test/built-ins/Object/defineProperty/15.2.3.6-4-354-4.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: 15.2.3.6-4-354-4
description: >
    Object.defineProperty will update [[Value]] attribute successfully
    when [[Configurable]] attribute is true and [[Writable]] attribute
    is false, 'O' is the global object (8.12.9 - step Note)
includes: [propertyHelper.js, fnGlobalObject.js]
---*/


var obj = fnGlobalObject();

try {
    Object.defineProperty(obj, "property", {
        value: 1001,
        writable: false,
        configurable: true
    });

    Object.defineProperty(obj, "property", {
        value: 1002
    });

    verifyEqualTo(obj, "property", 1002);

    verifyNotWritable(obj, "property");

    verifyNotEnumerable(obj, "property");

    verifyConfigurable(obj, "property");
} finally {
    delete obj.property;
}