text: /// 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 ch15/15.5/15.5.4/15.5.4.20/15.5.4.20-2-39.js
   * @description String.prototype.trim - 'this' is an object which has an own valueOf method
   */
  
  
  function testcase() {
          var obj = {
              valueOf: function () {
                  return "abc";
              }
          };
  
          return (String.prototype.trim.call(obj) === "[object Object]");
      }
  runTestCase(testcase);
  