symbol-object-contains-symbol-properties-non-strict.js

Enable keyboard shortcuts

// Copyright (C) 2013 the V8 project authors. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

es6id: 19.4

description: >

    Object.preventExtensions(obj) where obj contains symbol properties.

flags: [noStrict]

features: [Symbol]

---*/

var symA = Symbol("A");

var symB = Symbol("B");

var obj = {};

obj[symA] = 1;

Object.preventExtensions(obj);

obj[symA] = 2;

obj[symB] = 1;

assert.sameValue(obj[symA], 2, "The value of `obj[symA]` is `2`");

assert.sameValue(delete obj[symA], true, "`delete obj[symA]` is `true`");

assert.sameValue(obj[symB], undefined, "The value of `obj[symB]` is `undefined`");

reportCompare(0, 0);