<head>
    <meta name="viewport" content="width=device-width, user-scalable=yes, maximum-scale=3, minimum-scale=1">
    <script>
        function test() {
            if (window.testRunner) {
                testRunner.dumpAsText();
                var viewportConfiguation = internals.configurationForViewport(1, 320, 480, 320, 352);
                if (/userScalable true/.test(viewportConfiguation))
                    alert("PASS");
                else
                    alert("FAIL: " + viewportConfiguation);
            }
        }
    </script>
</head>
<body onload="test();">