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-rw-r--r--layout/style/test/test_transitions_bug537151.html51
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diff --git a/layout/style/test/test_transitions_bug537151.html b/layout/style/test/test_transitions_bug537151.html
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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=537151
+-->
+<head>
+ <title>Test for Bug 537151</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+ <style type="text/css">
+
+ #display {
+ transition: margin-left 200ms;
+ }
+
+ </style>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=537151">Mozilla Bug 537151</a>
+<p id="display">Paragraph</p>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 537151 **/
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+
+var p = document.getElementById("display");
+p.addEventListener("transitionend", listener);
+var ignored = getComputedStyle(p, "").marginLeft;
+p.style.marginLeft = "150px";
+
+var event_count = 0;
+function listener(event)
+{
+ ++event_count;
+ setTimeout(finish, 400);
+ p.style.color = "blue";
+}
+
+function finish()
+{
+ is(event_count, 1, "should have gotten only 1 transitionend event");
+ SimpleTest.finish();
+}
+
+</script>
+</pre>
+</body>
+</html>