test/built-ins/Object/defineProperty/15.2.3.6-3-90-1.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: 15.2.3.6-3-90-1
description: >
    Object.defineProperty - 'Attributes' is a Number object that uses
    Object's [[Get]] method to access the 'configurable' property
    (8.10.5 step 4.a)
---*/

        var obj = {};

            Number.prototype.configurable = true;
            var numObj = new Number(-2);

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

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

            delete obj.property;

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

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