test/built-ins/Object/defineProperties/15.2.3.7-6-a-7.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: 15.2.3.7-6-a-7
description: >
    Object.defineProperties - 'P' is own accessor property that
    overrides an inherited data property (8.12.9 step 1 )
includes: [runTestCase.js]
---*/

function testcase() {
        var proto = {};
        Object.defineProperty(proto, "prop", {
            value: 11,
            configurable: true
        });
        var Con = function () { };
        Con.prototype = proto;

        var obj = new Con();
        Object.defineProperty(obj, "prop", {
            get: function () {
                return 12;
            },
            configurable: false
        });

        try {
            Object.defineProperties(obj, {
                prop: {
                    value: 13,
                    configurable: true
                }
            });
            return false;
        } catch (e) {
            return (e instanceof TypeError) && obj.prop === 12;
        }
    }
runTestCase(testcase);