The Tor Browser / file revision

 const Cc = Components.classes;

 const Ci = Components.interfaces;

 function run_test() {

   var dirService = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties); 

   var tmpDir = dirService.get("TmpD", Ci.nsIFile); 

   var zipfile = do_get_file("data/test_umlaute.zip");

   var testFile = tmpDir.clone();

   testFile.append("test_\u00FC.txt");

   if (testFile.exists()) {

     testFile.remove(false);

   }

   var zipreader = Cc["@mozilla.org/libjar/zip-reader;1"].createInstance(Ci.nsIZipReader);

   zipreader.open(zipfile);

   var entries = zipreader.findEntries(null);

   do_check_true(entries.hasMore()); 

   var entryName = entries.getNext();

   do_check_eq(entryName, "test_\u00FC.txt");

   do_check_true(zipreader.hasEntry(entryName));

   var target = tmpDir.clone();

   target.append(entryName);

   target.create(Ci.nsILocalFile.NORMAL_FILE_TYPE, 6 * 64 + 4 * 8 + 0); // 0640

   zipreader.extract(entryName, target);

   var entry = zipreader.getEntry(entryName);

   do_check_true(entry != null);

   zipreader.test(entryName);

   zipreader.close();

 }