test/built-ins/Object/defineProperty/15.2.3.6-3-174-1.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.6-3-174-1
description: >
    Object.defineProperty - 'Attributes' is an Error object that uses
    Object's [[Get]] method to access the 'writable' property of
    prototype object (8.10.5 step 6.b)
includes: [runTestCase.js]
---*/

function testcase() {
        var obj = {};
        try {
            Error.prototype.writable = true;

            var errObj = new Error();

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

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

            obj.property = "isWritable";

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

            return beforeWrite === true && afterWrite === true;
        } finally {
            delete Error.prototype.writable;
        }
    }
runTestCase(testcase);