test/built-ins/Object/defineProperties/15.2.3.7-6-a-85.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-85
description: >
    Object.defineProperties throws TypeError when P.configurable is
    false, P.writalbe is false, properties.value and P.value are two
    objects with different values (8.12.9 step 10.a.ii.1)
includes: [propertyHelper.js]
---*/


var obj = {};

var obj1 = { length: 10 };

Object.defineProperty(obj, "foo", { 
    value: obj1, 
    writable: false, 
    configurable: false 
});

var obj2 = { length: 20 };

try {
    Object.defineProperties(obj, {
        foo: {
            value: obj2
        }
    });
    $ERROR("Expected an exception.");
} catch (e) {
    verifyEqualTo(obj, "foo", obj1);

    verifyNotWritable(obj, "foo");

    verifyNotEnumerable(obj, "foo");

    verifyNotConfigurable(obj, "foo");

    if (!(e instanceof TypeError)) {
        $ERROR("Expected TypeError, got " + e);
    }

}