2 This file is part of GNUnet
3 (C) 2012 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file regex/test_regex_eval_api.c
22 * @brief test for regex.c
23 * @author Maximilian Szengel
28 #include "gnunet_regex_lib.h"
36 struct Regex_String_Pair
41 enum Match_Result expected_results[20];
44 static const char allowed_literals[] =
45 "0123456789" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz";
48 * Random regex test. Generate a random regex as well as 'str_count' strings to
49 * match it against. Will match using GNUNET_REGEX implementation and compare
50 * the result to glibc regex result. 'rx_length' has to be smaller then 'max_str_len'.
52 * @param rx_length length of the regular expression.
53 * @param max_str_len maximum length of the random strings.
54 * @param str_count number of generated random strings.
56 * @return 0 on success, non 0 otherwise.
59 test_random (unsigned int rx_length, unsigned int max_str_len,
60 unsigned int str_count)
65 char rand_rx[rx_length + 1];
66 char matching_str[str_count][max_str_len + 1];
75 struct GNUNET_REGEX_Automaton *dfa;
77 regmatch_t matchptr[1];
83 // At least one string is needed for matching
84 GNUNET_assert (str_count > 0);
85 // The string should be at least as long as the regex itself
86 GNUNET_assert (max_str_len >= rx_length);
89 matching_strp = matching_str[0];
93 // Generate random regex and a string that matches the regex
94 for (i = 0; i < rx_length; i++)
96 char_op_switch = 0 + (int) (1.0 * rand () / (RAND_MAX + 1.0));
98 if (0 == char_op_switch && !last_was_op)
101 rx_exp = rand () % 4;
115 if (i < rx_length - 1) // '|' cannot be at the end
119 allowed_literals[rand () % (sizeof (allowed_literals) - 1)];
126 allowed_literals[rand () % (sizeof (allowed_literals) - 1)];
130 if (current_char != '+' && current_char != '*' && current_char != '?' &&
133 *matching_strp = current_char;
137 *rand_rxp = current_char;
141 *matching_strp = '\0';
143 // Generate some random strings for matching...
144 // Start at 1, because the first string is generated above during regex generation
145 for (i = 1; i < str_count; i++)
147 str_len = rand () % max_str_len;
148 for (j = 0; j < str_len; j++)
150 allowed_literals[rand () % (sizeof (allowed_literals) - 1)];
151 matching_str[i][str_len] = '\0';
156 for (i = 0; i < str_count; i++)
158 // Match string using DFA
159 dfa = GNUNET_REGEX_construct_dfa (rand_rx, strlen (rand_rx));
162 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Constructing DFA failed\n");
166 eval = GNUNET_REGEX_eval (dfa, matching_str[i]);
167 computed_regex = GNUNET_strdup (GNUNET_REGEX_get_computed_regex (dfa));
168 GNUNET_REGEX_automaton_destroy (dfa);
170 // Match string using glibc regex
171 if (0 != regcomp (&rx, rand_rx, REG_EXTENDED))
173 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
174 "Could not compile regex using regcomp\n");
178 eval_check = regexec (&rx, matching_str[i], 1, matchptr, 0);
181 // Match computed regex
182 if (0 != regcomp (&rx, computed_regex, REG_EXTENDED))
184 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
185 "Could not compile regex using regcomp: %s\n",
190 eval_computed = regexec (&rx, matching_str[i], 1, matchptr, 0);
192 GNUNET_free (computed_regex);
194 // We only want to match the whole string, because that's what our DFA does, too.
195 if (eval_check == 0 &&
196 (matchptr[0].rm_so != 0 ||
197 matchptr[0].rm_eo != strlen (matching_str[i])))
201 if (eval_check != eval)
203 regerror (eval_check, &rx, error, sizeof error);
204 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
205 "Unexpected result:\nregex: %s\nstring: %s\ngnunet regex: %i\nglibc regex: %i\nglibc error: %s\n\n",
206 rand_rx, matching_str, eval, eval_check, error);
214 * Automaton test that compares the result of matching regular expression 'rx'
215 * with the strings and expected results in 'rxstr' with the result of matching
216 * the same strings with glibc regex.
218 * @param a automaton.
219 * @param rx compiled glibc regex.
220 * @param rxstr regular expression and strings with expected results to match against.
222 * @return 0 on successfull, non 0 otherwise
225 test_automaton (struct GNUNET_REGEX_Automaton *a, regex_t * rx,
226 struct Regex_String_Pair *rxstr)
232 regmatch_t matchptr[1];
237 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Automaton was NULL\n");
243 for (i = 0; i < rxstr->string_count; i++)
245 eval = GNUNET_REGEX_eval (a, rxstr->strings[i]);
246 eval_check = regexec (rx, rxstr->strings[i], 1, matchptr, 0);
248 // We only want to match the whole string, because that's what our DFA does, too.
249 if (eval_check == 0 &&
250 (matchptr[0].rm_so != 0 ||
251 matchptr[0].rm_eo != strlen (rxstr->strings[i])))
254 if ((rxstr->expected_results[i] == match && (0 != eval || 0 != eval_check))
255 || (rxstr->expected_results[i] == nomatch &&
256 (0 == eval || 0 == eval_check)))
259 regerror (eval_check, rx, error, sizeof error);
260 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
261 "Unexpected result:\nregex: %s\nstring: %s\nexpected result: %i\n"
262 "gnunet regex: %i\nglibc regex: %i\nglibc error: %s\nrm_so: %i\nrm_eo: %i\n\n",
263 rxstr->regex, rxstr->strings[i], rxstr->expected_results[i],
264 eval, eval_check, error, matchptr[0].rm_so,
272 main (int argc, char *argv[])
274 GNUNET_log_setup ("test-regex",
282 struct GNUNET_REGEX_Automaton *a;
290 struct Regex_String_Pair rxstr[14] = {
292 {"ababcd", "abab", "aabcd", "a", "abb"},
293 {match, nomatch, match, match, nomatch}},
294 {"ab(c|d)+c*(a(b|c)d)+", 5,
295 {"abcdcdcdcdddddabd", "abcd", "abcddddddccccccccccccccccccccccccabdacdabd",
296 "abccccca", "abcdcdcdccdabdabd"},
297 {match, nomatch, match, nomatch, match}},
298 {"ab+c*(a(bx|c)d)+", 5,
299 {"abcdcdcdcdddddabd", "abcd", "abcddddddccccccccccccccccccccccccabdacdabd",
300 "abccccca", "abcdcdcdccdabdabd"},
301 {nomatch, nomatch, nomatch, nomatch, nomatch}},
302 {"a+X*y+c|p|R|Z*K*y*R+w|Y*6+n+h*k*w+V*F|W*B*e*", 1,
303 {"kaXycQepRZKyRwY6nhkwVFWBegNVtLPj39XhJJ6bEifRSZRYZg"},
305 {"k|a+X*y+c|Q*e|p|R|Z*K*y*R+w|Y*6+n+h*k*w+V*F|W*B*e*g|N+V|t+L|P*j*3*9+X*h*J|J*6|b|E*i*f*R+S|Z|R|Y*Z|g*", 1,
306 {"kaXycQepRZKyRwY6nhkwVFWBegNVtLPj39XhJJ6bEifRSZRYZg"},
308 {"F?W+m+2*6*c*s|P?U?a|B|y*i+t+A|V|6*C*7*e?Z*n*i|J?5+g?W*V?7*j?p?1|r?B?C+E+3+6*i+W*P?K?0|D+7?y*m+3?g?K?", 1,
309 {"osfjsodfonONONOnosndfsdnfsd"},
311 {"V|M*o?x*p*d+h+b|E*m?h?Y*E*O?W*W*P+o?Z+H*M|I*q+C*a+5?5*9|b?z|G*y*k?R|p+u|8*h?B+l*H|e|L*O|1|F?v*0?5|C+", 1,
312 {"VMoxpdhbEmhYEOWWPoZHMIqCa559bzGykRpu8hBlHeLO1Fv05C"},
315 {"", "bla", "blabla", "bl", "la", "b", "l", "a"},
316 {match, match, match, nomatch, nomatch, nomatch, nomatch, nomatch}},
317 {"ab(c|d)+c*(a(b|c)+d)+(bla)(bla)*", 8,
318 {"ab", "abcabdbla", "abdcccccccccccabcbccdblablabla", "bl", "la", "b", "l",
320 {nomatch, match, match, nomatch, nomatch, nomatch, nomatch, nomatch}},
322 {"", "a", "aa", "aaa", "aaaa", "aaaaa"},
323 {nomatch, match, match, match, match, match}},
324 {"ab(c|d)+c*(a(b|c)+d)+(bla)+", 1,
328 {"b", "bb", "ac", "", "acb", "bacbacac", "acacac", "abc"},
329 {match, match, match, nomatch, match, match, match, nomatch}},
331 {"", "ab", "c", "abc", "ababcc", "acc", "abac"},
332 {nomatch, match, match, match, match, nomatch, nomatch}},
333 {"ab(c|d)+c*(a(b|c)d)+", 1,
342 for (i = 0; i < 14; i++)
344 if (0 != regcomp (&rx, rxstr[i].regex, REG_EXTENDED))
346 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
347 "Could not compile regex using regcomp()\n");
352 a = GNUNET_REGEX_construct_nfa (rxstr[i].regex, strlen (rxstr[i].regex));
353 check_nfa += test_automaton (a, &rx, &rxstr[i]);
354 GNUNET_REGEX_automaton_destroy (a);
357 a = GNUNET_REGEX_construct_dfa (rxstr[i].regex, strlen (rxstr[i].regex));
358 check_dfa += test_automaton (a, &rx, &rxstr[i]);
359 check_proof = GNUNET_strdup (GNUNET_REGEX_get_computed_regex (a));
360 GNUNET_REGEX_automaton_destroy (a);
361 a = GNUNET_REGEX_construct_dfa (check_proof, strlen (check_proof));
362 check_dfa += test_automaton (a, &rx, &rxstr[i]);
363 GNUNET_REGEX_automaton_destroy (a);
365 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "check_proof: %s\n", check_proof);
366 GNUNET_free_non_null (check_proof);
372 for (i = 0; i < 50; i++)
373 check_rand += test_random (100, 120, 20);
375 return check_nfa + check_dfa + check_rand;