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 October 2001
michael@0:  *
michael@0:  * SUMMARY: Regression test for Bugzilla bug 105972:
michael@0:  * "/^.*?$/ will not match anything"
michael@0:  *
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=105972
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var i = 0;
michael@0: var BUGNUMBER = 105972;
michael@0: var summary = 'Regression test for Bugzilla bug 105972';
michael@0: var cnEmptyString = '';
michael@0: var status = '';
michael@0: var statusmessages = new Array();
michael@0: var pattern = '';
michael@0: var patterns = new Array();
michael@0: var string = '';
michael@0: var strings = new Array();
michael@0: var actualmatch = '';
michael@0: var actualmatches = new Array();
michael@0: var expectedmatch = '';
michael@0: var expectedmatches = new Array();
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * The bug: this match was coming up null in Rhino and SpiderMonkey.
michael@0:  * It should match the whole string. The reason:
michael@0:  *
michael@0:  * The * operator is greedy, but *? is non-greedy: it will stop
michael@0:  * at the simplest match it can find. But the pattern here asks us
michael@0:  * to match till the end of the string. So the simplest match must
michael@0:  * go all the way out to the end, and *? has no choice but to do it.
michael@0:  */
michael@0: status = inSection(1);
michael@0: pattern = /^.*?$/;
michael@0: string = 'Hello World';
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array(string);
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Leave off the '$' condition - here we expect the empty string.
michael@0:  * Unlike the above pattern, we don't have to match till the end of
michael@0:  * the string, so the non-greedy operator *? doesn't try to...
michael@0:  */
michael@0: status = inSection(2);
michael@0: pattern = /^.*?/;
michael@0: string = 'Hello World';
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array(cnEmptyString);
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Try '$' combined with an 'or' operator.
michael@0:  *
michael@0:  * The operator *? will consume the string from left to right,
michael@0:  * attempting to satisfy the condition (:|$). When it hits ':',
michael@0:  * the match will stop because the operator *? is non-greedy.
michael@0:  *
michael@0:  * The submatch $1 = (:|$) will contain the ':'
michael@0:  */
michael@0: status = inSection(3);
michael@0: pattern = /^.*?(:|$)/;
michael@0: string = 'Hello: World';
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array('Hello:', ':');
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Again, '$' combined with an 'or' operator.
michael@0:  *
michael@0:  * The operator * will consume the string from left to right,
michael@0:  * attempting to satisfy the condition (:|$). When it hits ':',
michael@0:  * the match will not stop since * is greedy. The match will
michael@0:  * continue until it hits $, the end-of-string boundary.
michael@0:  *
michael@0:  * The submatch $1 = (:|$) will contain the empty string
michael@0:  * conceived to exist at the end-of-string boundary.
michael@0:  */
michael@0: status = inSection(4);
michael@0: pattern = /^.*(:|$)/;
michael@0: string = 'Hello: World';
michael@0: actualmatch = string.match(pattern);
michael@0: expectedmatch = Array(string, cnEmptyString);
michael@0: addThis();
michael@0: 
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: }