test/suite/ch15/15.4/15.4.4/15.4.4.19/15.4.4.19-8-4.js


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/// Copyright (c) 2012 Ecma International.  All rights reserved. 
/// Ecma International makes this code available under the terms and conditions set
/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
/// "Use Terms").   Any redistribution of this code must retain the above 
/// copyright and this notice and otherwise comply with the Use Terms.
/**
 * @path ch15/15.4/15.4.4/15.4.4.19/15.4.4.19-8-4.js
 * @description Array.prototype.map doesn't visit deleted elements when Array.length is decreased
 */


function testcase() { 
 
  var callCnt = 0;
  function callbackfn(val, idx, obj)
  {
    srcArr.length = 2;
    callCnt++;
    return 1;
  }

  var srcArr = [1,2,3,4,5];
  var resArr = srcArr.map(callbackfn);
  if(resArr.length === 5  && callCnt === 2 && resArr[2] === undefined)
    return true;  
  
 }
runTestCase(testcase);