| <!doctype html> |
| <meta charset=utf-8> |
| <title>Document.timeline</title> |
| <link rel="help" href="https://drafts.csswg.org/web-animations/#dom-document-timeline"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../../testcommon.js"></script> |
| <div id="log"></div> |
| <iframe width="10" height="10" id="iframe"></iframe> |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| assert_equals(document.timeline, document.timeline, |
| 'Document.timeline returns the same object every time'); |
| const iframe = document.getElementById('iframe'); |
| assert_not_equals(document.timeline, iframe.contentDocument.timeline, |
| 'Document.timeline returns a different object for each document'); |
| assert_not_equals(iframe.contentDocument.timeline, null, |
| 'Document.timeline on an iframe is not null'); |
| }, 'Document.timeline returns the default document timeline'); |
| |
| </script> |