// Copyright 2015 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. (function testSeal() { var sloppy = arguments; var sym = Symbol(); sloppy[sym] = 123; Object.seal(sloppy); assertTrue(Object.isSealed(sloppy)); var desc = Object.getOwnPropertyDescriptor(sloppy, sym); assertEquals(123, desc.value); assertFalse(desc.configurable); assertTrue(desc.writable); })(); (function testFreeze() { var sloppy = arguments; var sym = Symbol(); sloppy[sym] = 123; Object.freeze(sloppy); assertTrue(Object.isFrozen(sloppy)); var desc = Object.getOwnPropertyDescriptor(sloppy, sym); assertEquals(123, desc.value); assertFalse(desc.configurable); assertFalse(desc.writable); })(); (function testIsFrozenAndIsSealed() { var sym = Symbol(); var obj = { [sym]: 123 }; Object.preventExtensions(obj); assertFalse(Object.isFrozen(obj)); assertFalse(Object.isSealed(obj)); })();