michael@0: function run_test() {
michael@0:   var Cu = Components.utils;
michael@0:   sb = new Cu.Sandbox('http://www.example.com',
michael@0:                       { wantGlobalProperties: ["atob", "btoa"] });
michael@0:   sb.do_check_eq = do_check_eq;
michael@0:   Cu.evalInSandbox('var dummy = "Dummy test.";' +
michael@0:                    'do_check_eq(dummy, atob(btoa(dummy)));' +
michael@0:                    'do_check_eq(btoa("budapest"), "YnVkYXBlc3Q=");',
michael@0:                    sb);
michael@0: }