tests/mozilla/ecma_3/Expressions/11.9.6-1.js

   1 /* ***** BEGIN LICENSE BLOCK *****
   2 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
   3 *
   4 * The contents of this file are subject to the Netscape Public License
   5 * Version 1.1 (the "License"); you may not use this file except in
   6 * compliance with the License. You may obtain a copy of the License at
   7 * http://www.mozilla.org/NPL/
   8 *
   9 * Software distributed under the License is distributed on an "AS IS" basis,
  10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11 * for the specific language governing rights and limitations under the
  12 * License.
  13 *
  14 * The Original Code is JavaScript Engine testing utilities.
  15 *
  16 * The Initial Developer of the Original Code is Netscape Communications Corp.
  17 * Portions created by the Initial Developer are Copyright (C) 2002
  18 * the Initial Developer. All Rights Reserved.
  19 *
  20 * Contributor(s): pschwartau@netscape.com
  21 *
  22 * Alternatively, the contents of this file may be used under the terms of
  23 * either the GNU General Public License Version 2 or later (the "GPL"), or
  24 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  25 * in which case the provisions of the GPL or the LGPL are applicable instead
  26 * of those above. If you wish to allow use of your version of this file only
  27 * under the terms of either the GPL or the LGPL, and not to allow others to
  28 * use your version of this file under the terms of the NPL, indicate your
  29 * decision by deleting the provisions above and replace them with the notice
  30 * and other provisions required by the GPL or the LGPL. If you do not delete
  31 * the provisions above, a recipient may use your version of this file under
  32 * the terms of any one of the NPL, the GPL or the LGPL.
  33 *
  34 * ***** END LICENSE BLOCK *****
  35 *
  36 *
  37 * Date:    20 Feb 2002
  38 * SUMMARY: Testing the comparison |undefined === null|
  39 * See http://bugzilla.mozilla.org/show_bug.cgi?id=126722
  40 *
  41 */
  42 //-----------------------------------------------------------------------------
  43 var UBound = 0;
  44 var bug = 126722;
  45 var summary = 'Testing the comparison |undefined === null|';
  46 var status = '';
  47 var statusitems = [];
  48 var actual = '';
  49 var actualvalues = [];
  50 var expect= '';
  51 var expectedvalues = [];
  52
  53
  54 status = inSection(1);
  55 if (undefined === null)
  56   actual = true;
  57 else
  58   actual = false;
  59 expect = false;
  60 addThis();
  61
  62
  63
  64 status = inSection(2);
  65 switch(true)
  66 {
  67   case (undefined === null) :
  68     actual = true;
  69     break;
  70
  71   default:
  72     actual = false;
  73 }
  74 expect = false;
  75 addThis();
  76
  77
  78
  79 status = inSection(3);
  80 function f3(x)
  81 {
  82   var res = false;
  83
  84   switch(true)
  85   {
  86     case (x === null) :
  87       res = true;
  88       break;
  89
  90     default:
  91       // do nothing
  92   }
  93
  94   return res;
  95 }
  96
  97 actual = f3(undefined);
  98 expect = false;
  99 addThis();
 100
 101
 102
 103 status = inSection(4);
 104 function f4(arr)
 105 {
 106   var elt = '';
 107   var res = false;
 108
 109   for (i=0; i<arr.length; i++)
 110   {
 111     elt = arr[i];
 112
 113     switch(true)
 114     {
 115       case (elt === null) :
 116         res = true;
 117         break;
 118
 119       default:
 120         // do nothing
 121     }
 122   }
 123
 124   return res;
 125 }
 126
 127 var arr = Array('a', undefined);
 128 actual = f4(arr);
 129 expect = false;
 130 addThis();
 131
 132
 133
 134 status = inSection(5);
 135 function f5(arr)
 136 {
 137   var len = arr.length;
 138
 139   for(var i=0; (arr[i]===undefined) && (i<len); i++)
 140     ; //do nothing
 141
 142   return i;
 143 }
 144
 145 /*
 146  * An array of 5 undefined elements. Note:
 147  *
 148  * The return value of eval(a STATEMENT) is undefined.
 149  * A non-existent PROPERTY is undefined, not a ReferenceError.
 150  * No undefined element exists AFTER trailing comma at end.
 151  *
 152  */
 153 var arrUndef = [ , undefined, eval('var x = 0'), this.NOT_A_PROPERTY, , ];
 154 actual = f5(arrUndef);
 155 expect = 5;
 156 addThis();
 157
 158
 159
 160 status = inSection(6);
 161 function f6(arr)
 162 {
 163   var len = arr.length;
 164
 165   for(var i=0; (arr[i]===null) && (i<len); i++)
 166     ; //do nothing
 167
 168   return i;
 169 }
 170
 171 /*
 172  * Use same array as above. This time we're comparing to |null|, so we expect 0
 173  */
 174 actual = f6(arrUndef);
 175 expect = 0;
 176 addThis();
 177
 178
 179
 180
 181 //-----------------------------------------------------------------------------
 182 test();
 183 //-----------------------------------------------------------------------------
 184
 185
 186
 187 function addThis()
 188 {
 189   statusitems[UBound] = status;
 190   actualvalues[UBound] = actual;
 191   expectedvalues[UBound] = expect;
 192   UBound++;
 193 }
 194
 195
 196 function test()
 197 {
 198   enterFunc('test');
 199   printBugNumber(bug);
 200   printStatus(summary);
 201
 202   for (var i=0; i<UBound; i++)
 203   {
 204     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
 205   }
 206
 207   exitFunc ('test');
 208 }