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<!DOCTYPE html>
<html>
<head>
<title>Rotate the device frame around its z axis</title>
<meta name=viewport content="width=device-width, maximum-scale=1.0">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="author" title="Mosquito FP7">
<link rel="reviewer author" title="Zhiqiang Zhang" href="mailto:zhiqiang.zhang@intel.com"> <!-- 2013-10-12 -->
</head>
<body>
<p>Rotate the device frame around its z axis to run the test.</p>
<div id="log"></div>
<script>
var alpha = 0;
var run = false;
window.addEventListener("deviceorientation", function(e) {
if (!run) {
run = true;
alpha = e.alpha;
}
}, false);
test(function() {
assert_true(alpha > 0 && alpha < 360);
}, "Alpha is between 0 and 360");
test(function() {
assert_false(alpha > -2 && alpha < 2);
}, "Alpha is not around zero (between 0 and 2)");
</script>
</body>
</html>
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