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diff --git a/layout/style/test/test_transitions_and_zoom.html b/layout/style/test/test_transitions_and_zoom.html
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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=583219
+-->
+<head>
+ <title>Test for Bug 583219</title>
+ <script type="application/javascript" 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 1s linear;
+ }
+
+ </style>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=583219">Mozilla Bug 583219</a>
+<p id="display"></p>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 583219 **/
+
+var p = document.getElementById("display");
+var cs = getComputedStyle(p, "");
+cs.marginLeft;
+
+p.addEventListener("transitionend", TransitionEndHandler, false);
+p.style.marginLeft = "100px";
+cs.marginLeft;
+
+SpecialPowers.setFullZoom(window, 2.0)
+
+SimpleTest.waitForExplicitFinish();
+
+function TransitionEndHandler(event) {
+ ok(true, "transition has completed");
+ is(event.propertyName, "margin-left", "event.propertyName");
+ is(cs.marginLeft, "100px", "value of margin-left");
+ SpecialPowers.setFullZoom(window, 1.0)
+ SimpleTest.finish();
+}
+
+</script>
+</pre>
+</body>
+</html>