| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>DocumentTimeline constructor tests</title> |
| <link rel="help" href="https://drafts.csswg.org/web-animations/#the-documenttimeline-interface"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../../testcommon.js"></script> |
| <script src="../../resources/timing-override.js"></script> |
| <body> |
| <div id="log"></div> |
| <script> |
| 'use strict'; |
| |
| test(t => { |
| const timeline = new DocumentTimeline(); |
| |
| assert_times_equal(timeline.currentTime, document.timeline.currentTime); |
| }, 'An origin time of zero is used when none is supplied'); |
| |
| test(t => { |
| const timeline = new DocumentTimeline({ originTime: 0 }); |
| assert_times_equal(timeline.currentTime, document.timeline.currentTime); |
| }, 'A zero origin time produces a document timeline with a current time ' + |
| 'identical to the default document timeline'); |
| |
| test(t => { |
| const timeline = new DocumentTimeline({ originTime: 10 * MS_PER_SEC }); |
| |
| assert_times_equal(timeline.currentTime, |
| (document.timeline.currentTime - 10 * MS_PER_SEC)); |
| }, 'A positive origin time makes the document timeline\'s current time lag ' + |
| 'behind the default document timeline'); |
| |
| test(t => { |
| const timeline = new DocumentTimeline({ originTime: -10 * MS_PER_SEC }); |
| |
| assert_times_equal(timeline.currentTime, |
| (document.timeline.currentTime + 10 * MS_PER_SEC)); |
| }, 'A negative origin time makes the document timeline\'s current time run ' + |
| 'ahead of the default document timeline'); |
| |
| </script> |
| </body> |
