JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-2-12.js

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

/*---
esid: sec-array.prototype.filter
es5id: 15.4.4.20-2-12
description: >
    Array.prototype.filter - 'length' is own accessor property without
    a get function that overrides an inherited accessor property
---*/

        var accessed = false;
        function callbackfn(val, idx, obj) {
            accessed = true;
            return true;
        }

            Object.defineProperty(Object.prototype, "length", {
                get: function () {
                    return 2;
                },
                configurable: true
            });

            var obj = { 0: 12, 1: 11 };
            Object.defineProperty(obj, "length", {
                set: function () { },
                configurable: true
            });

            var newArr = Array.prototype.filter.call(obj, callbackfn);

assert.sameValue(newArr.length, 0, 'newArr.length');
assert.sameValue(accessed, false, 'accessed');