// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/**
 * when String.prototype.concat([,[...]]) is called first Call ToString, giving it the this value as its argument
 *
 * @path ch15/15.5/15.5.4/15.5.4.6/S15.5.4.6_A4_T2.js
 * @description Override toString function onto function, that throw exception
 */

var __instance = {toString:function(){throw "intostring";}};
var __obj = {toString:function(){throw "infirstarg";}};

__instance.concat = String.prototype.concat;

//////////////////////////////////////////////////////////////////////////////
//CHECK#1
try {
  String.prototype.concat.call(__instance,__obj, notexist);
  $FAIL('#1: "String.prototype.concat.call(__instance,__obj, notexist)" lead to throwing exception');
} catch (e) {
  if (e !== "intostring") {
    $ERROR('#1: e === "intostring". Actual: '+e ); 
  }
} 
//
//////////////////////////////////////////////////////////////////////////////

var notexist;