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