JSTests/test262/test/built-ins/Object/defineProperty/15.2.3.6-3-42-1.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.6-3-42-1
description: >
    Object.defineProperty - 'Attributes' is an Error object that uses
    Object's [[Get]] method to access the 'enumerable' property of
    prototype object (8.10.5 step 3.a)
---*/

var obj = {};
var accessed = false;

Error.prototype.enumerable = true;
var errObj = new Error();

Object.defineProperty(obj, "property", errObj);

for (var prop in obj) {
  if (prop === "property") {
    accessed = true;
  }
}

assert(accessed, 'accessed !== true');