JSTests/test262/test/built-ins/String/prototype/indexOf/S15.5.4.7_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.indexOf(searchString, position) is called first Call ToString, giving it the this value as its argument.
    Then Call ToString(searchString) and Call ToNumber(position)
es5id: 15.5.4.7_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.indexOf = String.prototype.indexOf;

var __instance = new __FACTORY(void 0);

//////////////////////////////////////////////////////////////////////////////
//CHECK#1
try {
  var x = __instance.indexOf(__obj, __obj2);
  $ERROR('#1: "var x = __instance.indexOf(__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 + ""
  };
}