test262/test/built-ins/Object/defineProperty/15.2.3.6-3-156.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: 15.2.3.6-3-156
description: >
    Object.defineProperty - 'writable' property in 'Attributes' is own
    data property that overrides an inherited data property  (8.10.5
    step 6.a)
includes: [runTestCase.js]
---*/

function testcase() {
        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");

        return beforeWrite === true && afterWrite === true;
    }
runTestCase(testcase);