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<head>
<script src="../../../resources/js-test-pre.js"></script>
</head>
<body>
<script>
description('Tests the optional properties of DeviceOrientationEvent. Each property should be null if not set, or set to null or undefined.');

var event;

evalAndLog("event = document.createEvent('DeviceOrientationEvent')");
shouldBeTrue("event.alpha == null");
shouldBeTrue("event.beta == null");
shouldBeTrue("event.gamma == null");

evalAndLog("event.initDeviceOrientationEvent('', false, false, 0, 1, 2)");
shouldBeTrue("event.alpha == 0");
shouldBeTrue("event.beta == 1");
shouldBeTrue("event.gamma == 2");

evalAndLog("event.initDeviceOrientationEvent()");
shouldBeTrue("event.alpha == null");
shouldBeTrue("event.beta == null");
shouldBeTrue("event.gamma == null");

evalAndLog("event.initDeviceOrientationEvent('', false, false, [], [], [])");
shouldBeTrue("event.alpha == 0");
shouldBeTrue("event.beta == 0");
shouldBeTrue("event.gamma == 0");

evalAndLog("event.initDeviceOrientationEvent('', false, false, undefined, undefined, undefined)");
shouldBeTrue("event.alpha == null");
shouldBeTrue("event.beta == null");
shouldBeTrue("event.gamma == null");

evalAndLog("event.initDeviceOrientationEvent('', false, false, '', '', '')");
shouldBeTrue("event.alpha == 0");
shouldBeTrue("event.beta == 0");
shouldBeTrue("event.gamma == 0");

evalAndLog("event.initDeviceOrientationEvent('', false, false, null, null, null)");
shouldBeTrue("event.alpha == null");
shouldBeTrue("event.beta == null");
shouldBeTrue("event.gamma == null");
</script>
<script src="../../../resources/js-test-post.js"></script>
</body>
</html>