dom/battery/test/test_battery_discharging.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <head>
   4   <title>Test for Battery API</title>
   5   <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
   6   <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
   7 </head>
   8 <body>
   9 <p id="display"></p>
  10 <div id="content" style="display: none">
  11 </div>
  12 <pre id="test">
  13 <script type="application/javascript">
  14
  15 "use strict";
  16
  17 SimpleTest.waitForExplicitFinish();
  18
  19 /** Test for Battery API **/
  20 navigator.getBattery().then(function(battery) {
  21   ok(battery.level >= 0.0 && battery.level <= 1.0, "Battery level " + battery.level + " should be in the range [0.0, 1.0]");
  22
  23   SpecialPowers.pushPrefEnv({"set": [["dom.battery.test.discharging", true]]}, function() {
  24     is(battery.charging, false, "Battery should be discharging");
  25     is(battery.chargingTime, Infinity, "Battery chargingTime should be Infinity when discharging");
  26     ok(battery.dischargingTime > 0, "Battery dischargingTime " + battery.dischargingTime + " should be positive when discharging");
  27
  28     SimpleTest.finish();
  29   });
  30 });
  31
  32 </script>
  33 </pre>
  34 </body>
  35 </html>