test262/test/built-ins/Object/defineProperty/15.2.3.6-2-48.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: 15.2.3.6-2-48
description: >
    Object.defineProperty - an inherited toString method  is invoked
    when 'P' is an object with an own valueOf and an inherited
    toString methods
includes: [runTestCase.js]
---*/

function testcase() {
        var obj = {};
        var toStringAccessed = false;
        var valueOfAccessed = false;

        var proto = {
            toString: function () {
                toStringAccessed = true;
                return "test";
            }
        };

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

        var child = new ConstructFun();
        child.valueOf = function () {
            valueOfAccessed = true;
            return "10";
        };

        Object.defineProperty(obj, child, {});

        return obj.hasOwnProperty("test") && !valueOfAccessed && toStringAccessed;
    }
runTestCase(testcase);