mirror of
https://github.com/servo/servo.git
synced 2025-07-01 12:33:40 +01:00
37 lines
1.4 KiB
HTML
37 lines
1.4 KiB
HTML
<!doctype html>
|
|
<meta charset=utf-8>
|
|
<title>Document timelines</title>
|
|
<link rel="help" href="https://drafts.csswg.org/web-animations/#document-timelines">
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
<script src="../../testcommon.js"></script>
|
|
<div id="log"></div>
|
|
<script>
|
|
'use strict';
|
|
|
|
async_test(t => {
|
|
assert_true(document.timeline.currentTime > 0,
|
|
'The current time is initially is positive');
|
|
// document.timeline.currentTime should be set even before document
|
|
// load fires. We expect this code to be run before document load and hence
|
|
// the above assertion is sufficient.
|
|
// If the following assertion fails, this test needs to be redesigned.
|
|
assert_true(document.readyState !== 'complete',
|
|
'Test is running prior to document load');
|
|
|
|
// Test that the document timeline's current time is measured from
|
|
// navigationStart.
|
|
//
|
|
// We can't just compare document.timeline.currentTime to
|
|
// window.performance.now() because currentTime is only updated on a sample
|
|
// so we use requestAnimationFrame instead.
|
|
window.requestAnimationFrame(rafTime => {
|
|
t.step(() => {
|
|
assert_equals(document.timeline.currentTime, rafTime,
|
|
'The current time matches requestAnimationFrame time');
|
|
});
|
|
t.done();
|
|
});
|
|
}, 'Document timelines report current time relative to navigationStart');
|
|
|
|
</script>
|