JSTests/test262/test/built-ins/Array/prototype/map/15.4.4.19-8-8.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.map
es5id: 15.4.4.19-8-8
description: >
    Array.prototype.map - no observable effects occur if length is 0
    on an Array-like object
---*/

        var accessed = false;
        function callbackfn(val, idx, obj) {
            accessed = true;
            return val > 10;
        }

        var obj = { 0: 11, 1: 12, length: 0 };

        var testResult = Array.prototype.map.call(obj, callbackfn);

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