test/built-ins/Array/prototype/map/15.4.4.19-8-6.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.map
es5id: 15.4.4.19-8-6
description: >
    Array.prototype.map visits deleted element in array after the call
    when same index is also present in prototype
---*/

  function callbackfn(val, idx, obj)
  {
    delete srcArr[4];
    if(val > 0)
      return 1;
    else
      return 0;

  }

  Array.prototype[4] = 5;
  var srcArr = [1,2,3,4,5];
  var resArr = srcArr.map(callbackfn);
  delete Array.prototype[4];

assert.sameValue(resArr.length, 5, 'resArr.length');
assert.sameValue(resArr[4], 1, 'resArr[4]');