michael@0: function run_test() {
michael@0:   var Cu = Components.utils;
michael@0:   sb = new Cu.Sandbox('http://www.example.com');
michael@0:   sb.do_check_eq = do_check_eq;
michael@0:   Cu.evalInSandbox('do_check_eq(typeof new Promise(function(resolve){resolve();}), "object");',
michael@0:                    sb);
michael@0:   sb = new Cu.Sandbox('http://www.example.com',
michael@0:                       { wantGlobalProperties: ["-Promise"] });
michael@0:   sb.do_check_eq = do_check_eq;
michael@0:   Cu.evalInSandbox('do_check_eq(typeof Promise, "undefined");', sb);
michael@0:   do_check_eq(typeof new Promise(function(resolve){resolve();}), "object");
michael@0: }