/* ***** 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 * http://www.mozilla.org/NPL/ * * 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 NPL, 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 NPL, 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 UBound = 0; var bug = 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(bug); printStatus(summary); for (var i=0; i<UBound; i++) { reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); } exitFunc ('test'); }