JSTests/test262/test/built-ins/Object/defineProperty/15.2.3.6-4-325.js

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

/*---
es5id: 15.2.3.6-4-325
description: >
    Object.defineProperty - 'O' is an Arguments object, 'name' is own
    property of [[ParameterMap]] of 'O', test 'name' is deleted if
    'name' is configurable and 'desc' is accessor descriptor (10.6
    [[DefineOwnProperty]] step 5.a.i)
---*/

var argObj = (function() {
  return arguments;
})(1, 2, 3);
var accessed = false;

Object.defineProperty(argObj, 0, {
  get: function() {
    accessed = true;
    return 12;
  }
});

assert.sameValue(argObj[0], 12, 'argObj[0]');
assert(accessed, 'accessed !== true');