text: /// Copyright (c) 2012 Ecma International.  All rights reserved. 
  /**
   * @path ch15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-10.js
   * @description Array.prototype.filter return value of callbackfn is a number (value is negative number)
   */
  
  
  function testcase() {
  
          function callbackfn(val, idx, obj) {
              return -5;
          }
  
          var newArr = [11].filter(callbackfn);
          return newArr.length === 1 && newArr[0] === 11;
      }
  runTestCase(testcase);
  