JSTests/mozilla/ecma_3/Exceptions/15.11.4.4-1.js

/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
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*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is JavaScript Engine testing utilities.
*
* The Initial Developer of the Original Code is Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributors: d-russo@ti.com, pschwartau@netscape.com, joerg.schaible@gmx.de
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
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*
*
* Date:    22 Jan 2002
* SUMMARY: Testing Error.prototype.toString()
*
* Revised: 25 Nov 2002
* See http://bugzilla.mozilla.org/show_bug.cgi?id=181909
*
* Note that ECMA-262 3rd Edition Final, Section 15.11.4.4 states that
* Error.prototype.toString() returns an implementation-dependent string.
* Therefore any testcase on this property is somewhat arbitrary.
*
* However, d-russo@ti.com pointed out that Rhino was returning this:
*
*               js> err = new Error()
*               undefined: undefined
*
*               js> err = new Error("msg")
*               undefined: msg
*
*
* We expect Rhino to return what SpiderMonkey currently does:
*
*               js> err = new Error()
*               Error
*
*               js> err = new Error("msg")
*               Error: msg
*
*
* i.e. we expect err.toString() === err.name if err.message is not defined;
* otherwise, we expect err.toString() === err.name + ': ' + err.message.
*
* See also ECMA 15.11.4.2, 15.11.4.3
*/
//-----------------------------------------------------------------------------
var UBound = 0;
var bug = '(none)';
var summary = 'Testing Error.prototype.toString()';
var status = '';
var statusitems = [];
var actual = '';
var actualvalues = [];
var expect= '';
var expectedvalues = [];
var EMPTY_STRING = '';
var EXPECTED_FORMAT = 0;


status = inSection(1);
var err1 = new Error('msg1');
actual = examineThis(err1, 'msg1');
expect = EXPECTED_FORMAT;
addThis();

status = inSection(2);
var err2 = new Error(err1);
actual = examineThis(err2, err1);
expect = EXPECTED_FORMAT;
addThis();

status = inSection(3);
var err3 = new Error();
actual = examineThis(err3, EMPTY_STRING);
expect = EXPECTED_FORMAT;
addThis();

status = inSection(4);
var err4 = new Error(EMPTY_STRING);
actual = examineThis(err4, EMPTY_STRING);
expect = EXPECTED_FORMAT;
addThis();

// now generate a run-time error -
status = inSection(5);
try
{
  eval('1=2');
}
catch(err5)
{
 actual = examineThis(err5, '.*');
}
expect = EXPECTED_FORMAT;
addThis();



//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------



/*
 * Searches err.toString() for err.name + ':' + err.message,
 * with possible whitespace on each side of the colon sign.
 *
 * We allow for no colon in case err.message was not provided by the user.
 * In such a case, SpiderMonkey and Rhino currently set err.message = '',
 * as allowed for by ECMA 15.11.4.3. This makes |pattern| work in this case.
 *
 * If this is ever changed to a non-empty string, e.g. 'undefined',
 * you may have to modify |pattern| to take that into account -
 *
 */
function examineThis(err, msg)
{
  var pattern = err.name + '\\s*:?\\s*' + msg;
  return err.toString().search(RegExp(pattern));
}


function addThis()
{
  statusitems[UBound] = status;
  actualvalues[UBound] = actual;
  expectedvalues[UBound] = expect;
  UBound++;
}


function test()
{
  enterFunc ('test');
  printBugNumber (bug);
  printStatus (summary);

  for (var i = 0; i < UBound; i++)
  {
    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
  }

  exitFunc ('test');
}