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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /custom-elements/upgrading.html - WPT Dashboard Interop Dashboard
<!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://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(Object.getPrototypeOf(unresolvedElement), 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(Object.getPrototypeOf(unresolvedElementInDoc), 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(Object.getPrototypeOf(unresolvedElementInDoc), prototype, '"define" must not upgrade a disconnected unresolved custom elements');
doc.documentElement.appendChild(unresolvedElementInDoc);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), 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(Object.getPrototypeOf(unresolvedElement), 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(Object.getPrototypeOf(unresolvedElementInDoc), 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(Object.getPrototypeOf(unresolvedElementInDoc), prototype, '"define" must not upgrade a disconnected unresolved custom elements');
document.body.appendChild(unresolvedElementInDoc);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), someCustomElement.prototype,
'Inserting an element into a document with a browsing context must enqueue a custom element upgrade reaction');
} else {
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), 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(Object.getPrototypeOf(unresolvedElement), HTMLElement.prototype);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), docWindow.HTMLElement.prototype);
docWindow.customElements.define('unresolved-element', UnresolvedElement);
assert_equals(Object.getPrototypeOf(unresolvedElement), HTMLElement.prototype);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), 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(Object.getPrototypeOf(unresolvedElement), HTMLElement.prototype);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), docWindow.HTMLElement.prototype);
docWindow.customElements.define('unresolved-element', UnresolvedElement);
doc.documentElement.appendChild(unresolvedElementInDoc);
assert_equals(Object.getPrototypeOf(unresolvedElement), HTMLElement.prototype);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), 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(Object.getPrototypeOf(unresolvedElement), HTMLElement.prototype);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), docWindow.HTMLElement.prototype);
docWindow.customElements.define('unresolved-element', UnresolvedElement);
assert_equals(Object.getPrototypeOf(unresolvedElement), HTMLElement.prototype);
assert_equals(Object.getPrototypeOf(unresolvedElementInDoc), 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>