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 (at) 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.*)$/; 29 * string = 'A'; 30 * expectedmatch = Array('A', '', 'A'); 31 * 32 * 33 * We expect the 1st subexpression (A)? NOT to consume the single 'A'. 34 * Recall that "?" means "match 0 or 1 times". Here, it should NOT do 35 * greedy matching: it should match 0 times instead of 1. This allows 36 * the 2nd subexpression to make the only match it can: the single 'A'. 37 * Such "altruism" is the only way there can be a successful global match... 38 */ 39 //------------------------------------------------------------------------------------------------- 40 var i = 0; 41 var bug = 87231; 42 var cnEmptyString = ''; 43 var summary = 'Testing regular expression /(A)?(A.*)/'; 44 var status = ''; 45 var statusmessages = new Array(); 46 var pattern = ''; 47 var patterns = new Array(); 48 var string = ''; 49 var strings = new Array(); 50 var actualmatch = ''; 51 var actualmatches = new Array(); 52 var expectedmatch = ''; 53 var expectedmatches = new Array(); 54 55 56 pattern = /^(A)?(A.*)$/; 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 76 pattern = /(A)?(A.*)/; 77 var strL = 'zxcasd;fl\\\ ^'; 78 var 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 //------------------------------------------------------------------------------------------------- 101 test(); 102 //------------------------------------------------------------------------------------------------- 103 104 105 106 function 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 } 115 116 117 function test() 118 { 119 enterFunc ('test'); 120 printBugNumber (bug); 121 printStatus (summary); 122 testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches); 123 exitFunc ('test'); 124 } 125
