test262/test/built-ins/Object/defineProperty/15.2.3.6-4-465.js

// 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: 15.2.3.6-4-465
description: >
    ES5 Attributes - success to update [[Configurable]] attribute of
    accessor property ([[Get]] is undefined, [[Set]] is a Function,
    [[Enumerable]] is true, [[Configurable]] is true) to different
    value
includes: [propertyHelper.js]
---*/

        var obj = {};

        var verifySetFunc = "data";
        var setFunc = function (value) {
            verifySetFunc = value;
        };

        Object.defineProperty(obj, "prop", {
            get: undefined,
            set: setFunc,
            enumerable: true,
            configurable: true
        });
        var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");

        Object.defineProperty(obj, "prop", {
            configurable: false
        });
        var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
        delete obj.prop;

        return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop");
    }