js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-2-3.js


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// 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.reduce
description: >
    Array.prototype.reduce - 'length' is an own data property that
    overrides an inherited data property on an Array-like object
---*/

function callbackfn(prevVal, curVal, idx, obj) {
  return (obj.length === 2);
}

var proto = {
  length: 3
};

var Con = function() {};
Con.prototype = proto;

var child = new Con();
child.length = 2;
child[0] = 12;
child[1] = 11;
child[2] = 9;

assert.sameValue(Array.prototype.reduce.call(child, callbackfn, 1), true, 'Array.prototype.reduce.call(child, callbackfn, 1)');

reportCompare(0, 0);