1/* 2* The contents of this file are subject to the Netscape Public 3* License Version 1.1 (the "License"); you may not use this file 4* except in compliance with the License. You may obtain a copy of 5* the License at http://www.mozilla.org/NPL/ 6* 7* Software distributed under the License is distributed on an "AS IS" 8* basis, WITHOUT WARRANTY OF ANY KIND, either expressed 9* or implied. See the License for the specific language governing 10* rights and limitations under the License. 11* 12* The Original Code is mozilla.org code. 13* 14* The Initial Developer of the Original Code is Netscape 15* Communications Corporation. Portions created by Netscape are 16* Copyright (C) 1998 Netscape Communications Corporation. 17* All Rights Reserved. 18* 19* Contributor(s): pschwartau@netscape.com 20* Date: 22 June 2001 21* 22* SUMMARY: Regression test for Bugzilla bug 87231: 23* "Regular expression /(A)?(A.*)/ picks 'A' twice" 24* 25* See http://bugzilla.mozilla.org/show_bug.cgi?id=87231 26* Key case: 27* 28* pattern = /^(A)?(A.*)$/; 29* string = 'A'; 30* expectedmatch = Array('A', '', 'A'); 31* 32* 33* We expect the 1st subexpression (A)? NOT to consume the single 'A'. 34* Recall that "?" means "match 0 or 1 times". Here, it should NOT do 35* greedy matching: it should match 0 times instead of 1. This allows 36* the 2nd subexpression to make the only match it can: the single 'A'. 37* Such "altruism" is the only way there can be a successful global match... 38*/ 39//------------------------------------------------------------------------------------------------- 40var i = 0; 41var bug = 87231; 42var cnEmptyString = ''; 43var summary = 'Testing regular expression /(A)?(A.*)/'; 44var status = ''; 45var statusmessages = new Array(); 46var pattern = ''; 47var patterns = new Array(); 48var string = ''; 49var strings = new Array(); 50var actualmatch = ''; 51var actualmatches = new Array(); 52var expectedmatch = ''; 53var expectedmatches = new Array(); 54 55 56pattern = /^(A)?(A.*)$/; 57 status = inSection(1); 58 string = 'AAA'; 59 actualmatch = string.match(pattern); 60 expectedmatch = Array('AAA', 'A', 'AA'); 61 addThis(); 62 63 status = inSection(2); 64 string = 'AA'; 65 actualmatch = string.match(pattern); 66 expectedmatch = Array('AA', 'A', 'A'); 67 addThis(); 68 69 status = inSection(3); 70 string = 'A'; 71 actualmatch = string.match(pattern); 72 expectedmatch = Array('A', undefined, 'A'); // 'altruistic' case: see above 73 addThis(); 74 75 76pattern = /(A)?(A.*)/; 77var strL = 'zxcasd;fl\\\ ^'; 78var strR = 'aaAAaaaf;lrlrzs'; 79 80 status = inSection(4); 81 string = strL + 'AAA' + strR; 82 actualmatch = string.match(pattern); 83 expectedmatch = Array('AAA' + strR, 'A', 'AA' + strR); 84 addThis(); 85 86 status = inSection(5); 87 string = strL + 'AA' + strR; 88 actualmatch = string.match(pattern); 89 expectedmatch = Array('AA' + strR, 'A', 'A' + strR); 90 addThis(); 91 92 status = inSection(6); 93 string = strL + 'A' + strR; 94 actualmatch = string.match(pattern); 95 expectedmatch = Array('A' + strR, undefined, 'A' + strR); // 'altruistic' case: see above 96 addThis(); 97 98 99 100//------------------------------------------------------------------------------------------------- 101test(); 102//------------------------------------------------------------------------------------------------- 103 104 105 106function addThis() 107{ 108 statusmessages[i] = status; 109 patterns[i] = pattern; 110 strings[i] = string; 111 actualmatches[i] = actualmatch; 112 expectedmatches[i] = expectedmatch; 113 i++; 114} 115 116 117function test() 118{ 119 enterFunc ('test'); 120 printBugNumber (bug); 121 printStatus (summary); 122 testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches); 123 exitFunc ('test'); 124} 125