The Tor Browser / file revision

 "use strict";

 Components.utils.import("resource://gre/modules/osfile.jsm");

 Components.utils.import("resource://gre/modules/Task.jsm");

 function run_test() {

   do_test_pending();

   run_next_test();

 }

 /**

  * Test to ensure that |File.prototype.flush| is available in the async API.

  */

 add_task(function test_flush() {

   let path = OS.Path.join(OS.Constants.Path.tmpDir,

                           "test_osfile_async_flush.tmp");

   let file = yield OS.File.open(path, {trunc: true, write: true});

   try {

     try {

       yield file.flush();

     } finally {

       yield file.close();

     }

   } finally {

     yield OS.File.remove(path);

   }

 });

 add_task(do_test_finished);