test/built-ins/Object/defineProperty/15.2.3.6-2-47.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: 15.2.3.6-2-47
description: >
    Object.defineProperty - TypeError exception is thrown  when 'P' is
    an object that neither toString nor valueOf returns a primitive
    value
---*/

        var obj = {};
        var toStringAccessed = false;
        var valueOfAccessed = false;

        var ownProp = {
            toString: function () {
                toStringAccessed = true;
                return {};
            },
            valueOf: function () {
                valueOfAccessed = true;
                return {};
            }
        };
assert.throws(TypeError, function() {
            Object.defineProperty(obj, ownProp, {});
});
assert(valueOfAccessed, 'valueOfAccessed !== true');
assert(toStringAccessed, 'toStringAccessed !== true');