test/built-ins/Object/defineProperties/15.2.3.7-6-a-264.js


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// Copyright (c) 2012 Ecma International.  All rights reserved.
// Ecma International makes this code available under the terms and conditions set
// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
// "Use Terms").   Any redistribution of this code must retain the above
// copyright and this notice and otherwise comply with the Use Terms.

/*---
es5id: 15.2.3.7-6-a-264
description: >
    Object.defineProperties - 'O' is an Array, 'P' is an array index
    named property, test the length property of 'O' is set as
    ToUint32('P') + 1 if ToUint32('P') equals to value of the length
    property in 'O' (15.4.5.1 step 4.e.ii)
includes: [runTestCase.js]
---*/

function testcase() {

        var arr = [];

        arr.length = 3; // default value of length: writable: true, configurable: false, enumerable: false

        Object.defineProperties(arr, {
            "3": {
                value: 26
            }
        });
        return arr.length === 4 && arr[3] === 26;
    }
runTestCase(testcase);