custom-elements/upgrading.html - external/w3c/web-platform-tests - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <title>Custom Elements: Enqueue a custom element upgrade reaction</title>
 <meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
 <meta name="assert" content="Enqueue a custom element upgrade reaction must upgrade a custom element">
 <link rel="help" href="https://dom.spec.whatwg.org/#concept-create-element">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#concept-try-upgrade">
 <link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#enqueue-a-custom-element-upgrade-reaction">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="resources/custom-elements-helpers.js"></script>
 </head>
 <body>
 <infinite-cloning-element-1></infinite-cloning-element-1>
 <infinite-cloning-element-2 id="a"></infinite-cloning-element-2>
 <infinite-cloning-element-2 id="b"></infinite-cloning-element-2>
 <div id="log"></div>
 <script>
 setup({allow_uncaught_exception:true});

 class PredefinedCustomElement extends HTMLElement {}
 customElements.define('predefined-custom-element', PredefinedCustomElement);

 var customElementNumber = 1;
 function generateNextCustomElementName() { return 'custom-' + customElementNumber++; }

 // Tests for documents without a browsing context.
 document_types().filter(function (entry) { return !entry.isOwner && !entry.hasBrowsingContext; }).forEach(function (entry) {
  var documentName = entry.name;
  var getDocument = entry.create;

  promise_test(function () {
  return getDocument().then(function (doc) {
  assert_false(doc.createElement('predefined-custom-element') instanceof PredefinedCustomElement);
  });
  }, 'Creating an element in ' + documentName + ' must not enqueue a custom element upgrade reaction'
  + ' because the document does not have a browsing context');

  promise_test(function () {
  var name = generateNextCustomElementName();
  var unresolvedElement = document.createElement(name);

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype,
  '[[Prototype]] internal slot of the unresolved custom element must be the HTMLElement prototype');

  return getDocument().then(function (doc) {
  var unresolvedElementInDoc = doc.createElement(name);
  var prototype = (unresolvedElementInDoc.namespaceURI == 'http://www.w3.org/1999/xhtml' ? HTMLElement : Element).prototype;

  assert_equals(unresolvedElementInDoc.__proto__, prototype,
  '[[Prototype]] internal slot of the unresolved custom element must be the ' + prototype.toString() + ' prototype');
  var someCustomElement = class extends HTMLElement {};
  customElements.define(name, someCustomElement);
  assert_equals(unresolvedElementInDoc.__proto__, prototype, '"define" must not upgrade a disconnected unresolved custom elements');
  doc.documentElement.appendChild(unresolvedElementInDoc);
  assert_equals(unresolvedElementInDoc.__proto__, prototype,
  'Inserting an element into a document without a browsing context must not enqueue a custom element upgrade reaction');
  });
  }, 'Creating an element in ' + documentName + ' and inserting into the document must not enqueue a custom element upgrade reaction');

  promise_test(function () {
  var name = generateNextCustomElementName();
  var unresolvedElement = document.createElement(name);

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype,
  '[[Prototype]] internal slot of the unresolved custom element must be the HTMLElement prototype');

  return getDocument().then(function (doc) {
  var unresolvedElementInDoc = doc.createElement(name);
  var prototype = (unresolvedElementInDoc.namespaceURI == 'http://www.w3.org/1999/xhtml' ? HTMLElement : Element).prototype;

  assert_equals(unresolvedElementInDoc.__proto__, prototype,
  '[[Prototype]] internal slot of the unresolved custom element must be the ' + prototype.toString() + ' prototype');
  var someCustomElement = class extends HTMLElement {};
  customElements.define(name, someCustomElement);
  assert_equals(unresolvedElementInDoc.__proto__, prototype, '"define" must not upgrade a disconnected unresolved custom elements');
  document.body.appendChild(unresolvedElementInDoc);

  if (unresolvedElementInDoc.namespaceURI == 'http://www.w3.org/1999/xhtml') {
  assert_equals(unresolvedElementInDoc.__proto__, someCustomElement.prototype,
  'Inserting an element into a document with a browsing context must enqueue a custom element upgrade reaction');
  } else {
  assert_equals(unresolvedElementInDoc.__proto__, prototype,
  'Looking up a custom element definition must return null if the element is not in the HTML namespace');
  }
  });
  }, 'Creating an element in ' + documentName + ' and adopting back to a document with browsing context must enqueue a custom element upgrade reaction');

 });

 // Tests for documents with a browsing context.
 document_types().filter(function (entry) { return !entry.isOwner && entry.hasBrowsingContext; }).forEach(function (entry) {
  var documentName = entry.name;
  var getDocument = entry.create;

  promise_test(function () {
  return getDocument().then(function (doc) {
  assert_false(doc.createElement('predefined-custom-element') instanceof PredefinedCustomElement);
  });
  }, 'Creating an element in ' + documentName + ' must not enqueue a custom element upgrade reaction if there is no matching definition');

  promise_test(function () {
  return getDocument().then(function (doc) {
  var docWindow = doc.defaultView;
  class DistinctPredefinedCustomElement extends docWindow.HTMLElement { };
  docWindow.customElements.define('predefined-custom-element', DistinctPredefinedCustomElement);
  assert_true(doc.createElement('predefined-custom-element') instanceof DistinctPredefinedCustomElement);
  });
  }, 'Creating an element in ' + documentName + ' must enqueue a custom element upgrade reaction if there is a matching definition');

  promise_test(function () {
  var unresolvedElement = document.createElement('unresolved-element');
  return getDocument().then(function (doc) {
  var docWindow = doc.defaultView;
  class UnresolvedElement extends docWindow.HTMLElement { };
  var unresolvedElementInDoc = doc.createElement('unresolved-element');

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
  assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

  docWindow.customElements.define('unresolved-element', UnresolvedElement);

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
  assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

  });
  }, '"define" in ' + documentName + ' must not enqueue a custom element upgrade reaction on a disconnected unresolved custom element');

  promise_test(function () {
  var unresolvedElement = document.createElement('unresolved-element');
  return getDocument().then(function (doc) {
  var docWindow = doc.defaultView;
  class UnresolvedElement extends docWindow.HTMLElement { };
  var unresolvedElementInDoc = doc.createElement('unresolved-element');

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
  assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

  docWindow.customElements.define('unresolved-element', UnresolvedElement);
  doc.documentElement.appendChild(unresolvedElementInDoc);

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
  assert_equals(unresolvedElementInDoc.__proto__, UnresolvedElement.prototype);
  });
  }, 'Inserting an unresolved custom element into ' + documentName + ' must enqueue a custom element upgrade reaction');

  promise_test(function () {
  var unresolvedElement = document.createElement('unresolved-element');
  return getDocument().then(function (doc) {
  var docWindow = doc.defaultView;
  class UnresolvedElement extends docWindow.HTMLElement { };
  var unresolvedElementInDoc = doc.createElement('unresolved-element');
  doc.documentElement.appendChild(unresolvedElementInDoc);

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
  assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

  docWindow.customElements.define('unresolved-element', UnresolvedElement);

  assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
  assert_equals(unresolvedElementInDoc.__proto__, UnresolvedElement.prototype);
  });
  }, '"define" in ' + documentName + ' must enqueue a custom element upgrade reaction on a connected unresolved custom element');

  promise_test(function () {
  var unresolvedElement = document.createElement('unresolved-element');
  return getDocument().then(function (doc) {
  var docWindow = doc.defaultView;
  class UnresolvedElement extends docWindow.HTMLElement { };
  assert_false(unresolvedElement instanceof UnresolvedElement);
  docWindow.customElements.define('unresolved-element', UnresolvedElement);
  doc.adoptNode(unresolvedElement);
  assert_false(unresolvedElement instanceof UnresolvedElement);
  });
  }, 'Adopting (and leaving disconnceted) an unresolved custom element into ' + documentName + ' must not enqueue a custom element upgrade reaction');

  promise_test(function () {
  var unresolvedElement = document.createElement('unresolved-element');
  return getDocument().then(function (doc) {
  var docWindow = doc.defaultView;
  class UnresolvedElement extends docWindow.HTMLElement { };
  assert_false(unresolvedElement instanceof UnresolvedElement);
  docWindow.customElements.define('unresolved-element', UnresolvedElement);
  doc.documentElement.appendChild(unresolvedElement);
  assert_true(unresolvedElement instanceof UnresolvedElement);
  });
  }, 'Adopting and inserting an unresolved custom element into ' + documentName + ' must enqueue a custom element upgrade reaction');

 });

 test(() => {
  class ShadowDisabledElement extends HTMLElement {
  static get disabledFeatures() { return ['shadow']; }
  }
  let error = null;
  window.addEventListener('error', e => { error = e.error; }, {once: true});
  let element = document.createElement('shadow-disabled');
  element.attachShadow({mode: 'open'});
  customElements.define('shadow-disabled', ShadowDisabledElement);
  customElements.upgrade(element);
  assert_false(element instanceof ShadowDisabledElement,
  'Upgrading should fail.');
  assert_true(error instanceof DOMException);
  assert_equals(error.name, 'NotSupportedError');
 }, 'If definition\'s disable shadow is true and element\'s shadow root is ' +
  'non-null, then throw a "NotSupportedError" DOMException.');

 test(() => {
  var log = [];

  customElements.define('infinite-cloning-element-1',class extends HTMLElement {
  constructor() {
  super();
  log.push([this, 'begin']);
  // Potential infinite recursion:
  customElements.upgrade(this);
  log.push([this, 'end']);
  }
  });

  assert_equals(log.length, 2);
  const instance = document.querySelector("infinite-cloning-element-1");
  assert_array_equals(log[0], [instance, 'begin']);
  assert_array_equals(log[1], [instance, 'end']);
 }, 'Infinite constructor recursion with upgrade(this) should not be possible');

 test(() => {
  var log = [];

  customElements.define('infinite-cloning-element-2',class extends HTMLElement {
  constructor() {
  super();
  log.push([this, 'begin']);
  const b = document.querySelector("#b");
  b.remove();
  // While this constructor is running for "a", "b" is still
  // undefined, and so inserting it into the document will enqueue a
  // second upgrade reaction for "b" in addition to the one enqueued
  // by defining x-foo.
  document.body.appendChild(b);
  log.push([this, 'end']);
  }
  });

  assert_equals(log.length, 4);
  const instanceA = document.querySelector("#a");
  const instanceB = document.querySelector("#b");
  assert_array_equals(log[0], [instanceA, 'begin']);
  assert_array_equals(log[1], [instanceB, 'begin']);
  assert_array_equals(log[2], [instanceB, 'end']);
  assert_array_equals(log[3], [instanceA, 'end']);
 }, 'Infinite constructor recursion with appendChild should not be possible');


 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Custom Elements: Enqueue a custom element upgrade reaction</title>
	<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
	<meta name="assert" content="Enqueue a custom element upgrade reaction must upgrade a custom element">
	<link rel="help" href="https://dom.spec.whatwg.org/#concept-create-element">
	<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#concept-try-upgrade">
	<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#enqueue-a-custom-element-upgrade-reaction">
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<script src="resources/custom-elements-helpers.js"></script>
	</head>
	<body>
	<infinite-cloning-element-1></infinite-cloning-element-1>
	<infinite-cloning-element-2 id="a"></infinite-cloning-element-2>
	<infinite-cloning-element-2 id="b"></infinite-cloning-element-2>
	<div id="log"></div>
	<script>
	setup({allow_uncaught_exception:true});

	class PredefinedCustomElement extends HTMLElement {}
	customElements.define('predefined-custom-element', PredefinedCustomElement);

	var customElementNumber = 1;
	function generateNextCustomElementName() { return 'custom-' + customElementNumber++; }

	// Tests for documents without a browsing context.
	document_types().filter(function (entry) { return !entry.isOwner && !entry.hasBrowsingContext; }).forEach(function (entry) {
	var documentName = entry.name;
	var getDocument = entry.create;

	promise_test(function () {
	return getDocument().then(function (doc) {
	assert_false(doc.createElement('predefined-custom-element') instanceof PredefinedCustomElement);
	});
	}, 'Creating an element in ' + documentName + ' must not enqueue a custom element upgrade reaction'
	+ ' because the document does not have a browsing context');

	promise_test(function () {
	var name = generateNextCustomElementName();
	var unresolvedElement = document.createElement(name);

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype,
	'[[Prototype]] internal slot of the unresolved custom element must be the HTMLElement prototype');

	return getDocument().then(function (doc) {
	var unresolvedElementInDoc = doc.createElement(name);
	var prototype = (unresolvedElementInDoc.namespaceURI == 'http://www.w3.org/1999/xhtml' ? HTMLElement : Element).prototype;

	assert_equals(unresolvedElementInDoc.__proto__, prototype,
	'[[Prototype]] internal slot of the unresolved custom element must be the ' + prototype.toString() + ' prototype');
	var someCustomElement = class extends HTMLElement {};
	customElements.define(name, someCustomElement);
	assert_equals(unresolvedElementInDoc.__proto__, prototype, '"define" must not upgrade a disconnected unresolved custom elements');
	doc.documentElement.appendChild(unresolvedElementInDoc);
	assert_equals(unresolvedElementInDoc.__proto__, prototype,
	'Inserting an element into a document without a browsing context must not enqueue a custom element upgrade reaction');
	});
	}, 'Creating an element in ' + documentName + ' and inserting into the document must not enqueue a custom element upgrade reaction');

	promise_test(function () {
	var name = generateNextCustomElementName();
	var unresolvedElement = document.createElement(name);

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype,
	'[[Prototype]] internal slot of the unresolved custom element must be the HTMLElement prototype');

	return getDocument().then(function (doc) {
	var unresolvedElementInDoc = doc.createElement(name);
	var prototype = (unresolvedElementInDoc.namespaceURI == 'http://www.w3.org/1999/xhtml' ? HTMLElement : Element).prototype;

	assert_equals(unresolvedElementInDoc.__proto__, prototype,
	'[[Prototype]] internal slot of the unresolved custom element must be the ' + prototype.toString() + ' prototype');
	var someCustomElement = class extends HTMLElement {};
	customElements.define(name, someCustomElement);
	assert_equals(unresolvedElementInDoc.__proto__, prototype, '"define" must not upgrade a disconnected unresolved custom elements');
	document.body.appendChild(unresolvedElementInDoc);

	if (unresolvedElementInDoc.namespaceURI == 'http://www.w3.org/1999/xhtml') {
	assert_equals(unresolvedElementInDoc.__proto__, someCustomElement.prototype,
	'Inserting an element into a document with a browsing context must enqueue a custom element upgrade reaction');
	} else {
	assert_equals(unresolvedElementInDoc.__proto__, prototype,
	'Looking up a custom element definition must return null if the element is not in the HTML namespace');
	}
	});
	}, 'Creating an element in ' + documentName + ' and adopting back to a document with browsing context must enqueue a custom element upgrade reaction');

	});

	// Tests for documents with a browsing context.
	document_types().filter(function (entry) { return !entry.isOwner && entry.hasBrowsingContext; }).forEach(function (entry) {
	var documentName = entry.name;
	var getDocument = entry.create;

	promise_test(function () {
	return getDocument().then(function (doc) {
	assert_false(doc.createElement('predefined-custom-element') instanceof PredefinedCustomElement);
	});
	}, 'Creating an element in ' + documentName + ' must not enqueue a custom element upgrade reaction if there is no matching definition');

	promise_test(function () {
	return getDocument().then(function (doc) {
	var docWindow = doc.defaultView;
	class DistinctPredefinedCustomElement extends docWindow.HTMLElement { };
	docWindow.customElements.define('predefined-custom-element', DistinctPredefinedCustomElement);
	assert_true(doc.createElement('predefined-custom-element') instanceof DistinctPredefinedCustomElement);
	});
	}, 'Creating an element in ' + documentName + ' must enqueue a custom element upgrade reaction if there is a matching definition');

	promise_test(function () {
	var unresolvedElement = document.createElement('unresolved-element');
	return getDocument().then(function (doc) {
	var docWindow = doc.defaultView;
	class UnresolvedElement extends docWindow.HTMLElement { };
	var unresolvedElementInDoc = doc.createElement('unresolved-element');

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
	assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

	docWindow.customElements.define('unresolved-element', UnresolvedElement);

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
	assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

	});
	}, '"define" in ' + documentName + ' must not enqueue a custom element upgrade reaction on a disconnected unresolved custom element');

	promise_test(function () {
	var unresolvedElement = document.createElement('unresolved-element');
	return getDocument().then(function (doc) {
	var docWindow = doc.defaultView;
	class UnresolvedElement extends docWindow.HTMLElement { };
	var unresolvedElementInDoc = doc.createElement('unresolved-element');

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
	assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

	docWindow.customElements.define('unresolved-element', UnresolvedElement);
	doc.documentElement.appendChild(unresolvedElementInDoc);

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
	assert_equals(unresolvedElementInDoc.__proto__, UnresolvedElement.prototype);
	});
	}, 'Inserting an unresolved custom element into ' + documentName + ' must enqueue a custom element upgrade reaction');

	promise_test(function () {
	var unresolvedElement = document.createElement('unresolved-element');
	return getDocument().then(function (doc) {
	var docWindow = doc.defaultView;
	class UnresolvedElement extends docWindow.HTMLElement { };
	var unresolvedElementInDoc = doc.createElement('unresolved-element');
	doc.documentElement.appendChild(unresolvedElementInDoc);

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
	assert_equals(unresolvedElementInDoc.__proto__, docWindow.HTMLElement.prototype);

	docWindow.customElements.define('unresolved-element', UnresolvedElement);

	assert_equals(unresolvedElement.__proto__, HTMLElement.prototype);
	assert_equals(unresolvedElementInDoc.__proto__, UnresolvedElement.prototype);
	});
	}, '"define" in ' + documentName + ' must enqueue a custom element upgrade reaction on a connected unresolved custom element');

	promise_test(function () {
	var unresolvedElement = document.createElement('unresolved-element');
	return getDocument().then(function (doc) {
	var docWindow = doc.defaultView;
	class UnresolvedElement extends docWindow.HTMLElement { };
	assert_false(unresolvedElement instanceof UnresolvedElement);
	docWindow.customElements.define('unresolved-element', UnresolvedElement);
	doc.adoptNode(unresolvedElement);
	assert_false(unresolvedElement instanceof UnresolvedElement);
	});
	}, 'Adopting (and leaving disconnceted) an unresolved custom element into ' + documentName + ' must not enqueue a custom element upgrade reaction');

	promise_test(function () {
	var unresolvedElement = document.createElement('unresolved-element');
	return getDocument().then(function (doc) {
	var docWindow = doc.defaultView;
	class UnresolvedElement extends docWindow.HTMLElement { };
	assert_false(unresolvedElement instanceof UnresolvedElement);
	docWindow.customElements.define('unresolved-element', UnresolvedElement);
	doc.documentElement.appendChild(unresolvedElement);
	assert_true(unresolvedElement instanceof UnresolvedElement);
	});
	}, 'Adopting and inserting an unresolved custom element into ' + documentName + ' must enqueue a custom element upgrade reaction');

	});

	test(() => {
	class ShadowDisabledElement extends HTMLElement {
	static get disabledFeatures() { return ['shadow']; }
	}
	let error = null;
	window.addEventListener('error', e => { error = e.error; }, {once: true});
	let element = document.createElement('shadow-disabled');
	element.attachShadow({mode: 'open'});
	customElements.define('shadow-disabled', ShadowDisabledElement);
	customElements.upgrade(element);
	assert_false(element instanceof ShadowDisabledElement,
	'Upgrading should fail.');
	assert_true(error instanceof DOMException);
	assert_equals(error.name, 'NotSupportedError');
	}, 'If definition\'s disable shadow is true and element\'s shadow root is ' +
	'non-null, then throw a "NotSupportedError" DOMException.');

	test(() => {
	var log = [];

	customElements.define('infinite-cloning-element-1',class extends HTMLElement {
	constructor() {
	super();
	log.push([this, 'begin']);
	// Potential infinite recursion:
	customElements.upgrade(this);
	log.push([this, 'end']);
	}
	});

	assert_equals(log.length, 2);
	const instance = document.querySelector("infinite-cloning-element-1");
	assert_array_equals(log[0], [instance, 'begin']);
	assert_array_equals(log[1], [instance, 'end']);
	}, 'Infinite constructor recursion with upgrade(this) should not be possible');

	test(() => {
	var log = [];

	customElements.define('infinite-cloning-element-2',class extends HTMLElement {
	constructor() {
	super();
	log.push([this, 'begin']);
	const b = document.querySelector("#b");
	b.remove();
	// While this constructor is running for "a", "b" is still
	// undefined, and so inserting it into the document will enqueue a
	// second upgrade reaction for "b" in addition to the one enqueued
	// by defining x-foo.
	document.body.appendChild(b);
	log.push([this, 'end']);
	}
	});

	assert_equals(log.length, 4);
	const instanceA = document.querySelector("#a");
	const instanceB = document.querySelector("#b");
	assert_array_equals(log[0], [instanceA, 'begin']);
	assert_array_equals(log[1], [instanceB, 'begin']);
	assert_array_equals(log[2], [instanceB, 'end']);
	assert_array_equals(log[3], [instanceA, 'end']);
	}, 'Infinite constructor recursion with appendChild should not be possible');


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