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<!doctype html>
<meta charset=utf-8>
<title>CSSPseudoElement.getAnimations() for CSS transitions</title>
<link rel="help" href="https://drafts.csswg.org/css-transitions-2/#animation-composite-order">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/helper.js"></script>
<style>
.init::before {
content: '';
height: 0px;
width: 0px;
opacity: 0;
transition: all 100s;
}
.change::before {
height: 100px;
width: 100px;
opacity: 1;
}
</style>
<div id="log"></div>
<script>
'use strict';
test(t => {
const div = addDiv(t, { class: 'init' });
getComputedStyle(div).width;
div.classList.add('change');
// Sanity checks
assert_equals(document.getAnimations().length, 3,
'Got expected number of animations on document');
const pseudoTarget = document.getAnimations()[0].effect.target;
assert_class_string(pseudoTarget, 'CSSPseudoElement',
'Got pseudo-element target');
// Check animations returned from the pseudo element are in correct order
const anims = pseudoTarget.getAnimations();
assert_equals(anims.length, 3,
'Got expected number of animations on pseudo-element');
assert_equals(anims[0].transitionProperty, 'height');
assert_equals(anims[1].transitionProperty, 'opacity');
assert_equals(anims[2].transitionProperty, 'width');
}, 'getAnimations sorts simultaneous transitions by name');
</script>
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