test/built-ins/Object/defineProperties/15.2.3.7-6-a-188.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: 15.2.3.7-6-a-188
description: >
    Object.defineProperties - 'O' is an Array, 'P' is an array index
    named property, 'P' is own data property that overrides an
    inherited data property  (15.4.5.1 step 4.c)
includes: [runTestCase.js]
---*/

function testcase() {
        try {
            Object.defineProperty(Array.prototype, "0", {
                value: 11,
                configurable: true
            });

            var arr = [];
            Object.defineProperty(arr, "0", {
                value: 12,
                configurable: false
            });

            Object.defineProperties(arr, {
                "0": {
                    configurable: true
                }
            });
            return false;
        } catch (e) {
            return e instanceof TypeError && arr[0] === 12 && Array.prototype[0] === 11;
        } finally {
            delete Array.prototype[0];
        }
    }
runTestCase(testcase);