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https://github.com/web-platform-tests/wpt
26 December 2018, 22:31:15 UTC
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Tip revision: 835d19abcdd0a83d704629d7ee3936063fe51924 authored by Ms2ger on 06 October 2016, 12:20:21 UTC
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Tip revision: 835d19a
t012-manual.html 
<!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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