The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 const Cc = Components.classes;

 const Ci = Components.interfaces;

 // Check that the zip cache can expire entries from nested jars

 var ios = Cc["@mozilla.org/network/io-service;1"].

           getService(Ci.nsIIOService);

 function open_inner_zip(base, idx) {

     var spec = "jar:" + base + "inner" + idx + ".zip!/foo";

     var channel = ios.newChannel(spec, null, null);

     var stream = channel.open();

 }

 function run_test() {

   var file = do_get_file("data/test_bug637286.zip");

   var outerJarBase = "jar:" + ios.newFileURI(file).spec + "!/";

   for (var i = 0; i < 40; i++) {

     open_inner_zip(outerJarBase, i);

     gc();

   }

 }