JSTests/test262/test/built-ins/Object/defineProperties/15.2.3.7-6-a-314.js

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

/*---
es5id: 15.2.3.7-6-a-314
description: >
    Object.defineProperties - '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 arg = (function() {
  return arguments;
}(1, 2, 3));
var accessed = false;

Object.defineProperties(arg, {
  "0": {
    get: function() {
      accessed = true;
      return 12;
    }
  }
});

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