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<!DOCTYPE html>
<meta charset=utf-8>
<title>Animation.pause</title>
<link rel="help" href="https://drafts.csswg.org/web-animations/#dom-animation-pause">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../testcommon.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';
promise_test(t => {
const div = createDiv(t);
const animation = div.animate({}, 1000 * MS_PER_SEC);
let previousCurrentTime = animation.currentTime;
return animation.ready.then(waitForAnimationFrames(1)).then(() => {
assert_true(animation.currentTime >= previousCurrentTime,
'currentTime is initially increasing');
animation.pause();
return animation.ready;
}).then(() => {
previousCurrentTime = animation.currentTime;
return waitForAnimationFrames(1);
}).then(() => {
assert_equals(animation.currentTime, previousCurrentTime,
'currentTime does not increase after calling pause()');
});
}, 'pause() a running animation');
promise_test(t => {
const div = createDiv(t);
const animation = div.animate({}, 1000 * MS_PER_SEC);
// Go to idle state then pause
animation.cancel();
animation.pause();
assert_equals(animation.currentTime, 0, 'currentTime is set to 0');
assert_equals(animation.startTime, null, 'startTime is not set');
assert_equals(animation.playState, 'paused', 'in paused play state');
assert_true(animation.pending, 'initially pause-pending');
// Check it still resolves as expected
return animation.ready.then(() => {
assert_false(animation.pending, 'no longer pending');
assert_equals(animation.currentTime, 0,
'keeps the initially set currentTime');
});
}, 'pause() from idle');
promise_test(t => {
const div = createDiv(t);
const animation = div.animate({}, 1000 * MS_PER_SEC);
animation.cancel();
animation.playbackRate = -1;
animation.pause();
assert_equals(animation.currentTime, 1000 * MS_PER_SEC,
'currentTime is set to the effect end');
return animation.ready.then(() => {
assert_equals(animation.currentTime, 1000 * MS_PER_SEC,
'keeps the initially set currentTime');
});
}, 'pause() from idle with a negative playbackRate');
test(t => {
const div = createDiv(t);
const animation = div.animate({}, {duration: 1000 * MS_PER_SEC,
iterations: Infinity});
animation.cancel();
animation.playbackRate = -1;
assert_throws_dom('InvalidStateError',
() => { animation.pause(); },
'Expect InvalidStateError exception on calling pause() ' +
'from idle with a negative playbackRate and ' +
'infinite-duration animation');
}, 'pause() from idle with a negative playbackRate and endless effect');
promise_test(t => {
const div = createDiv(t);
const animation = div.animate({}, 1000 * MS_PER_SEC);
return animation.ready
.then(animation => {
animation.finish();
animation.pause();
return animation.ready;
}).then(animation => {
assert_equals(animation.currentTime, 1000 * MS_PER_SEC,
'currentTime after pausing finished animation');
});
}, 'pause() on a finished animation');
</script>
</body>
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