test/built-ins/Object/defineProperty/15.2.3.6-4-162.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: 15.2.3.6-4-162
description: >
    Object.defineProperty - 'O' is an Array, 'name' is the length
    property of 'O', the [[Value]] field of 'desc' is greater than
    value of the length property, test TypeError is thrown when the
    length property is not writable (15.4.5.1 step 3.f.i)
---*/

        var arrObj = [];

        Object.defineProperty(arrObj, "length", {
            writable: false
        });
assert.throws(TypeError, function() {
            Object.defineProperty(arrObj, "length", {
                value: 12
            });
});