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): mozilla@pdavis.cx, pschwartau@netscape.com
20* Date: 22 October 2001
21*
22* SUMMARY: Regression test for Bugzilla bug 105972:
23* "/^.*?$/ will not match anything"
24*
25* See http://bugzilla.mozilla.org/show_bug.cgi?id=105972
26*/
27//-----------------------------------------------------------------------------
28var i = 0;
29var bug = 105972;
30var summary = 'Regression test for Bugzilla bug 105972';
31var cnEmptyString = '';
32var status = '';
33var statusmessages = new Array();
34var pattern = '';
35var patterns = new Array();
36var string = '';
37var strings = new Array();
38var actualmatch = '';
39var actualmatches = new Array();
40var expectedmatch = '';
41var expectedmatches = new Array();
42
43
44/*
45 * The bug: this match was coming up null in Rhino and SpiderMonkey.
46 * It should match the whole string. The reason:
47 *
48 * The * operator is greedy, but *? is non-greedy: it will stop
49 * at the simplest match it can find. But the pattern here asks us
50 * to match till the end of the string. So the simplest match must
51 * go all the way out to the end, and *? has no choice but to do it.
52 */
53status = inSection(1);
54pattern = /^.*?$/;
55string = 'Hello World';
56actualmatch = string.match(pattern);
57expectedmatch = Array(string);
58addThis();
59
60
61/*
62 * Leave off the '$' condition - here we expect the empty string.
63 * Unlike the above pattern, we don't have to match till the end of
64 * the string, so the non-greedy operator *? doesn't try to...
65 */
66status = inSection(2);
67pattern = /^.*?/;
68string = 'Hello World';
69actualmatch = string.match(pattern);
70expectedmatch = Array(cnEmptyString);
71addThis();
72
73
74/*
75 * Try '$' combined with an 'or' operator.
76 *
77 * The operator *? will consume the string from left to right,
78 * attempting to satisfy the condition (:|$). When it hits ':',
79 * the match will stop because the operator *? is non-greedy.
80 *
81 * The submatch $1 = (:|$) will contain the ':'
82 */
83status = inSection(3);
84pattern = /^.*?(:|$)/;
85string = 'Hello: World';
86actualmatch = string.match(pattern);
87expectedmatch = Array('Hello:', ':');
88addThis();
89
90
91/*
92 * Again, '$' combined with an 'or' operator.
93 *
94 * The operator * will consume the string from left to right,
95 * attempting to satisfy the condition (:|$). When it hits ':',
96 * the match will not stop since * is greedy. The match will
97 * continue until it hits $, the end-of-string boundary.
98 *
99 * The submatch $1 = (:|$) will contain the empty string
100 * conceived to exist at the end-of-string boundary.
101 */
102status = inSection(4);
103pattern = /^.*(:|$)/;
104string = 'Hello: World';
105actualmatch = string.match(pattern);
106expectedmatch = Array(string, cnEmptyString);
107addThis();
108
109
110
111
112//-----------------------------------------------------------------------------
113test();
114//-----------------------------------------------------------------------------
115
116
117
118function addThis()
119{
120  statusmessages[i] = status;
121  patterns[i] = pattern;
122  strings[i] = string;
123  actualmatches[i] = actualmatch;
124  expectedmatches[i] = expectedmatch;
125  i++;
126}
127
128
129function test()
130{
131  enterFunc ('test');
132  printBugNumber (bug);
133  printStatus (summary);
134  testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
135  exitFunc ('test');
136}
137