test/built-ins/Object/defineProperty/15.2.3.6-3-156.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: 15.2.3.6-3-156
description: >
    Object.defineProperty - 'writable' property in 'Attributes' is own
    data property that overrides an inherited data property  (8.10.5
    step 6.a)
---*/

        var obj = { };

        var proto = {
            writable: false 
        };

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

        var child = new ConstructFun();
        child.writable = true;

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

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

        obj.property = "isWritable";

        var afterWrite = (obj.property === "isWritable");

assert.sameValue(beforeWrite, true, 'beforeWrite');
assert.sameValue(afterWrite, true, 'afterWrite');