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//----------------------------------------------------------------------------- 43var UBound = 0; 44var bug = 126722; 45var summary = 'Testing the comparison |undefined === null|'; 46var status = ''; 47var statusitems = []; 48var actual = ''; 49var actualvalues = []; 50var expect= ''; 51var expectedvalues = []; 52 53 54status = inSection(1); 55if (undefined === null) 56 actual = true; 57else 58 actual = false; 59expect = false; 60addThis(); 61 62 63 64status = inSection(2); 65switch(true) 66{ 67 case (undefined === null) : 68 actual = true; 69 break; 70 71 default: 72 actual = false; 73} 74expect = false; 75addThis(); 76 77 78 79status = inSection(3); 80function 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 97actual = f3(undefined); 98expect = false; 99addThis(); 100 101 102 103status = inSection(4); 104function 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 127var arr = Array('a', undefined); 128actual = f4(arr); 129expect = false; 130addThis(); 131 132 133 134status = inSection(5); 135function 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 */ 153var arrUndef = [ , undefined, eval('var x = 0'), this.NOT_A_PROPERTY, , ]; 154actual = f5(arrUndef); 155expect = 5; 156addThis(); 157 158 159 160status = inSection(6); 161function 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 */ 174actual = f6(arrUndef); 175expect = 0; 176addThis(); 177 178 179 180 181//----------------------------------------------------------------------------- 182test(); 183//----------------------------------------------------------------------------- 184 185 186 187function addThis() 188{ 189 statusitems[UBound] = status; 190 actualvalues[UBound] = actual; 191 expectedvalues[UBound] = expect; 192 UBound++; 193} 194 195 196function 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} 209