test/built-ins/Object/defineProperty/15.2.3.6-4-181.js


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

/*---
es5id: 15.2.3.6-4-181
description: >
    Object.defineProperty - 'O' is an Array, 'name' is the length
    property of 'O', the [[Value]] field of 'desc' is less than value
    of  the length property, test the [[Writable]] attribute of the
    length property is set to false at last when the [[Writable]]
    field of 'desc' is false and 'O' doesn't contain non-configurable
    large index named property (15.4.5.1 step 3.m)
includes: [propertyHelper.js]
---*/


var arrObj = [0, 1];

Object.defineProperty(arrObj, "length", {
    value: 0,
    writable: false
});

verifyNotWritable(arrObj, "length");

assert(!arrObj.hasOwnProperty("1"));
assert.sameValue(arrObj.length, 0);