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<!doctype html>
<html>
<head>
<meta charset=utf-8>
<title>CSS Transitions Test: Transitions do not run for a ::marker-element that is not being rendered</title>
<link rel="help" title="Starting transitions"
href="https://drafts.csswg.org/css-transitions/#starting">
<script src="/resources/testharness.js" type="text/javascript"></script>
<script src="/resources/testharnessreport.js" type="text/javascript"></script>
<script src="./support/helper.js" type="text/javascript"></script>
</head>
<body>
<div id="log"></div>
<script>
promise_test(async t => {
addStyle(t, {
'.init::marker': 'content: ""; color: red; transition: color 100s;',
'.change::marker': 'color: green',
});
// Create element (and pseudo-element) and attach event listeners
const div = addDiv(t, { 'style': 'display: list-item' });
div.classList.add('init');
const eventWatcher = new EventWatcher(t, div, [
'transitionrun',
'transitioncancel',
]);
// Trigger transition
getComputedStyle(div).color;
div.classList.add('change');
getComputedStyle(div).color;
await eventWatcher.wait_for('transitionrun');
// Make the parent element no longer display: list-item so that the pseudo
// element no longer renders
div.style.display = 'block';
await eventWatcher.wait_for('transitioncancel');
}, 'Transitions on ::marker pseudo-elements are canceled when the'
+ ' parent display type is no longer list-item');
</script>
</body>
</html>
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