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 ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-4-7.js
   * @description Array.prototype.indexOf returns -1 if 'length' is 0 ( length is object overridden with obj w/o valueOf (toString))
   */
  
  
  function testcase() {
  
    
    // objects inherit the default valueOf method of the Object object;
    // that simply returns the itself. Since the default valueOf() method
    // does not return a primitive value, ES next tries to convert the object
    // to a number by calling its toString() method and converting the
    // resulting string to a number.
   var i = Array.prototype.indexOf.call({length: { toString: function () { return '0';}}}, 1);
    
    if (i === -1) {
      return true;
    }
   }
  runTestCase(testcase);
  