@webcomponents/custom-elements
Version:
HTML Custom Elements Polyfill
43 lines (38 loc) • 1.57 kB
HTML
<html>
<head>
<title>customElements#polyfillWrapFlushCallback</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>
/**
* @license
* Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
* This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
* The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
* The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
* Code distributed by Google as part of the polymer project is also
* subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/
test('Elements are upgraded when created imperatively, even if the flush ' +
'callback has not been called.', function() {
let flush = undefined;
customElements.polyfillWrapFlushCallback(fn => {
flush = fn;
});
class CustomElement0 extends HTMLElement {}
customElements.define('custom-element-0', CustomElement0);
assert.equal(customElements.get('custom-element-0'), CustomElement0);
const element = document.createElement('custom-element-0');
assert.instanceOf(element, CustomElement0);
flush();
});
</script>
</body>
</html>