<!DOCTYPE html>
<meta charset=utf-8>
<title>Test basic functionality of scroll linked animation.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="testcommon.js"></script>
<style>
.scroller {
overflow: auto;
height: 100px;
width: 100px;
will-change: transform;
}
.contents {
height: 1000px;
width: 100%;
}
</style>
<div id="log"></div>
<script>
'use strict';
promise_test(async t => {
const animation = createScrollLinkedAnimation(t);
const scroller = animation.timeline.source;
// Ensure we have a valid animation frame time before continuing the test.
// This is so that we can properly determine frame advancement after the
// style change.
await waitForNextFrame();
// Make the scroll timeline inactive.
scroller.style.overflow = 'visible';
// Wait for new animation frame which allows the timeline to compute new
// current time.
await waitForNextFrame();
assert_equals(animation.timeline.currentTime, null,
'Sanity check the timeline is inactive.');
// Play the animation when the timeline is inactive.
animation.play();
assert_equals(animation.currentTime, null,
'The current time is null when the timeline is inactive.');
assert_equals(animation.startTime, null,
'The start time is unresolved while play-pending.');
await waitForNextFrame();
assert_true(animation.pending,
'Animation has play pending task while timeline is inactive.');
assert_equals(animation.playState, 'running',
`State is 'running' in Pending state.`);
}, `Play pending task doesn't run when the timeline is inactive.`);
promise_test(async t => {
const animation = createScrollLinkedAnimation(t);
const scroller = animation.timeline.source;
await waitForNextFrame();
// Make the scroll timeline inactive.
scroller.style.overflow = 'visible';
// Wait for new animation frame which allows the timeline to compute new
// current time.
await waitForNextFrame();
assert_equals(animation.timeline.currentTime, null,
'Sanity check the timeline is inactive.');
// Play the animation when the timeline is inactive.
animation.play();
// Make the scroll timeline active.
scroller.style.overflow = 'auto';
await animation.ready;
// Ready promise is resolved as a result of the timeline becoming active.
assert_percents_equal(animation.currentTime, 0,
'Animation current time is resolved when the animation is ready.');
assert_percents_equal(animation.startTime, 0,
'Animation start time is resolved when the animation is ready.');
}, 'Animation start and current times are correct if scroll timeline is ' +
'activated after animation.play call.');
promise_test(async t => {
const animation = createScrollLinkedAnimation(t);
const scroller = animation.timeline.source;
const target = animation.effect.target;
await waitForNextFrame();
// Make the scroll timeline inactive.
scroller.style.overflow = 'visible';
scroller.scrollTop;
// Wait for new animation frame which allows the timeline to compute new
// current time.
await waitForNextFrame();
assert_equals(animation.timeline.currentTime, null,
'Sanity check the timeline is inactive.');
// Set start time when the timeline is inactive.
animation.startTime = CSSNumericValue.parse("0%");
assert_equals(animation.currentTime, null,
'Sanity check current time is unresolved when the timeline ' +
'is inactive.');
// Make the scroll timeline active.
scroller.style.overflow = 'auto';
// Wait for new animation frame which allows the timeline to compute new
// current time.
await waitForNextFrame();
assert_percents_equal(animation.currentTime, 0,
'Animation current time is resolved when the timeline is active.');
assert_percents_equal(animation.startTime, 0,
'Animation start time is resolved.');
assert_percents_equal(animation.effect.getComputedTiming().localTime, 0,
'Effect local time is resolved when the timeline is active.');
assert_equals(Number(getComputedStyle(target).opacity), 0,
'Animation has an effect when the timeline is active.');
}, 'Animation start and current times are correct if scroll timeline is ' +
'activated after setting start time.');
promise_test(async t => {
const animation = createScrollLinkedAnimation(t);
const scroller = animation.timeline.source;
const maxScroll = scroller.scrollHeight - scroller.clientHeight;
const target = animation.effect.target;
await waitForNextFrame();
// Advance the scroller.
scroller.scrollTop = 0.2 * maxScroll;
// Wait for new animation frame which allows the timeline to compute new
// current time.
await waitForNextFrame();
// Play the animation when the timeline is active.
animation.play();
await animation.ready;
// Make the scroll timeline inactive.
scroller.style.overflow = 'visible';
scroller.scrollTop;
await waitForNextFrame();
assert_equals(animation.timeline.currentTime, null,
'Sanity check the timeline is inactive.');
assert_equals(animation.playState, 'running',
`State is 'running' when the timeline is inactive.`);
assert_equals(animation.currentTime, null,
'Current time is unresolved when the timeline is inactive.');
assert_percents_equal(animation.startTime, 0,
'Start time is zero when the timeline is inactive.');
assert_equals(animation.effect.getComputedTiming().localTime, null,
'Effect local time is null when the timeline is inactive.');
assert_equals(Number(getComputedStyle(target).opacity), 1,
'Animation does not have an effect when the timeline is inactive.');
// Make the scroll timeline active.
scroller.style.overflow = 'auto';
await waitForNextFrame();
assert_equals(animation.playState, 'running',
`State is 'running' when the timeline is active.`);
assert_percents_equal(animation.currentTime, 20,
'Current time is resolved when the timeline is active.');
assert_percents_equal(animation.startTime, 0,
'Start time is zero when the timeline is active.');
assert_percents_equal(animation.effect.getComputedTiming().localTime, 20,
'Effect local time is resolved when the timeline is active.');
assert_equals(Number(getComputedStyle(target).opacity), 0.2,
'Animation has an effect when the timeline is active.');
}, 'Animation current time is correct when the timeline becomes newly ' +
'inactive and then active again.');
</script>
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