js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-10-6.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 - subclassed array when initialvalue
    provided
---*/

foo.prototype = [1, 2, 3, 4];

function foo() {}
var f = new foo();

function cb(prevVal, curVal, idx, obj) {
  return prevVal + curVal;
}

assert.sameValue(f.reduce(cb, -1), 9, 'f.reduce(cb,-1)');

reportCompare(0, 0);