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<!doctype html>
<meta charset=utf-8>
<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';
test(t => {
var div = addDiv(t, { style: 'margin-left: 100px' });
div.animate([{ marginLeft: '200px' }], 100 * MS_PER_SEC);
assert_equals(getComputedStyle(div).marginLeft, '100px',
'The initial margin-left value should be the base value');
}, 'Initial margin-left value for an animation with no keyframe at offset 0');
test(t => {
var div = addDiv(t, { style: 'margin-left: 100px' });
div.animate([{ offset: 0, marginLeft: '200px' },
{ offset: 1, marginLeft: '300px' }],
100 * MS_PER_SEC);
div.animate([{ marginLeft: '200px' }], 100 * MS_PER_SEC);
assert_equals(getComputedStyle(div).marginLeft, '200px',
'The initial margin-left value should be the initial value ' +
'of lower-priority animation');
}, 'Initial margin-left value for an animation with no keyframe at offset 0 ' +
'is that of lower-priority animations');
test(t => {
var div = addDiv(t, { style: 'margin-left: 100px;' +
'transition: margin-left 100s -50s linear'});
flushComputedStyle(div);
div.style.marginLeft = '200px';
flushComputedStyle(div);
div.animate([{ marginLeft: '300px' }], 100 * MS_PER_SEC);
assert_equals(getComputedStyle(div).marginLeft, '150px',
'The initial margin-left value should be the initial value ' +
'of the transition');
}, 'Initial margin-left value for an animation with no keyframe at offset 0 ' +
'is that of transition');
test(t => {
var div = addDiv(t, { style: 'margin-left: 100px' });
var animation = div.animate([{ offset: 0, marginLeft: '200px' }],
100 * MS_PER_SEC);
animation.currentTime = 50 * MS_PER_SEC;
assert_equals(getComputedStyle(div).marginLeft, '150px',
'The margin-left value at 50% should be the base value');
}, 'margin-left value at 50% for an animation with no keyframe at offset 1');
test(t => {
var div = addDiv(t, { style: 'margin-left: 100px' });
var lowerAnimation = div.animate([{ offset: 0, marginLeft: '200px' },
{ offset: 1, marginLeft: '300px' }],
100 * MS_PER_SEC);
var higherAnimation = div.animate([{ offset: 0, marginLeft: '400px' }],
100 * MS_PER_SEC);
lowerAnimation.currentTime = 50 * MS_PER_SEC;
higherAnimation.currentTime = 50 * MS_PER_SEC;
// (250px + 400px) * 0.5
assert_equals(getComputedStyle(div).marginLeft, '325px',
'The margin-left value at 50% should be additive value of ' +
'lower-priority animation and higher-priority animation');
}, 'margin-left value at 50% for an animation with no keyframe at offset 1 ' +
'is that of lower-priority animations');
test(t => {
var div = addDiv(t, { style: 'margin-left: 100px;' +
'transition: margin-left 100s linear' });
flushComputedStyle(div);
div.style.marginLeft = '300px';
flushComputedStyle(div);
div.animate([{ offset: 0, marginLeft: '200px' }], 100 * MS_PER_SEC);
div.getAnimations().forEach(animation => {
animation.currentTime = 50 * MS_PER_SEC;
});
// (200px + 200px) * 0.5
assert_equals(getComputedStyle(div).marginLeft, '200px',
'The margin-left value at 50% should be additive value of ' +
'the transition and animation');
}, 'margin-left value at 50% for an animation with no keyframe at offset 1 ' +
'is that of transition');
test(t => {
var div = addDiv(t, { style: 'margin-left: 100px' });
var animation = div.animate([{ offset: 0, marginLeft: '200px' }],
{ duration: 100 * MS_PER_SEC,
iterationStart: 1,
iterationComposite: 'accumulate' });
assert_equals(getComputedStyle(div).marginLeft, '300px',
'The margin-left value should be additive value of the ' +
'accumulation of the initial value onto the base value ');
}, 'margin-left value for an animation with no keyframe at offset 1 and its ' +
'iterationComposite is accumulate');
</script>
</body>
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