JSTests/test262/test/built-ins/Array/prototype/map/15.4.4.19-9-4.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: 15.4.4.19-9-4
description: Array.prototype.map doesn't visit expandos
---*/

  var callCnt = 0;
  function callbackfn(val, idx, obj)
  {
    callCnt++;
  }
  var srcArr = [1,2,3,4,5];
  srcArr["i"] = 10;
  srcArr[true] = 11;

  var resArr = srcArr.map(callbackfn);

assert.sameValue(callCnt, 5, 'callCnt');