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+<!doctype html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>CSS Transitions Test: transitionend event for pseudo elements</title>
+<meta name="assert" content="Test checks that TransitionEnd events are fired for pseudo-elements">
+<link rel="help" title="5. Transition Events" href="http://www.w3.org/TR/css3-transitions/#transition-events">
+<link rel="help" title="CSS21 - 12.1 The :before and :after pseudo-elements" href="http://www.w3.org/TR/CSS21/generate.html#before-after-content">
+<link rel="help" title="CSS3 Generated and Replaced Content Module" href="http://www.w3.org/TR/css3-content/">
+<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>
+
+<style>
+.before::before,
+.after:after {
+  content: '';
+  transition: padding-left .01s;
+  padding-left: 1px;
+}
+.before.active::before,
+.after.active:after {
+  padding-left: 10px;
+}
+</style>
+
+</head>
+<body>
+
+<div id="log"></div>
+
+<script>
+promise_test(t => {
+  const div = addDiv(t, { 'class': 'before' });
+  getComputedStyle(div).paddingLeft;
+  div.classList.add('active');
+
+  const watcher = new EventWatcher(t, div, [ 'transitionend' ]);
+  return watcher.wait_for('transitionend').then(evt => {
+    assert_end_events_equal(evt, 'padding-left', 0.01, '::before');
+  });
+}, 'transition padding-left on ::before');
+
+promise_test(t => {
+  const div = addDiv(t, { 'class': 'after' });
+  getComputedStyle(div).paddingLeft;
+  div.classList.add('active');
+
+  const watcher = new EventWatcher(t, div, [ 'transitionend' ]);
+  return watcher.wait_for('transitionend').then(evt => {
+    assert_end_events_equal(evt, 'padding-left', 0.01, '::after');
+  });
+}, 'transition padding-left on ::after');
+</script>
+</body>
+</html>