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Unified Diff: third_party/WebKit/LayoutTests/imported/wpt/custom-elements/HTMLElement-constructor.html

Issue 2360123002: Import wpt@3801ab5834101113e5f53bfb57e3c76b2b87ecbb (Closed)
Patch Set: Mark the failing test to Win only Created 4 years, 3 months ago
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Index: third_party/WebKit/LayoutTests/imported/wpt/custom-elements/HTMLElement-constructor.html
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/custom-elements/HTMLElement-constructor.html b/third_party/WebKit/LayoutTests/imported/wpt/custom-elements/HTMLElement-constructor.html
new file mode 100644
index 0000000000000000000000000000000000000000..1ed625f63bbb3025f8df7ae75e75b0c69ebc9a96
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/imported/wpt/custom-elements/HTMLElement-constructor.html
@@ -0,0 +1,84 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Custom Elements: HTMLElement must allow subclassing</title>
+<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
+<meta name="assert" content="HTMLElement must allow subclassing">
+<link rel="help" href="https://html.spec.whatwg.org/#html-element-constructors">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"></div>
+<script>
+
+test(function () {
+ customElements.define('html-custom-element', HTMLElement);
+ assert_throws({'name': 'TypeError'}, function () { new HTMLElement(); });
+}, 'HTMLElement constructor must throw a TypeError when NewTarget is equal to itself');
+
+test(function () {
+ customElements.define('html-proxy-custom-element', new Proxy(HTMLElement, {}));
+ assert_throws({'name': 'TypeError'}, function () { new HTMLElement(); });
+}, 'HTMLElement constructor must throw a TypeError when NewTarget is equal to itself via a Proxy object');
+
+test(function () {
+ class SomeCustomElement extends HTMLElement {};
+ assert_throws({'name': 'TypeError'}, function () { new SomeCustomElement; });
+}, 'HTMLElement constructor must throw TypeError when it has not been defined by customElements.define');
+
+test(function () {
+ class CustomElementWithInferredTagName extends HTMLElement {};
+ customElements.define('inferred-name', CustomElementWithInferredTagName);
+
+ var instance = new CustomElementWithInferredTagName;
+ assert_true(instance instanceof Element, 'A custom element must inherit from Element');
+ assert_true(instance instanceof Node, 'A custom element must inherit from Node');
+ assert_equals(instance.localName, 'inferred-name');
+ assert_equals(instance.nodeName, 'INFERRED-NAME');
+ assert_equals(instance.namespaceURI, 'http://www.w3.org/1999/xhtml', 'A custom HTML element must use HTML namespace');
+
+ document.body.appendChild(instance);
+ assert_equals(document.body.lastChild, instance,
+ 'document.body.appendChild must be able to insert a custom element');
+ assert_equals(document.querySelector('inferred-name'), instance,
+ 'document.querySelector must be able to find a custom element by its tag name');
+
+}, 'HTMLElement constructor must infer the tag name from the element interface');
+
+test(function () {
+ class ConcreteCustomElement extends HTMLElement { };
+ class SubCustomElement extends ConcreteCustomElement { };
+ customElements.define('concrete-custom-element', ConcreteCustomElement);
+ customElements.define('sub-custom-element', SubCustomElement);
+
+ var instance = new ConcreteCustomElement();
+ assert_true(instance instanceof ConcreteCustomElement);
+ assert_false(instance instanceof SubCustomElement);
+ assert_equals(instance.localName, 'concrete-custom-element');
+ assert_equals(instance.nodeName, 'CONCRETE-CUSTOM-ELEMENT');
+
+ var instance = new SubCustomElement();
+ assert_true(instance instanceof ConcreteCustomElement);
+ assert_true(instance instanceof SubCustomElement);
+ assert_equals(instance.localName, 'sub-custom-element');
+ assert_equals(instance.nodeName, 'SUB-CUSTOM-ELEMENT');
+
+}, 'HTMLElement constructor must allow subclassing a custom element');
+
+test(function () {
+ class AbstractCustomElement extends HTMLElement { };
+ class ConcreteSubCustomElement extends AbstractCustomElement { };
+ customElements.define('concrete-sub-custom-element', ConcreteSubCustomElement);
+
+ var instance = new ConcreteSubCustomElement();
+ assert_true(instance instanceof AbstractCustomElement);
+ assert_true(instance instanceof ConcreteSubCustomElement);
+ assert_equals(instance.localName, 'concrete-sub-custom-element');
+ assert_equals(instance.nodeName, 'CONCRETE-SUB-CUSTOM-ELEMENT');
+
+}, 'HTMLElement constructor must allow subclassing an user-defined subclass of HTMLElement');
+
+</script>
+</body>
+</html>

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