michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/  */
michael@0: 
michael@0: function run_test() {
michael@0:   const Cc = Components.classes;
michael@0:   const Ci = Components.interfaces;
michael@0:   const PREF_NAME = "testPref";
michael@0: 
michael@0:   var ps = Cc["@mozilla.org/preferences-service;1"]
michael@0:            .getService(Ci.nsIPrefService);
michael@0:   var prefs = ps.getDefaultBranch(null);
michael@0:   var userprefs = ps.getBranch(null);
michael@0: 
michael@0:   prefs.setCharPref(PREF_NAME, "test0");
michael@0:   prefs.lockPref(PREF_NAME);
michael@0:   do_check_eq("test0", userprefs.getCharPref(PREF_NAME));
michael@0:   do_check_eq(false, userprefs.prefHasUserValue(PREF_NAME));
michael@0: 
michael@0:   var file = do_get_profile();
michael@0:   file.append("prefs.js");
michael@0:   ps.savePrefFile(file);
michael@0: 
michael@0:   prefs.unlockPref(PREF_NAME);
michael@0:   prefs.setCharPref(PREF_NAME, "test1");
michael@0:   ps.readUserPrefs(file);
michael@0: 
michael@0:   do_check_eq("test1", userprefs.getCharPref(PREF_NAME));
michael@0:   do_check_eq(false, userprefs.prefHasUserValue(PREF_NAME));
michael@0: }