JSTests/test262/test/built-ins/Object/defineProperty/15.2.3.6-4-274.js

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

/*---
es5id: 15.2.3.6-4-274
description: >
    Object.defineProperty - 'O' is an Array, 'name' is an array index
    named property, test the length property of 'O' is not changed if
    ToUint32('name') is less than value of the length property in 'O'
    (15.4.5.1 step 4.e)
---*/

var arrObj = [];
arrObj.length = 3; // default value of length: writable: true, configurable: false, enumerable: false

Object.defineProperty(arrObj, "1", {
  value: 14
});

assert.sameValue(arrObj.length, 3, 'arrObj.length');
assert.sameValue(arrObj[1], 14, 'arrObj[1]');