michael@0: const Cu = Components.utils;
michael@0: function run_test() {
michael@0:   var sb = Cu.Sandbox('http://www.example.com');
michael@0:   var o = new sb.Object();
michael@0:   o.__proto__ = null;
michael@0:   do_check_eq(Object.getPrototypeOf(o), null);
michael@0: }