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https://github.com/web-platform-tests/wpt
26 December 2018, 22:31:15 UTC
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Tip revision: 5305d2c694c54ec39d590a557184b9c3b89e1699 authored by Aryeh Gregor on 23 April 2014, 13:43:55 UTC
Add NodeIterator tests
Tip revision: 5305d2c
battery-discharging-manual.html 
<!DOCTYPE html>
<html>
  <head>
    <title>Battery Status API Test Suite</title>
    <script src="/resources/testharness.js"></script>
    <script src="countdown.js"></script>
    <link rel="stylesheet" href="/resources/testharness.css" media="all"/>
    <meta name="flags" content="interact">
  </head>
  <body>
    <h1>Description</h1>
    <p>
      This test validates that all of the navigator.battery attributes exist and are set to correct values, when the battery is discharging.
    </p>
    <h2>Preconditions</h2>
    <ol>
      <li>
        The device is unplugged from the charger before this test is run.
      </li>
      <li>
        The battery must neither be empty or full, nor reach empty or full capacity during the test.
      </li>
    </ol>
    <p>
      The highest prime number discovered so far is:  <output id="prime"></output>
    </p>
    <div id="log"></div>
    <script>
    (function() {

      setup({ explicit_timeout: true });
      
      test(function() {
        assert_false(navigator.battery.charging);
      }, 'The charging attribute must be set to false.');
      
      test(function() {
        assert_true(navigator.battery.chargingTime === Infinity);
      }, 'The chargingTime attribute must be set to the value positive Infinity.');
      
      test(function() {
        assert_true(navigator.battery.dischargingTime < Infinity);
      }, 'The dischargingTime attribute must be set to the time remaining in seconds until the system\'s battery is completely discharged. If the reported discharging time ' + navigator.battery.dischargingTime + ' seconds or ' + Math.round(navigator.battery.dischargingTime/60) + ' minutes is not correct, please indicate that the test has failed.');
      
      test(function() {
        assert_true(0 <= navigator.battery.level && navigator.battery.level <= 1.0);
      }, 'The level attribute must be set to the current battery level scaled from 0 to 1.0');
      
      var onlevelchange_test = async_test('When the battery level is updated, must decrease the level attribute\'s value and fire a levelchange event. If the reported battery level ' + navigator.battery.level + ' is not correct, please indicate that the test has failed.');
      var battery_level = navigator.battery.level;
      
      // compute primes to deplete the battery faster
      var w = new Worker('prime.js');
      w.postMessage('compute');
      w.onmessage = function (e) {
        document.querySelector('#prime').textContent = e.data;
      };
      
      navigator.battery.onlevelchange = onlevelchange_test.step_func(function (e) {
        assert_true(navigator.battery.level < battery_level, 'The value of the level attribute must decrease.');
        onlevelchange_test.done();
        w.terminate();
      });
      
      add_completion_callback(function () {
        w.terminate();
      });
      
    })();
    </script>
  </body>
</html>
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