test/built-ins/Object/defineProperty/15.2.3.6-3-81.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: 15.2.3.6-3-81
description: >
    Object.defineProperty - 'configurable' property in 'Attributes' is
    own accessor property that overrides an inherited data property
    (8.10.5 step 4.a)
---*/

        var obj = {};

        var proto = {
            configurable: false
        };

        var ConstructFun = function () { };
        ConstructFun.prototype = proto;

        var child = new ConstructFun();
        Object.defineProperty(child, "configurable", {
            get: function () {
                return true;
            }
        });

        Object.defineProperty(obj, "property", child);

        var beforeDeleted = obj.hasOwnProperty("property");

        delete obj.property;

        var afterDeleted = obj.hasOwnProperty("property");

assert.sameValue(beforeDeleted, true, 'beforeDeleted');
assert.sameValue(afterDeleted, false, 'afterDeleted');