text: /// Copyright (c) 2012 Ecma International.  All rights reserved. 
  /**
   * @path ch15/15.4/15.4.4/15.4.4.21/15.4.4.21-8-c-3.js
   * @description Array.prototype.reduce throws TypeError when elements assigned values are deleted and initialValue is not present
   */
  
  
  function testcase() { 
   
    function callbackfn(prevVal, curVal, idx, obj)
    {
    }
  
    var arr = [1,2,3,4,5];
    delete arr[0];
    delete arr[1];
    delete arr[2];
    delete arr[3];
    delete arr[4];
    try {
      arr.reduce(callbackfn);
    } 
    catch(e) {
      if(e instanceof TypeError)
        return true;  
    }
   }
  runTestCase(testcase);
  