/// 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 ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-9-6.js
 * @description Array.prototype.indexOf must return correct index(null)
 */


function testcase() {
  var obj = {toString:function (){return null}};
  var _null = null;
  var a = new Array(true,undefined,0,false,_null,1,"str",0,1,obj,true,false,null);
  if (a.indexOf(null) === 4 )  //a[4]=_null
  {
    return true;
  }
 }
runTestCase(testcase);