michael@0: function sbTest() {
michael@0:   var threw = false;
michael@0:   try {
michael@0:     for (var x in Components) { }
michael@0:     do_check_true(false, "Shouldn't be able to enumerate Components");
michael@0:   } catch(e) {
michael@0:     do_check_true(true, "Threw appropriately");
michael@0:     threw = true;
michael@0:   }
michael@0:   do_check_true(threw, "Shouldn't have thrown uncatchable exception");
michael@0: }
michael@0: 
michael@0: function run_test() {
michael@0:   var sb = Components.utils.Sandbox('http://www.example.com', { wantComponents: true });
michael@0:   sb.do_check_true = do_check_true;
michael@0:   Components.utils.evalInSandbox(sbTest.toSource(), sb);
michael@0:   Components.utils.evalInSandbox('sbTest();', sb);
michael@0: }