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:  * Date: 22 June 2001
michael@0:  *
michael@0:  * SUMMARY:  Regression test for Bugzilla bug 87231:
michael@0:  * "Regular expression /(A)?(A.*)/ picks 'A' twice"
michael@0:  *
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=87231
michael@0:  * Key case:
michael@0:  *
michael@0:  *            pattern = /^(A)?(A.*)$/;
michael@0:  *            string = 'A';
michael@0:  *            expectedmatch = Array('A', '', 'A');
michael@0:  *
michael@0:  *
michael@0:  * We expect the 1st subexpression (A)? NOT to consume the single 'A'.
michael@0:  * Recall that "?" means "match 0 or 1 times". Here, it should NOT do
michael@0:  * greedy matching: it should match 0 times instead of 1. This allows
michael@0:  * the 2nd subexpression to make the only match it can: the single 'A'.
michael@0:  * Such "altruism" is the only way there can be a successful global match...
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var i = 0;
michael@0: var BUGNUMBER = 87231;
michael@0: var cnEmptyString = '';
michael@0: var summary = 'Testing regular expression /(A)?(A.*)/';
michael@0: var status = '';
michael@0: var statusmessages = new Array();
michael@0: var pattern = '';
michael@0: var patterns = new Array();
michael@0: var string = '';
michael@0: var strings = new Array();
michael@0: var actualmatch = '';
michael@0: var actualmatches = new Array();
michael@0: var expectedmatch = '';
michael@0: var expectedmatches = new Array();
michael@0: 
michael@0: 
michael@0: pattern = /^(A)?(A.*)$/;
michael@0: status = inSection(1);
michael@0: string = 'AAA';
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array('AAA', 'A', 'AA');
michael@0: addThis();
michael@0: 
michael@0: status = inSection(2);
michael@0: string = 'AA';
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array('AA', 'A', 'A');
michael@0: addThis();
michael@0: 
michael@0: status = inSection(3);
michael@0: string = 'A';
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array('A', undefined, 'A'); // 'altruistic' case: see above
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: pattern = /(A)?(A.*)/;
michael@0: var strL = 'zxcasd;fl\\\  ^';
michael@0: var strR = 'aaAAaaaf;lrlrzs';
michael@0: 
michael@0: status = inSection(4);
michael@0: string =  strL + 'AAA' + strR;
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array('AAA' + strR, 'A', 'AA' + strR);
michael@0: addThis();
michael@0: 
michael@0: status = inSection(5);
michael@0: string =  strL + 'AA' + strR;
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array('AA' + strR, 'A', 'A' + strR);
michael@0: addThis();
michael@0: 
michael@0: status = inSection(6);
michael@0: string =  strL + 'A' + strR;
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array('A' + strR, undefined, 'A' + strR); // 'altruistic' case: see above
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:   statusmessages[i] = status;
michael@0:   patterns[i] = pattern;
michael@0:   strings[i] = string;
michael@0:   actualmatches[i] = actualmatch;
michael@0:   expectedmatches[i] = expectedmatch;
michael@0:   i++;
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:   testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
michael@0:   exitFunc ('test');
michael@0: }