string/test-strpbrk.c

   1 /* Test and measure strpbrk functions.
   2    Copyright (C) 1999-2013 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef STRPBRK_RESULT
  21 # define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
  22 # define RES_TYPE char *
  23 # define TEST_MAIN
  24 # define TEST_NAME "strpbrk"
  25 # include "test-string.h"
  26
  27 typedef char *(*proto_t) (const char *, const char *);
  28 char *simple_strpbrk (const char *, const char *);
  29 char *stupid_strpbrk (const char *, const char *);
  30
  31 IMPL (stupid_strpbrk, 0)
  32 IMPL (simple_strpbrk, 0)
  33 IMPL (strpbrk, 1)
  34
  35 char *
  36 simple_strpbrk (const char *s, const char *rej)
  37 {
  38   const char *r;
  39   char c;
  40
  41   while ((c = *s++) != '\0')
  42     for (r = rej; *r != '\0'; ++r)
  43       if (*r == c)
  44         return (char *) s - 1;
  45   return NULL;
  46 }
  47
  48 char *
  49 stupid_strpbrk (const char *s, const char *rej)
  50 {
  51   size_t ns = strlen (s), nrej = strlen (rej);
  52   size_t i, j;
  53
  54   for (i = 0; i < ns; ++i)
  55     for (j = 0; j < nrej; ++j)
  56       if (s[i] == rej[j])
  57         return (char *) s + i;
  58   return NULL;
  59 }
  60 #endif
  61
  62 static void
  63 do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
  64 {
  65   RES_TYPE res = CALL (impl, s, rej);
  66   if (res != exp_res)
  67     {
  68       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  69              (void *) res, (void *) exp_res);
  70       ret = 1;
  71       return;
  72     }
  73 }
  74
  75 static void
  76 do_test (size_t align, size_t pos, size_t len)
  77 {
  78   size_t i;
  79   int c;
  80   RES_TYPE result;
  81   char *rej, *s;
  82
  83   align &= 7;
  84   if (align + pos + 10 >= page_size || len > 240)
  85     return;
  86
  87   rej = (char *) (buf2 + (random () & 255));
  88   s = (char *) (buf1 + align);
  89
  90   for (i = 0; i < len; ++i)
  91     {
  92       rej[i] = random () & 255;
  93       if (!rej[i])
  94         rej[i] = random () & 255;
  95       if (!rej[i])
  96         rej[i] = 1 + (random () & 127);
  97     }
  98   rej[len] = '\0';
  99   for (c = 1; c <= 255; ++c)
 100     if (strchr (rej, c) == NULL)
 101       break;
 102
 103   for (i = 0; i < pos; ++i)
 104     {
 105       s[i] = random () & 255;
 106       if (strchr (rej, s[i]))
 107         {
 108           s[i] = random () & 255;
 109           if (strchr (rej, s[i]))
 110             s[i] = c;
 111         }
 112     }
 113   s[pos] = rej[random () % (len + 1)];
 114   if (s[pos])
 115     {
 116       for (i = pos + 1; i < pos + 10; ++i)
 117         s[i] = random () & 255;
 118       s[i] = '\0';
 119     }
 120   result = STRPBRK_RESULT (s, pos);
 121
 122   FOR_EACH_IMPL (impl, 0)
 123     do_one_test (impl, s, rej, result);
 124 }
 125
 126 static void
 127 do_random_tests (void)
 128 {
 129   size_t i, j, n, align, pos, len, rlen;
 130   RES_TYPE result;
 131   int c;
 132   unsigned char *p = buf1 + page_size - 512;
 133   unsigned char *rej;
 134
 135   for (n = 0; n < ITERATIONS; n++)
 136     {
 137       align = random () & 15;
 138       pos = random () & 511;
 139       if (pos + align >= 511)
 140         pos = 510 - align - (random () & 7);
 141       len = random () & 511;
 142       if (pos >= len && (random () & 1))
 143         len = pos + 1 + (random () & 7);
 144       if (len + align >= 512)
 145         len = 511 - align - (random () & 7);
 146       if (random () & 1)
 147         rlen = random () & 63;
 148       else
 149         rlen = random () & 15;
 150       rej = buf2 + page_size - rlen - 1 - (random () & 7);
 151       for (i = 0; i < rlen; ++i)
 152         {
 153           rej[i] = random () & 255;
 154           if (!rej[i])
 155             rej[i] = random () & 255;
 156           if (!rej[i])
 157             rej[i] = 1 + (random () & 127);
 158         }
 159       rej[i] = '\0';
 160       for (c = 1; c <= 255; ++c)
 161         if (strchr ((char *) rej, c) == NULL)
 162           break;
 163       j = (pos > len ? pos : len) + align + 64;
 164       if (j > 512)
 165         j = 512;
 166
 167       for (i = 0; i < j; i++)
 168         {
 169           if (i == len + align)
 170             p[i] = '\0';
 171           else if (i == pos + align)
 172             p[i] = rej[random () % (rlen + 1)];
 173           else if (i < align || i > pos + align)
 174             p[i] = random () & 255;
 175           else
 176             {
 177               p[i] = random () & 255;
 178               if (strchr ((char *) rej, p[i]))
 179                 {
 180                   p[i] = random () & 255;
 181                   if (strchr ((char *) rej, p[i]))
 182                     p[i] = c;
 183                 }
 184             }
 185         }
 186
 187       result = STRPBRK_RESULT ((char *) (p + align), pos < len ? pos : len);
 188
 189       FOR_EACH_IMPL (impl, 1)
 190         if (CALL (impl, (char *) (p + align), (char *) rej) != result)
 191           {
 192             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %p != %p",
 193                    n, impl->name, align, rej, rlen, pos, len,
 194                    (void *) CALL (impl, (char *) (p + align), (char *) rej),
 195                    (void *) result);
 196             ret = 1;
 197           }
 198     }
 199 }
 200
 201 int
 202 test_main (void)
 203 {
 204   size_t i;
 205
 206   test_init ();
 207
 208   printf ("%32s", "");
 209   FOR_EACH_IMPL (impl, 0)
 210     printf ("\t%s", impl->name);
 211   putchar ('\n');
 212
 213   for (i = 0; i < 32; ++i)
 214     {
 215       do_test (0, 512, i);
 216       do_test (i, 512, i);
 217     }
 218
 219   for (i = 1; i < 8; ++i)
 220     {
 221       do_test (0, 16 << i, 4);
 222       do_test (i, 16 << i, 4);
 223     }
 224
 225   for (i = 1; i < 8; ++i)
 226     do_test (i, 64, 10);
 227
 228   for (i = 0; i < 64; ++i)
 229     do_test (0, i, 6);
 230
 231   do_random_tests ();
 232   return ret;
 233 }
 234
 235 #include "../test-skeleton.c"