test/built-ins/Object/defineProperty/15.2.3.6-4-164.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: 15.2.3.6-4-164
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 TypeError is thrown when the
    [[Writable]] attribute of the length property is false (15.4.5.1
    step 3.g)
includes: [runTestCase.js]
---*/

function testcase() {

        var arrObj = [0, 1];

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

        try {
            Object.defineProperty(arrObj, "length", {
                value: 0
            });
            return false;
        } catch (e) {
            return e instanceof TypeError;
        }
    }
runTestCase(testcase);