/* ***** 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) 2003 * the Initial Developer. All Rights Reserved. * * Contributor(s): bzbarsky@mit.edu, 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: 14 Mar 2003 * SUMMARY: Testing left-associativity of the + operator * * See ECMA-262 Ed.3, Section 11.6.1, "The Addition operator" * See http://bugzilla.mozilla.org/show_bug.cgi?id=196290 * * The upshot: |a + b + c| should always equal |(a + b) + c| * */ //----------------------------------------------------------------------------- var UBound = 0; var bug = 196290; var summary = 'Testing left-associativity of the + operator'; var status = ''; var statusitems = []; var actual = ''; var actualvalues = []; var expect= ''; var expectedvalues = []; status = inSection(1); actual = 1 + 1 + 'px'; expect = '2px'; addThis(); status = inSection(2); actual = 'px' + 1 + 1; expect = 'px11'; addThis(); status = inSection(3); actual = 1 + 1 + 1 + 'px'; expect = '3px'; addThis(); status = inSection(4); actual = 1 + 1 + 'a' + 1 + 1 + 'b'; expect = '2a11b'; addThis(); /* * The next sections test the + operator via eval() */ status = inSection(5); actual = sumThese(1, 1, 'a', 1, 1, 'b'); expect = '2a11b'; addThis(); status = inSection(6); actual = sumThese(new Number(1), new Number(1), 'a'); expect = '2a'; addThis(); status = inSection(7); actual = sumThese('a', new Number(1), new Number(1)); expect = 'a11'; addThis(); //----------------------------------------------------------------------------- test(); //----------------------------------------------------------------------------- function addThis() { statusitems[UBound] = status; actualvalues[UBound] = actual; expectedvalues[UBound] = expect; UBound++; } /* * Applies the + operator to the provided arguments via eval(). * * Form an eval string of the form 'arg1 + arg2 + arg3', but * remember to add double-quotes inside the eval string around * any argument that is of string type. For example, suppose the * arguments were 11, 'a', 22. Then the eval string should be * * arg1 + quoteThis(arg2) + arg3 * * If we didn't put double-quotes around the string argument, * we'd get this for an eval string: * * '11 + a + 22' * * If we eval() this, we get 'ReferenceError: a is not defined'. * With proper quoting, we get eval('11 + "a" + 22') as desired. */ function sumThese() { var sEval = ''; var arg; var i; var L = arguments.length; for (i=0; i<L; i++) { arg = arguments[i]; if (typeof arg === 'string') arg = quoteThis(arg); if (i < L-1) sEval += arg + ' + '; else sEval += arg; } return eval(sEval); } function quoteThis(x) { return '"' + x + '"'; } function test() { enterFunc('test'); printBugNumber(bug); printStatus(summary); for (var i=0; i<UBound; i++) { reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); } exitFunc ('test'); }