gecko/js/tests/ecma_3/RegExp/regress-87231.js

146 lines
4.5 KiB
JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* 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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* Date: 22 June 2001
*
* SUMMARY: Regression test for Bugzilla bug 87231:
* "Regular expression /(A)?(A.*)/ picks 'A' twice"
*
* See http://bugzilla.mozilla.org/show_bug.cgi?id=87231
* Key case:
*
* pattern = /^(A)?(A.*)$/;
* string = 'A';
* expectedmatch = Array('A', '', 'A');
*
*
* We expect the 1st subexpression (A)? NOT to consume the single 'A'.
* Recall that "?" means "match 0 or 1 times". Here, it should NOT do
* greedy matching: it should match 0 times instead of 1. This allows
* the 2nd subexpression to make the only match it can: the single 'A'.
* Such "altruism" is the only way there can be a successful global match...
*/
//-----------------------------------------------------------------------------
var gTestfile = 'regress-87231.js';
var i = 0;
var BUGNUMBER = 87231;
var cnEmptyString = '';
var summary = 'Testing regular expression /(A)?(A.*)/';
var status = '';
var statusmessages = new Array();
var pattern = '';
var patterns = new Array();
var string = '';
var strings = new Array();
var actualmatch = '';
var actualmatches = new Array();
var expectedmatch = '';
var expectedmatches = new Array();
pattern = /^(A)?(A.*)$/;
status = inSection(1);
string = 'AAA';
actualmatch = string.match(pattern);
expectedmatch = Array('AAA', 'A', 'AA');
addThis();
status = inSection(2);
string = 'AA';
actualmatch = string.match(pattern);
expectedmatch = Array('AA', 'A', 'A');
addThis();
status = inSection(3);
string = 'A';
actualmatch = string.match(pattern);
expectedmatch = Array('A', undefined, 'A'); // 'altruistic' case: see above
addThis();
pattern = /(A)?(A.*)/;
var strL = 'zxcasd;fl\\\ ^';
var strR = 'aaAAaaaf;lrlrzs';
status = inSection(4);
string = strL + 'AAA' + strR;
actualmatch = string.match(pattern);
expectedmatch = Array('AAA' + strR, 'A', 'AA' + strR);
addThis();
status = inSection(5);
string = strL + 'AA' + strR;
actualmatch = string.match(pattern);
expectedmatch = Array('AA' + strR, 'A', 'A' + strR);
addThis();
status = inSection(6);
string = strL + 'A' + strR;
actualmatch = string.match(pattern);
expectedmatch = Array('A' + strR, undefined, 'A' + strR); // 'altruistic' case: see above
addThis();
//-------------------------------------------------------------------------------------------------
test();
//-------------------------------------------------------------------------------------------------
function addThis()
{
statusmessages[i] = status;
patterns[i] = pattern;
strings[i] = string;
actualmatches[i] = actualmatch;
expectedmatches[i] = expectedmatch;
i++;
}
function test()
{
enterFunc ('test');
printBugNumber(BUGNUMBER);
printStatus (summary);
testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
exitFunc ('test');
}