tor-browser

The Tor Browser
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object-seal-p-is-own-accessor-property-that-overrides-an-inherited-data-property.js (771B)

      1 // Copyright (c) 2012 Ecma International.  All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-setintegritylevel
      6 description: >
      7    Object.seal - 'P' is own accessor property that overrides an
      8    inherited data property
      9 includes: [propertyHelper.js]
     10 ---*/
     11 
     12 var proto = {};
     13 
     14 Object.defineProperty(proto, "foo", {
     15  value: 0,
     16  configurable: true
     17 });
     18 
     19 var ConstructFun = function() {};
     20 ConstructFun.prototype = proto;
     21 
     22 var obj = new ConstructFun();
     23 
     24 Object.defineProperty(obj, "foo", {
     25  get: function() {
     26    return 10;
     27  },
     28  configurable: true
     29 });
     30 
     31 assert(Object.isExtensible(obj));
     32 Object.seal(obj);
     33 
     34 verifyProperty(obj, "foo", {
     35  configurable: false,
     36 });
     37 
     38 assert.sameValue(obj.foo, 10);
     39 
     40 reportCompare(0, 0);