test262/test/built-ins/Object/defineProperty/15.2.3.6-4-193.js

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

/*---
es5id: 15.2.3.6-4-193
description: >
    Object.defineProperty - 'O' is an Array, 'name' is an array index
    named property, 'name' is own data property that overrides an
    inherited accessor property, test TypeError is thrown when update
    the [[Configurable]] attribute to true and value of
    [[Configurable]] attribute of original is false  (15.4.5.1 step
    4.c)
---*/

var arrObj = [];

assert.throws(TypeError, function() {
  Object.defineProperty(Array.prototype, "0", {
    get: function() {
      return 11;
    },
    configurable: true
  });

  Object.defineProperty(arrObj, "0", {
    value: 12,
    configurable: false
  });

  Object.defineProperty(arrObj, "0", {
    configurable: true
  });
});
assert.sameValue(Array.prototype[0], 11, 'Array.prototype[0]');
assert.sameValue(arrObj[0], 12, 'arrObj[0]');