JSTests/test262/test/built-ins/Array/prototype/indexOf/15.4.4.14-9-4.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-array.prototype.indexof
es5id: 15.4.4.14-9-4
description: Array.prototype.indexOf must return correct index(undefined)
---*/

  var obj = {toString:function (){return undefined;}};
  var _undefined1 = undefined;
  var _undefined2;
  var a = new Array(true,0,false,null,1,"undefined",obj,1,_undefined2,_undefined1,undefined);

assert.sameValue(a.indexOf(undefined), 8, 'a[8]=_undefined2');