dom/tests/mochitest/webcomponents/test_custom_element_get.html
author Mike Park <mikeparkms@gmail.com>
Wed, 25 Oct 2017 14:36:03 -0400
changeset 444610 4e0bc9f7b713ffe30665cc4c8a5fb1e4daaea97f
parent 359979 a2d8c1189368b7b686ac4405928ce12b7dca4254
child 531525 ba6f655fd68963530c866d0d4a48c3db3d307777
permissions -rw-r--r--
Bug 1411402 - Change mouse cursor when hovering/clicking shapes highlighter markers. r=pbro MozReview-Commit-ID: 9idXQmwatiW

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1275838
-->
<head>
  <title>Test custom elements get function.</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<iframe id="iframe"></iframe>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1275838">Bug 1275838</a>
<script>
const testWindow = iframe.contentDocument.defaultView;
const customElements = testWindow.customElements;

ok('customElements' in testWindow, '"window.customElements" exists');
ok('define' in customElements, '"window.customElements.define" exists');
ok('get' in customElements, '"window.customElements.get" exists');

const name = 'test-get-existing';
class C extends HTMLElement {};
customElements.define(name, C);
is(customElements.get(name), C, 'get() returns the constructor');
is(customElements.get('test-get-not-defined'), undefined,
                      'get() returns undefined for not-defined name');

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