test_timingservice.js

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function newAppRelativeFile( path ) {

  var file = Cc["@mozilla.org/file/directory_service;1"]
               .getService(Ci.nsIProperties)
               .get("resource:app", Ci.nsIFile);
  file = file.clone();

  var nodes = path.split("/");
  for ( var i = 0, end = nodes.length; i < end; i++ )
  {
    file.append( nodes[ i ] );
  }

  return file;
}

function runTest () {
  var timingService = Cc["@songbirdnest.com/Songbird/TimingService;1"]
                        .getService(Ci.sbITimingService);
                        
  var logFile = newAppRelativeFile("timingServiceLog.txt");
  timingService.logFile = logFile;
  
  timingService.startPerfTimer("testTimer");
  timingService.startPerfTimer("anotherTimer");
  
  sleep(1000);
  
  var actualTotalTime = timingService.stopPerfTimer("testTimer");
  var anotherTotalTime = timingService.stopPerfTimer("anotherTimer");
  
  log("Actual total time of performance timer is: " + actualTotalTime + "us");
  
  assertTrue(actualTotalTime >= 1000, 
             "welcome to the impossible! time travel!");

  return Components.results.NS_OK;
}