1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
6 function checkCtor(global, name, description) {
7 ok(Object.isFrozen(global[name]), `${description} ${name} is frozen`);
9 Object.isSealed(global[name].prototype),
10 `${description} ${name}.prototype is sealed`
13 let descr = Object.getOwnPropertyDescriptor(global, name);
14 ok(!descr.configurable, `${description} ${name} should be non-configurable`);
15 ok(!descr.writable, `${description} ${name} should not be writable`);
18 function checkGlobal(global, description) {
19 checkCtor(global, "Object", description);
20 checkCtor(global, "Array", description);
21 checkCtor(global, "Function", description);
24 add_task(async function () {
25 let systemGlobal = Cu.getGlobalForObject(Services);
26 checkGlobal(systemGlobal, "system global");