LayoutTests/ietestcenter/Javascript/TestCases/15.4.4.19-8-4.js

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ES5Harness.registerTest( {
id: "15.4.4.19-8-4",

path: "TestCases/chapter15/15.4/15.4.4/15.4.4.19/15.4.4.19-8-4.js",

description: "Array.prototype.map doesn't visit deleted elements when Array.length is decreased",

test: 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;  
  
 },

precondition: function prereq() {
  return fnExists(Array.prototype.map);
 }
});