dom/performance/tests/test_worker_performance_entries.html

   1 <!-- Any copyright is dedicated to the Public Domain.
   2    - http://creativecommons.org/publicdomain/zero/1.0/ -->
   3 <!DOCTYPE HTML>
   4 <html>
   5 <head>
   6   <title>PerformanceResouceTiming in workers</title>
   7   <script src="/tests/SimpleTest/SimpleTest.js"></script>
   8   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
   9 </head>
  10 <body>
  11 <script class="testbody" type="text/javascript">
  12
  13 SimpleTest.waitForExplicitFinish();
  14
  15 // The worker assumes it will take some amount of time to load a resource.
  16 // With a low enough precision, the duration to load a resource may clamp
  17 // down to zero.
  18 var reduceTimePrecisionPrevPrefValue = SpecialPowers.getBoolPref("privacy.reduceTimerPrecision");
  19 SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", false);
  20
  21 var worker = new Worker('test_worker_performance_entries.js');
  22 worker.onmessage = function(event) {
  23   if (event.data.type == "check") {
  24     ok(event.data.status, event.data.msg);
  25     return;
  26   }
  27
  28   if (event.data.type == "finish") {
  29     SpecialPowers.setBoolPref("privacy.reduceTimerPrecision", reduceTimePrecisionPrevPrefValue);
  30     SimpleTest.finish();
  31     return;
  32   }
  33
  34   ok(false, "?!?");
  35 }
  36
  37 </script>
  38 </body>
  39 </html>