tor-browser

The Tor Browser
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object-seal-p-is-own-accessor-property-that-overrides-an-inherited-accessor-property.js (802B)

      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 accessor property
      9 includes: [propertyHelper.js]
     10 ---*/
     11 
     12 var proto = {};
     13 
     14 Object.defineProperty(proto, "foo", {
     15  get: function() {
     16    return 0;
     17  },
     18  configurable: true
     19 });
     20 
     21 var ConstructFun = function() {};
     22 ConstructFun.prototype = proto;
     23 
     24 var obj = new ConstructFun();
     25 
     26 Object.defineProperty(obj, "foo", {
     27  get: function() {
     28    return 10;
     29  },
     30  configurable: true
     31 });
     32 
     33 assert(Object.isExtensible(obj));
     34 Object.seal(obj);
     35 
     36 verifyProperty(obj, "foo", {
     37  configurable: false,
     38 });
     39 
     40 assert.sameValue(obj.foo, 10);
     41 
     42 reportCompare(0, 0);