js/src/tests/test262/built-ins/Array/prototype/reduceRight/15.4.4.22-9-c-ii-19.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.reduceright
description: >
    Array.prototype.reduceRight - value of 'accumulator' used for
    first iteration is the value of max index property which is not
    undefined when 'initialValue' is not present on an Array
---*/

var arr = [11, 12, 13];
var testResult = false;

function callbackfn(prevVal, curVal, idx, obj) {
  if (idx === 1) {
    testResult = (prevVal === 13);
  }
  return curVal;
}
arr.reduceRight(callbackfn);

assert(testResult, 'testResult !== true');

reportCompare(0, 0);