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<!DOCTYPE html>
<html>
<head>
<title>Implementations that are unable to provide all three angles must set the values of the unknown angles to null</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>Precondition: implementation is unable to provide all three angles</p>
<p>Rotate the device to run the test.</p>
<div id="log"></div>
<script>
var gamma, beta, alpha;
var run = false;
window.addEventListener("deviceorientation", function(e) {
if (!run) {
run = true;
gamma = e.gamma; // Gamma : angle par rapport a x
beta = e.beta; // Beta : angle par rapport a y
alpha = e.alpha; // Alpha : orientation (N-S-E-O)
}
}, false);
test(function() {
assert_equals(gamma, null);
}, "Check if gamma is set to null");
test(function() {
assert_equals(beta, null);
}, "Check if beta is set to null");
test(function() {
assert_equals(alpha, null);
}, "Check if alpha is set to null");
</script>
</body>
</html>
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