JSTests/test262/test/built-ins/String/prototype/lastIndexOf/S15.5.4.8_A4_T5.js

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

/*---
info: |
    when String.prototype.lastIndexOf(searchString, position) is called first Call ToString, giving it the this value as its argument.
    Then Call ToString(searchString) and Call ToNumber(position)
es5id: 15.5.4.8_A4_T5
description: >
    Override toString and valueOf functions, first and second valueOf
    throw exception
---*/

var __obj = {toString:function(){return {};},valueOf:function(){throw "intostr";}};

var __obj2 = {valueOf:function(){throw "intointeger";}};

__FACTORY.prototype.lastIndexOf = String.prototype.lastIndexOf;

var __instance = new __FACTORY(void 0);

//////////////////////////////////////////////////////////////////////////////
//CHECK#1
try {
  var x = __instance.lastIndexOf(__obj, __obj2);
  $ERROR('#1: var x = __instance.lastIndexOf(__obj, __obj2) lead to throwing exception');
} catch (e) {
  if (e!=="intostr") {
    $ERROR('#1.1: Exception === "intostr". Actual: '+e);
  }
}
//
//////////////////////////////////////////////////////////////////////////////

function __FACTORY( value ) {
    this.value = value;
    this.toString = function() { return new Number; };
    this.valueOf=function(){return this.value+""};
}