test/built-ins/Object/defineProperty/15.2.3.6-4-191.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: 15.2.3.6-4-191
description: >
    Object.defineProperty - 'O' is an Array, 'name' is an array index
    named property, 'name' is an inherited data property, test that
    defining own index named property is successful (15.4.5.1 step 4.c)
---*/

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

    var arrObj = [];

    Object.defineProperty(arrObj, "0", {
        configurable: false
    });

    if (!arrObj.hasOwnProperty("0")) {
        $ERROR("Expected arrObj.hasOwnProperty('0') === true, actually " + arrObj.hasOwnProperty("0"));
    }
    if (Array.prototype[0] !== 11) {
        $ERROR("Expected Array.prototype[0] === 11), actually " + Array.prototype[0]);
    }
    if (typeof arrObj[0] !== "undefined") {
        $ERROR("Expected typeof arrObj[0] === 'undefined'), actually " + typeof arrObj[0]);
    }

} finally {
    delete Array.prototype[0];
}