michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  *
michael@0:  * Date:    14 Mar 2003
michael@0:  * SUMMARY: Testing left-associativity of the + operator
michael@0:  *
michael@0:  * See ECMA-262 Ed.3, Section 11.6.1, "The Addition operator"
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=196290
michael@0:  *
michael@0:  * The upshot: |a + b + c| should always equal |(a + b) + c|
michael@0:  *
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var UBound = 0;
michael@0: var BUGNUMBER = 196290;
michael@0: var summary = 'Testing left-associativity of the + operator';
michael@0: var status = '';
michael@0: var statusitems = [];
michael@0: var actual = '';
michael@0: var actualvalues = [];
michael@0: var expect= '';
michael@0: var expectedvalues = [];
michael@0: 
michael@0: 
michael@0: status = inSection(1);
michael@0: actual = 1 + 1 + 'px';
michael@0: expect = '2px';
michael@0: addThis();
michael@0: 
michael@0: status = inSection(2);
michael@0: actual = 'px' + 1 + 1;
michael@0: expect = 'px11';
michael@0: addThis();
michael@0: 
michael@0: status = inSection(3);
michael@0: actual = 1 + 1 + 1 + 'px';
michael@0: expect = '3px';
michael@0: addThis();
michael@0: 
michael@0: status = inSection(4);
michael@0: actual = 1 + 1 + 'a' + 1 + 1 + 'b';
michael@0: expect = '2a11b';
michael@0: addThis();
michael@0: 
michael@0: /*
michael@0:  * The next sections test the + operator via eval()
michael@0:  */
michael@0: status = inSection(5);
michael@0: actual = sumThese(1, 1, 'a', 1, 1, 'b');
michael@0: expect = '2a11b';
michael@0: addThis();
michael@0: 
michael@0: status = inSection(6);
michael@0: actual = sumThese(new Number(1), new Number(1), 'a');
michael@0: expect = '2a';
michael@0: addThis();
michael@0: 
michael@0: status = inSection(7);
michael@0: actual = sumThese('a', new Number(1), new Number(1));
michael@0: expect = 'a11';
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: 
michael@0: 
michael@0: function addThis()
michael@0: {
michael@0:   statusitems[UBound] = status;
michael@0:   actualvalues[UBound] = actual;
michael@0:   expectedvalues[UBound] = expect;
michael@0:   UBound++;
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * Applies the + operator to the provided arguments via eval().
michael@0:  *
michael@0:  * Form an eval string of the form 'arg1 + arg2 + arg3', but
michael@0:  * remember to add double-quotes inside the eval string around
michael@0:  * any argument that is of string type. For example, suppose the
michael@0:  * arguments were 11, 'a', 22. Then the eval string should be
michael@0:  *
michael@0:  *              arg1 + quoteThis(arg2) + arg3
michael@0:  *
michael@0:  * If we didn't put double-quotes around the string argument,
michael@0:  * we'd get this for an eval string:
michael@0:  *
michael@0:  *                     '11 + a + 22'
michael@0:  *
michael@0:  * If we eval() this, we get 'ReferenceError: a is not defined'.
michael@0:  * With proper quoting, we get eval('11 + "a" + 22') as desired.
michael@0:  */
michael@0: function sumThese()
michael@0: {
michael@0:   var sEval = '';
michael@0:   var arg;
michael@0:   var i;
michael@0: 
michael@0:   var L = arguments.length;
michael@0:   for (i=0; i<L; i++)
michael@0:   {
michael@0:     arg = arguments[i];
michael@0:     if (typeof arg === 'string')
michael@0:       arg = quoteThis(arg);
michael@0: 
michael@0:     if (i < L-1)
michael@0:       sEval += arg + ' + ';
michael@0:     else
michael@0:       sEval += arg;
michael@0:   }
michael@0: 
michael@0:   return eval(sEval);
michael@0: }
michael@0: 
michael@0: 
michael@0: function quoteThis(x)
michael@0: {
michael@0:   return '"' + x + '"';
michael@0: }
michael@0: 
michael@0: 
michael@0: function test()
michael@0: {
michael@0:   enterFunc('test');
michael@0:   printBugNumber(BUGNUMBER);
michael@0:   printStatus(summary);
michael@0: 
michael@0:   for (var i=0; i<UBound; i++)
michael@0:   {
michael@0:     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
michael@0:   }
michael@0: 
michael@0:   exitFunc ('test');
michael@0: }