<!DOCTYPE html>
<html>
  <head>
    <title>The interval property must be expressed in milliseconds. It must be a constant, to simplify filtering of the data by the Web application</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"> <!-- 2013-10-14 -->
  </head>
  <body>
    <p>Move the device to run the test.</p>
    <div id="log"></div>
    <script>
      var t = async_test("The interval property must be different to zero and must be a constant");
      var inter1 = 0;
      var inter2 = 0;
      var run = false;
      window.addEventListener("devicemotion", function(e) {
        if (!run) {
          run = true;
          t.step(function() {
            if (inter1 == 0) {
              inter2 = e.interval;
            }
            inter1 = e.interval;
            assert_not_equals(inter1, 0);
            assert_not_equals(inter1, inter2);
          });
          t.done();
        }
      }, false);
  </script>
  </body>
</html>

