JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-1-10.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: 15.4.4.20-1-10
description: Array.prototype.filter applied to the Math object
---*/

        function callbackfn(val, idx, obj) {
            return '[object Math]' === Object.prototype.toString.call(obj);
        }

            Math.length = 1;
            Math[0] = 1;
            var newArr = Array.prototype.filter.call(Math, callbackfn);

assert.sameValue(newArr[0], 1, 'newArr[0]');