JSTests/test262/test/built-ins/Object/defineProperty/15.2.3.6-4-159.js

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

/*---
es5id: 15.2.3.6-4-159
description: >
    Object.defineProperty - 'O' is an Array, 'name' is the length
    property of 'O', set the [[Value]] field of 'desc' to a value
    greater than the existing value of length (15.4.5.1 step 3.f)
---*/

var arrObj = [0, , 2];

Object.defineProperty(arrObj, "length", {
  value: 5
});

assert.sameValue(arrObj.length, 5, 'arrObj.length');
assert.sameValue(arrObj[0], 0, 'arrObj[0]');
assert.sameValue(arrObj.hasOwnProperty("1"), false, 'arrObj.hasOwnProperty("1")');
assert.sameValue(arrObj[2], 2, 'arrObj[2]');
assert.sameValue(arrObj.hasOwnProperty("4"), false, 'arrObj.hasOwnProperty("4")');