JSTests/test262/test/built-ins/String/prototype/substring/S15.5.4.15_A1_T12.js

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

/*---
info: String.prototype.substring (start, end)
es5id: 15.5.4.15_A1_T12
description: >
    Arguments are objects, and instance is string.  First object have
    overrided valueOf function and toString function, that return
    exception.  Second object have overrided valueOf function, that
    return exception
---*/

var __obj = {valueOf:function(){return {};}, toString:function(){throw "instart";}};
var __obj2 = {valueOf:function(){throw "inend";}};
var __str = new String("ABB\u0041BABAB");

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