michael@0: const Ci = Components.interfaces;
michael@0: const Cc = Components.classes;
michael@0: 
michael@0: const CWD = do_get_cwd();
michael@0: function checkOS(os) {
michael@0:   const nsILocalFile_ = "nsILocalFile" + os;
michael@0:   return nsILocalFile_ in Components.interfaces &&
michael@0:          CWD instanceof Components.interfaces[nsILocalFile_];
michael@0: }
michael@0: 
michael@0: const isWin = checkOS("Win");
michael@0: 
michael@0: function run_test() {
michael@0:   var envVar = isWin ? "USERPROFILE" : "HOME";
michael@0: 
michael@0:   var dirSvc = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties);
michael@0:   var homeDir = dirSvc.get("Home", Ci.nsIFile);
michael@0: 
michael@0:   var env = Cc["@mozilla.org/process/environment;1"].getService(Ci.nsIEnvironment);
michael@0:   var expected = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile);
michael@0:   expected.initWithPath(env.get(envVar));
michael@0: 
michael@0:   do_check_eq(homeDir.path, expected.path);
michael@0: }