/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* 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.*)$/;
* string = 'A';
* expectedmatch = Array('A', '', 'A');
*
*
* We expect the 1st subexpression (A)? NOT to consume the single 'A'.
* Recall that "?" means "match 0 or 1 times". Here, it should NOT do
* greedy matching: it should match 0 times instead of 1. This allows
* the 2nd subexpression to make the only match it can: the single 'A'.
* Such "altruism" is the only way there can be a successful global match...
*/
//-----------------------------------------------------------------------------
var i = 0;
var BUGNUMBER = 87231;
var cnEmptyString =
'';
var summary =
'Testing regular expression /(A)?(A.*)/';
var status =
'';
var statusmessages =
new Array();
var pattern =
'';
var patterns =
new Array();
var string =
'';
var strings =
new Array();
var actualmatch =
'';
var actualmatches =
new Array();
var expectedmatch =
'';
var expectedmatches =
new Array();
pattern = /^(A)?(A.*)$/;
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()
{
printBugNumber(BUGNUMBER);
printStatus (summary);
testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
}
