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<!doctype html>
<meta charset=utf-8>
<title>Element.getAnimations() for CSS transitions</title>
<link rel="help" href="https://drafts.csswg.org/css-transitions-2/#animation-composite-order">
<!-- TODO: Add a more specific link for this once it is specified. -->
<link rel="help" href="https://drafts.csswg.org/css-transitions-2/#csstransition">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/helper.js"></script>
<div id="log"></div>
<script>
'use strict';
promise_test(async t => {
const div = addDiv(t);
div.style.left = '0px';
div.style.top = '0px';
getComputedStyle(div).transitionProperty;
div.style.transition = 'all 100s';
div.style.left = '100px';
div.style.top = '100px';
assert_equals(div.getAnimations().length, 2);
}, 'getAnimations returns one Animation per transitioning property');
test(t => {
const div = addDiv(t, { style: 'left: 0px; transition: all 100s' });
getComputedStyle(div).left;
div.style.left = '100px';
assert_class_string(div.getAnimations()[0], 'CSSTransition',
'Interface of returned animation is CSSTransition');
}, 'getAnimations returns CSSTransition objects for CSS Transitions');
promise_test(async t => {
const div = addDiv(t);
div.style.left = '0px';
getComputedStyle(div).left;
div.style.transition = 'all 0.01s';
div.style.left = '100px';
const animation = div.getAnimations()[0];
await animation.finished;
assert_equals(div.getAnimations().length, 0);
}, 'getAnimations does not return finished CSS Transitions');
test(t => {
const div = addDiv(t);
// animation-duration is not animatable
div.style.animationDuration = '10s';
getComputedStyle(div).animationDuration;
div.style.transition = 'all 100s';
div.style.animationDuration = '100s';
assert_equals(div.getAnimations().length, 0);
}, 'getAnimations does not return a transition for a non-animatable property');
test(t => {
const div = addDiv(t);
div.style.setProperty('-vendor-unsupported', '0px', '');
getComputedStyle(div).transitionProperty;
div.style.transition = 'all 100s';
div.style.setProperty('-vendor-unsupported', '100px', '');
assert_equals(div.getAnimations().length, 0);
}, 'getAnimations does not return a transition for an unsupposed property');
test(t => {
const div = addDiv(t, { style: 'transform: translate(0px); ' +
'opacity: 0; ' +
'border-width: 0px; ' + // Shorthand
'border-style: solid' });
getComputedStyle(div).transform;
div.style.transition = 'all 100s';
div.style.transform = 'translate(100px)';
div.style.opacity = '1';
div.style.borderWidth = '1px';
const animations = div.getAnimations();
assert_equals(animations.length, 6,
'Generated expected number of transitions');
assert_equals(animations[0].transitionProperty, 'border-bottom-width');
assert_equals(animations[1].transitionProperty, 'border-left-width');
assert_equals(animations[2].transitionProperty, 'border-right-width');
assert_equals(animations[3].transitionProperty, 'border-top-width');
assert_equals(animations[4].transitionProperty, 'opacity');
assert_equals(animations[5].transitionProperty, 'transform');
}, 'getAnimations sorts simultaneous transitions by name');
test(t => {
const div = addDiv(t, { style: 'transform: translate(0px); ' +
'opacity: 0' });
getComputedStyle(div).transform;
div.style.transition = 'all 100s';
div.style.transform = 'translate(100px)';
assert_equals(div.getAnimations().length, 1,
'Initially there is only one (transform) transition');
div.style.opacity = '1';
assert_equals(div.getAnimations().length, 2,
'Then a second (opacity) transition is added');
const animations = div.getAnimations();
assert_equals(animations[0].transitionProperty, 'transform');
assert_equals(animations[1].transitionProperty, 'opacity');
}, 'getAnimations sorts transitions by when they were generated');
</script>
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