ecma_3/Expressions/11.9.6-1.js

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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
 * http://www.mozilla.org/MPL/
 *
 * 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) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   pschwartau@netscape.com
 *
 * 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
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/*
 *
 * Date:    20 Feb 2002
 * SUMMARY: Testing the comparison |undefined === null|
 * See http://bugzilla.mozilla.org/show_bug.cgi?id=126722
 *
 */
//-----------------------------------------------------------------------------
var gTestfile = '11.9.6-1.js';
var UBound = 0;
var BUGNUMBER = 126722;
var summary = 'Testing the comparison |undefined === null|';
var status = '';
var statusitems = [];
var actual = '';
var actualvalues = [];
var expect= '';
var expectedvalues = [];


status = inSection(1);
if (undefined === null)
  actual = true;
else
  actual = false;
expect = false;
addThis();



status = inSection(2);
switch(true)
{
case (undefined === null) :
  actual = true;
  break;

default:
  actual = false;
}
expect = false;
addThis();



status = inSection(3);
function f3(x)
{
  var res = false;

  switch(true)
  {
  case (x === null) :
    res = true;
    break;

  default:
    // do nothing
  }

  return res;
}

actual = f3(undefined);
expect = false;
addThis();



status = inSection(4);
function f4(arr)
{
  var elt = '';
  var res = false;

  for (i=0; i<arr.length; i++)
  {
    elt = arr[i];

    switch(true)
    {
    case (elt === null) :
      res = true;
      break;

    default:
      // do nothing
    }
  }

  return res;
}

var arr = Array('a', undefined);
actual = f4(arr);
expect = false;
addThis();



status = inSection(5);
function f5(arr)
{
  var len = arr.length;

  for(var i=0; (arr[i]===undefined) && (i<len); i++)
    ; //do nothing
 
  return i;
}

/*
 * An array of 5 undefined elements. Note:
 *
 * The return value of eval(a STATEMENT) is undefined.
 * A non-existent PROPERTY is undefined, not a ReferenceError.
 * No undefined element exists AFTER trailing comma at end.
 *
 */
var arrUndef = [ , undefined, eval('var x = 0'), this.NOT_A_PROPERTY, , ];
actual = f5(arrUndef);
expect = 5;
addThis();



status = inSection(6);
function f6(arr)
{
  var len = arr.length;

  for(var i=0; (arr[i]===null) && (i<len); i++)
    ; //do nothing

  return i;
}

/*
 * Use same array as above. This time we're comparing to |null|, so we expect 0
 */
actual = f6(arrUndef);
expect = 0;
addThis();




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



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


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

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

  exitFunc ('test');
}