tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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regress-87231.js (2991B)

      1 /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 /*
      7 * Date: 22 June 2001
      8 *
      9 * SUMMARY:  Regression test for Bugzilla bug 87231:
     10 * "Regular expression /(A)?(A.*)/ picks 'A' twice"
     11 *
     12 * See http://bugzilla.mozilla.org/show_bug.cgi?id=87231
     13 * Key case:
     14 *
     15 *            pattern = /^(A)?(A.*)$/;
     16 *            string = 'A';
     17 *            expectedmatch = Array('A', '', 'A');
     18 *
     19 *
     20 * We expect the 1st subexpression (A)? NOT to consume the single 'A'.
     21 * Recall that "?" means "match 0 or 1 times". Here, it should NOT do
     22 * greedy matching: it should match 0 times instead of 1. This allows
     23 * the 2nd subexpression to make the only match it can: the single 'A'.
     24 * Such "altruism" is the only way there can be a successful global match...
     25 */
     26 //-----------------------------------------------------------------------------
     27 var i = 0;
     28 var BUGNUMBER = 87231;
     29 var cnEmptyString = '';
     30 var summary = 'Testing regular expression /(A)?(A.*)/';
     31 var status = '';
     32 var statusmessages = new Array();
     33 var pattern = '';
     34 var patterns = new Array();
     35 var string = '';
     36 var strings = new Array();
     37 var actualmatch = '';
     38 var actualmatches = new Array();
     39 var expectedmatch = '';
     40 var expectedmatches = new Array();
     41 
     42 
     43 pattern = /^(A)?(A.*)$/;
     44 status = inSection(1);
     45 string = 'AAA';
     46 actualmatch = string.match(pattern);
     47 expectedmatch = Array('AAA', 'A', 'AA');
     48 addThis();
     49 
     50 status = inSection(2);
     51 string = 'AA';
     52 actualmatch = string.match(pattern);
     53 expectedmatch = Array('AA', 'A', 'A');
     54 addThis();
     55 
     56 status = inSection(3);
     57 string = 'A';
     58 actualmatch = string.match(pattern);
     59 expectedmatch = Array('A', undefined, 'A'); // 'altruistic' case: see above
     60 addThis();
     61 
     62 
     63 pattern = /(A)?(A.*)/;
     64 var strL = 'zxcasd;fl\\\  ^';
     65 var strR = 'aaAAaaaf;lrlrzs';
     66 
     67 status = inSection(4);
     68 string =  strL + 'AAA' + strR;
     69 actualmatch = string.match(pattern);
     70 expectedmatch = Array('AAA' + strR, 'A', 'AA' + strR);
     71 addThis();
     72 
     73 status = inSection(5);
     74 string =  strL + 'AA' + strR;
     75 actualmatch = string.match(pattern);
     76 expectedmatch = Array('AA' + strR, 'A', 'A' + strR);
     77 addThis();
     78 
     79 status = inSection(6);
     80 string =  strL + 'A' + strR;
     81 actualmatch = string.match(pattern);
     82 expectedmatch = Array('A' + strR, undefined, 'A' + strR); // 'altruistic' case: see above
     83 addThis();
     84 
     85 
     86 
     87 //-------------------------------------------------------------------------------------------------
     88 test();
     89 //-------------------------------------------------------------------------------------------------
     90 
     91 
     92 
     93 function addThis()
     94 {
     95  statusmessages[i] = status;
     96  patterns[i] = pattern;
     97  strings[i] = string;
     98  actualmatches[i] = actualmatch;
     99  expectedmatches[i] = expectedmatch;
    100  i++;
    101 }
    102 
    103 
    104 function test()
    105 {
    106  printBugNumber(BUGNUMBER);
    107  printStatus (summary);
    108  testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
    109 }