));
     assert_false(!!upgradedElement.matchInsideConstructor, 'Upgrading a custom element must set defined flag after invoking the constructor');
 }, 'The defined flag of an upgraded custom element must be set');

 document.write('<my-other-element></my-other-element>');

 test(function () {
     var parserCreatedUnfefinedElement = document.querySelector('my-other-element');
     assert_false(parserCreatedUnfefinedElement.matches(':defined'));
     assert_false(!!parserCreatedUnfefinedElement.matchInsideConstructor);
 }, 'The defined flag of a custom element created by HTML parser must be unset if there is no matching definition');

 document.write('<my-element id="parser-created-defined-element"></my-element>');

 test(function () {
     var parserCreatedDefinedElement = document.getElementById('parser-created-defined-element');
     assert_true(parserCreatedDefinedElement.matches(':defined'));
     assert_true(!!parserCreatedDefinedElement.matchInsideConstructor,
         'The defined flag must be set inside HTMLElement constructor when HTMLParser creates a custom element synchronously');
 }, 'The defined flag of a custom element created by HTML parser must be set if there is a matching definition');

 class ReturnsAnotherNode extends HTMLElement {
     constructor() {
         super();
         this.matchInsideConstructor = this.matches(':defined');
         ReturnsAnotherNode.lastInstance = this;
         return document.createTextNode('');
     }
 }
 customElements.define('returns-another-node', ReturnsAnotherNode);

 var uncaughtError;
 window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
 document.write('<returns-another-node></returns-another-node>');
 window.onerror = null;

 test(function () {
     var instance = document.querySelector('returns-another-node');
     assert_equals(uncaughtError.name, 'TypeError', 'The HTML parser must report a TypeError when a custom element returns a non-Element node.');
     assert_not_equals(instance, ReturnsAnotherNode.lastInstance, 'The element inserted by HTML parser must not be the one returned by super() call');
     assert_true(instance instanceof HTMLElement, 'The element inserted by HTML parser must be a HTMLElement');
     assert_false(instance instanceof ReturnsAnotherNode, 'The element inserted by HTML parser must be a custom element');
     assert_false(instance.matches(':defined'), 'The defined flag must not be set on the element inserted by HTML parser');
     assert_true(!!ReturnsAnotherNode.lastInstance.matchInsideConstructor,
         'The defined flag must be set inside HTMLElement constructor when HTMLParser creates a custom element synchronously');
 }, 'The element inserted by HTML parser must not have the defined flag set if the constructor returns a Text node');

 test(function () {
     var instance = document.createElement('returns-another-node-2');
     try {
         customElements.define('returns-another-node-2', class extends ReturnsAnotherNode {});
     } catch (e) { }
     assert_false(instance.matches(':defined'));
     assert_false(!!instance.matchInsideConstructor,
         'Creating a custom element must leave the defined flag unset when synchronous custom elements flag is not set');
 }, 'The defined flag of a custom element must be set after checking the returned result is an instance of HTMLElement when upgrading a custom element');

 test(function () {
     var matchInsideConstructor = false;
     const theException = {name: 'bad'};
     class ThrowsException extends HTMLElement {
         constructor() {
             super();
             matchInsideConstructor = this.matches(':defined');
             throw theException;
         }
     };
     customElements.define('throws-exception', ThrowsException);
     var instance;
     assert_throws_exactly(theException, function () { instance = new ThrowsException; });
     assert_true(matchInsideConstructor);
 }, 'The defined flag of a custom element must be set inside a constructor when constructing a custom element synchronously'
     + ' even if the constructor threw an exception later');

 test(function () {
     var instance = document.createElement('throws-exception-2');
     const theException = {name: 'bad'};
     document.body.appendChild(instance);
     var uncaughtError;
     window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
     customElements.define('throws-exception-2', class extends HTMLElement {
         constructor() {
             throw theException;
         }
     });
     assert_equals(uncaughtError.name, 'bad');
     assert_false(instance.matches(':defined'));
 }, 'The defined flag of a custom element must not be set when an upgrade of a custom element fails');

 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Custom Elements: The ':defined' pseudo-class applies to elements that are defined.</title>
	<link rel="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org"/>
	<link rel="help" href="https://w3c.github.io/webcomponents/spec/custom/#the-defined-element-pseudo-class-defined">
	<script src="../../resources/testharness.js"></script>
	<script src="../../resources/testharnessreport.js"></script>
	</head>
	<body>
	<div id="log"></div>
	<script>
	setup({allow_uncaught_exception:true});

	var upgradeCandidate = document.createElement('my-element');

	test(function () {
	assert_false(upgradeCandidate.matches(':defined'));
	}, 'The defined flag of a custom element must not be set if a custom element has not been upgraded yet');

	class MyElement extends HTMLElement {
	constructor() {
	super();
	this.matchInsideConstructor = this.matches(':defined');
	}
	}

	customElements.define('my-element', MyElement);

	test(function () {
	assert_false(upgradeCandidate.matches(':defined'));
	}, 'The defined flag of a custom element must not be set if a custom element has not been upgraded yet even if the element has been defined');

	test(function () {
	document.body.appendChild(upgradeCandidate);
	assert_true(upgradeCandidate.matches(':defined'));
	assert_false(!!upgradeCandidate.matchInsideConstructor, 'Upgrading a custom element must set defined flag after invoking the constructor');
	}, 'The defined flag of a custom element must be set when a custom element is successfully upgraded');

	test(function () {
	var definedElement = document.createElement('my-element');
	assert_true(definedElement.matches(':defined'));
	assert_true(!!definedElement.matchInsideConstructor);
	}, 'The defined flag of a custom element must be set inside the HTMLElement constructor');

	test(function () {
	var upgradedElement = document.createElement('my-element').cloneNode(true);
	assert_true(upgradedElement.matches(':defined'));
	assert_false(!!upgradedElement.matchInsideConstructor, 'Upgrading a custom element must set defined flag after invoking the constructor');
	}, 'The defined flag of an upgraded custom element must be set');

	document.write('<my-other-element></my-other-element>');

	test(function () {
	var parserCreatedUnfefinedElement = document.querySelector('my-other-element');
	assert_false(parserCreatedUnfefinedElement.matches(':defined'));
	assert_false(!!parserCreatedUnfefinedElement.matchInsideConstructor);
	}, 'The defined flag of a custom element created by HTML parser must be unset if there is no matching definition');

	document.write('<my-element id="parser-created-defined-element"></my-element>');

	test(function () {
	var parserCreatedDefinedElement = document.getElementById('parser-created-defined-element');
	assert_true(parserCreatedDefinedElement.matches(':defined'));
	assert_true(!!parserCreatedDefinedElement.matchInsideConstructor,
	'The defined flag must be set inside HTMLElement constructor when HTMLParser creates a custom element synchronously');
	}, 'The defined flag of a custom element created by HTML parser must be set if there is a matching definition');

	class ReturnsAnotherNode extends HTMLElement {
	constructor() {
	super();
	this.matchInsideConstructor = this.matches(':defined');
	ReturnsAnotherNode.lastInstance = this;
	return document.createTextNode('');
	}
	}
	customElements.define('returns-another-node', ReturnsAnotherNode);

	var uncaughtError;
	window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
	document.write('<returns-another-node></returns-another-node>');
	window.onerror = null;

	test(function () {
	var instance = document.querySelector('returns-another-node');
	assert_equals(uncaughtError.name, 'TypeError', 'The HTML parser must report a TypeError when a custom element returns a non-Element node.');
	assert_not_equals(instance, ReturnsAnotherNode.lastInstance, 'The element inserted by HTML parser must not be the one returned by super() call');
	assert_true(instance instanceof HTMLElement, 'The element inserted by HTML parser must be a HTMLElement');
	assert_false(instance instanceof ReturnsAnotherNode, 'The element inserted by HTML parser must be a custom element');
	assert_false(instance.matches(':defined'), 'The defined flag must not be set on the element inserted by HTML parser');
	assert_true(!!ReturnsAnotherNode.lastInstance.matchInsideConstructor,
	'The defined flag must be set inside HTMLElement constructor when HTMLParser creates a custom element synchronously');
	}, 'The element inserted by HTML parser must not have the defined flag set if the constructor returns a Text node');

	test(function () {
	var instance = document.createElement('returns-another-node-2');
	try {
	customElements.define('returns-another-node-2', class extends ReturnsAnotherNode {});
	} catch (e) { }
	assert_false(instance.matches(':defined'));
	assert_false(!!instance.matchInsideConstructor,
	'Creating a custom element must leave the defined flag unset when synchronous custom elements flag is not set');
	}, 'The defined flag of a custom element must be set after checking the returned result is an instance of HTMLElement when upgrading a custom element');

	test(function () {
	var matchInsideConstructor = false;
	const theException = {name: 'bad'};
	class ThrowsException extends HTMLElement {
	constructor() {
	super();
	matchInsideConstructor = this.matches(':defined');
	throw theException;
	}
	};
	customElements.define('throws-exception', ThrowsException);
	var instance;
	assert_throws_exactly(theException, function () { instance = new ThrowsException; });
	assert_true(matchInsideConstructor);
	}, 'The defined flag of a custom element must be set inside a constructor when constructing a custom element synchronously'
	+ ' even if the constructor threw an exception later');

	test(function () {
	var instance = document.createElement('throws-exception-2');
	const theException = {name: 'bad'};
	document.body.appendChild(instance);
	var uncaughtError;
	window.onerror = function (message, url, lineNumber, columnNumber, error) { uncaughtError = error; return true; }
	customElements.define('throws-exception-2', class extends HTMLElement {
	constructor() {
	throw theException;
	}
	});
	assert_equals(uncaughtError.name, 'bad');
	assert_false(instance.matches(':defined'));
	}, 'The defined flag of a custom element must not be set when an upgrade of a custom element fails');

	</script>
	</body>
	</html>