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40 * Date: 22 October 2001
42 * SUMMARY: Regression test for Bugzilla bug 105972:
43 * "/^.*?$/ will not match anything"
45 * See http://bugzilla.mozilla.org/show_bug.cgi?id=105972
47 //-----------------------------------------------------------------------------
49 var BUGNUMBER = 105972;
50 var summary = 'Regression test for Bugzilla bug 105972';
51 var cnEmptyString = '';
53 var statusmessages = new Array();
55 var patterns = new Array();
57 var strings = new Array();
59 var actualmatches = new Array();
60 var expectedmatch = '';
61 var expectedmatches = new Array();
65 * The bug: this match was coming up null in Rhino and SpiderMonkey.
66 * It should match the whole string. The reason:
68 * The * operator is greedy, but *? is non-greedy: it will stop
69 * at the simplest match it can find. But the pattern here asks us
70 * to match till the end of the string. So the simplest match must
71 * go all the way out to the end, and *? has no choice but to do it.
73 status = inSection(1);
75 string = 'Hello World';
76 actualmatch = string.match(pattern);
77 expectedmatch = Array(string);
82 * Leave off the '$' condition - here we expect the empty string.
83 * Unlike the above pattern, we don't have to match till the end of
84 * the string, so the non-greedy operator *? doesn't try to...
86 status = inSection(2);
88 string = 'Hello World';
89 actualmatch = string.match(pattern);
90 expectedmatch = Array(cnEmptyString);
95 * Try '$' combined with an 'or' operator.
97 * The operator *? will consume the string from left to right,
98 * attempting to satisfy the condition (:|$). When it hits ':',
99 * the match will stop because the operator *? is non-greedy.
101 * The submatch $1 = (:|$) will contain the ':'
103 status = inSection(3);
104 pattern = /^.*?(:|$)/;
105 string = 'Hello: World';
106 actualmatch = string.match(pattern);
107 expectedmatch = Array('Hello:', ':');
112 * Again, '$' combined with an 'or' operator.
114 * The operator * will consume the string from left to right,
115 * attempting to satisfy the condition (:|$). When it hits ':',
116 * the match will not stop since * is greedy. The match will
117 * continue until it hits $, the end-of-string boundary.
119 * The submatch $1 = (:|$) will contain the empty string
120 * conceived to exist at the end-of-string boundary.
122 status = inSection(4);
123 pattern = /^.*(:|$)/;
124 string = 'Hello: World';
125 actualmatch = string.match(pattern);
126 expectedmatch = Array(string, cnEmptyString);
132 //-----------------------------------------------------------------------------
134 //-----------------------------------------------------------------------------
140 statusmessages[i] = status;
141 patterns[i] = pattern;
143 actualmatches[i] = actualmatch;
144 expectedmatches[i] = expectedmatch;
152 printBugNumber(BUGNUMBER);
153 printStatus (summary);
154 testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);