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<!doctype html>
<html>
<head>
<meta charset=utf-8>
<title>CSS Transitions Test: transitionend event with negative delay</title>
<meta name="assert" content="Test checks that transitionend event is triggered for duration time being canceled out by negative delay">
<link rel="help" title="2.4. The 'transition-delay' Property" href="http://www.w3.org/TR/css3-transitions/#transition-delay-property">
<link rel="help" title="5. Transition Events" href="http://www.w3.org/TR/css3-transitions/#transition-events">
<link rel="author" title="Rodney Rehm" href="http://rodneyrehm.de/en/">
<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(t => {
const div = addDiv(t, { style: 'transition: all .02s -.01s; ' +
'padding-left: 1px' });
getComputedStyle(div).paddingLeft;
div.style.paddingLeft = '10px';
const watcher = new EventWatcher(t, div, [ 'transitionend' ]);
return watcher.wait_for('transitionend').then(evt => {
assert_end_events_equal(evt, 'padding-left', 0.02);
});
}, 'duration: 0.02s, delay: -0.01s');
</script>
</body>
</html>
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