@webcomponents/custom-elements
Version:
HTML Custom Elements Polyfill
59 lines (49 loc) • 1.42 kB
HTML
<html>
<head>
<title>Document#createElement</title>
<script>
(window.customElements = window.customElements || {}).forcePolyfill = true;
</script>
<script src="../../../../es6-promise/dist/es6-promise.auto.min.js"></script>
<script src="../../../../web-component-tester/browser.js"></script>
<script src="../../../custom-elements.min.js"></script>
</head>
<body>
<script>
function generateLocalName() {
return 'test-element-' + Math.random().toString(32).substring(2);
}
function defineWithLocalName(localName, observedAttributes) {
const constructor = class extends HTMLElement {
constructor() {
super();
this.constructed = true;
this.connectedCallbackCount = 0;
this.disconnectedCallbackCount = 0;
}
connectedCallback() {
this.connectedCallbackCount++;
}
disconnectedCallback() {
this.disconnectedCallbackCount++;
}
}
customElements.define(localName, constructor);
return constructor;
}
suite('Creating a custom element.', function() {
let localName;
let constructor;
setup(function() {
localName = generateLocalName();
constructor = defineWithLocalName(localName);
});
test('Creating a defined custom element creates an instance of that custom element.', function() {
const element = document.createElement(localName);
assert(element instanceof constructor);
});
});
</script>
</body>
</html>