test262/test/built-ins/Object/defineProperty/15.2.3.6-4-217.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// Ecma International makes this code available under the terms and conditions set
// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
// "Use Terms").   Any redistribution of this code must retain the above
// copyright and this notice and otherwise comply with the Use Terms.

/*---
es5id: 15.2.3.6-4-217
description: >
    Object.defineProperty - 'O' is an Array, 'name' is an array index
    property, both the [[Value]] field of 'desc' and the [[Value]]
    attribute value of 'name' are NaN  (15.4.5.1 step 4.c)
includes: [propertyHelper.js]
---*/

var arrObj = [];

Object.defineProperty(arrObj, "0", { value: NaN });

Object.defineProperty(arrObj, "0", { value: NaN });

assert(arrObj.hasOwnProperty("0"));
assert(arrObj[0] !== arrObj[0]);

verifyNotWritable(arrObj, "0");
verifyNotEnumerable(arrObj, "0");
verifyNotWritable(arrObj, "0");