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<!doctype html>
<meta charset=utf-8>
<title>Timelines</title>
<link rel="help" href="https://drafts.csswg.org/web-animations/#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';
promise_test(t => {
const valueAtStart = document.timeline.currentTime;
const timeAtStart = window.performance.now();
while (window.performance.now() - timeAtStart < 50) {
// Wait 50ms
}
assert_equals(document.timeline.currentTime, valueAtStart,
'Timeline time does not change within an animation frame');
return waitForAnimationFrames(1).then(() => {
assert_greater_than(document.timeline.currentTime, valueAtStart,
'Timeline time increases between animation frames');
});
}, 'Timeline time increases once per animation frame');
async_test(t => {
const iframe = document.createElement('iframe');
iframe.width = 10;
iframe.height = 10;
iframe.addEventListener('load', t.step_func(() => {
const iframeTimeline = iframe.contentDocument.timeline;
const valueAtStart = iframeTimeline.currentTime;
const timeAtStart = window.performance.now();
while (iframe.contentWindow.performance.now() - timeAtStart < 50) {
// Wait 50ms
}
assert_equals(iframeTimeline.currentTime, valueAtStart,
'Timeline time within an iframe does not change within an '
+ ' animation frame');
iframe.contentWindow.requestAnimationFrame(t.step_func_done(() => {
assert_greater_than(iframeTimeline.currentTime, valueAtStart,
'Timeline time within an iframe increases between animation frames');
iframe.remove();
}));
}));
document.body.appendChild(iframe);
}, 'Timeline time increases once per animation frame in an iframe');
async_test(t => {
const startTime = document.timeline.currentTime;
let firstRafTime;
requestAnimationFrame(() => {
t.step(() => {
assert_greater_than_equal(document.timeline.currentTime, startTime,
'Timeline time should have progressed');
firstRafTime = document.timeline.currentTime;
});
});
requestAnimationFrame(() => {
t.step(() => {
assert_equals(document.timeline.currentTime, firstRafTime,
'Timeline time should be the same');
});
t.done();
});
}, 'Timeline time should be the same for all RAF callbacks in an animation'
+ ' frame');
async_test(t => {
const div = createDiv(t);
const animation = div.animate(null, 100 * MS_PER_SEC);
animation.ready.then(t.step_func(() => {
const readyTimelineTime = document.timeline.currentTime;
requestAnimationFrame(t.step_func_done(() => {
assert_equals(readyTimelineTime, document.timeline.currentTime,
'There should be a microtask checkpoint');
}));
}));
}, 'Performs a microtask checkpoint after updating timelins');
</script>
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