michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: const Cu = Components.utils;
michael@0: 
michael@0: function run_test() {
michael@0:   var secMan = Cc["@mozilla.org/scriptsecuritymanager;1"].getService(Ci.nsIScriptSecurityManager);
michael@0:   do_check_true(secMan.isSystemPrincipal(Cu.getObjectPrincipal({})));
michael@0:   var sb = new Cu.Sandbox('http://www.example.com');
michael@0:   Cu.evalInSandbox('var obj = { foo: 42 };', sb);
michael@0:   do_check_eq(Cu.getObjectPrincipal(sb.obj).origin, 'http://www.example.com');
michael@0: }