test/built-ins/Object/defineProperty/15.2.3.6-4-42.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: 15.2.3.6-4-42
description: >
    Object.defineProperty - 'O' is an Error object that uses Object's
    [[GetOwnProperty]] method to access the 'name' property (8.12.9
    step 1)
---*/

var desc = new Error();

Object.defineProperty(desc, "foo", {
  value: 12,
  configurable: false
});
assert.throws(TypeError, function() {
  Object.defineProperty(desc, "foo", {
    value: 11,
    configurable: true
  });
});
assert.sameValue(desc.foo, 12, 'desc.foo');