string/test-strspn.c

   1 /* Test and measure strspn 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 #define TEST_MAIN
  21 #define TEST_NAME "strspn"
  22 #include "test-string.h"
  23
  24 typedef size_t (*proto_t) (const char *, const char *);
  25 size_t simple_strspn (const char *, const char *);
  26 size_t stupid_strspn (const char *, const char *);
  27
  28 IMPL (stupid_strspn, 0)
  29 IMPL (simple_strspn, 0)
  30 IMPL (strspn, 1)
  31
  32 size_t
  33 simple_strspn (const char *s, const char *acc)
  34 {
  35   const char *r, *str = s;
  36   char c;
  37
  38   while ((c = *s++) != '\0')
  39     {
  40       for (r = acc; *r != '\0'; ++r)
  41         if (*r == c)
  42           break;
  43       if (*r == '\0')
  44         return s - str - 1;
  45     }
  46   return s - str - 1;
  47 }
  48
  49 size_t
  50 stupid_strspn (const char *s, const char *acc)
  51 {
  52   size_t ns = strlen (s), nacc = strlen (acc);
  53   size_t i, j;
  54
  55   for (i = 0; i < ns; ++i)
  56     {
  57       for (j = 0; j < nacc; ++j)
  58         if (s[i] == acc[j])
  59           break;
  60       if (j == nacc)
  61         return i;
  62     }
  63   return i;
  64 }
  65
  66 static void
  67 do_one_test (impl_t *impl, const char *s, const char *acc, size_t exp_res)
  68 {
  69   size_t res = CALL (impl, s, acc);
  70   if (res != exp_res)
  71     {
  72       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  73              (void *) res, (void *) exp_res);
  74       ret = 1;
  75       return;
  76     }
  77 }
  78
  79 static void
  80 do_test (size_t align, size_t pos, size_t len)
  81 {
  82   size_t i;
  83   char *acc, *s;
  84
  85   align &= 7;
  86   if (align + pos + 10 >= page_size || len > 240 || ! len)
  87     return;
  88
  89   acc = (char *) (buf2 + (random () & 255));
  90   s = (char *) (buf1 + align);
  91
  92   for (i = 0; i < len; ++i)
  93     {
  94       acc[i] = random () & 255;
  95       if (!acc[i])
  96         acc[i] = random () & 255;
  97       if (!acc[i])
  98         acc[i] = 1 + (random () & 127);
  99     }
 100   acc[len] = '\0';
 101
 102   for (i = 0; i < pos; ++i)
 103     s[i] = acc[random () % len];
 104   s[pos] = random () & 255;
 105   if (strchr (acc, s[pos]))
 106     s[pos] = '\0';
 107   else
 108     {
 109       for (i = pos + 1; i < pos + 10; ++i)
 110         s[i] = random () & 255;
 111       s[i] = '\0';
 112     }
 113
 114   FOR_EACH_IMPL (impl, 0)
 115     do_one_test (impl, s, acc, pos);
 116 }
 117
 118 static void
 119 do_random_tests (void)
 120 {
 121   size_t i, j, n, align, pos, alen, len;
 122   unsigned char *p = buf1 + page_size - 512;
 123   unsigned char *acc;
 124
 125   for (n = 0; n < ITERATIONS; n++)
 126     {
 127       align = random () & 15;
 128       if (random () & 1)
 129         alen = random () & 63;
 130       else
 131         alen = random () & 15;
 132       if (!alen)
 133         pos = 0;
 134       else
 135         pos = random () & 511;
 136       if (pos + align >= 511)
 137         pos = 510 - align - (random () & 7);
 138       len = random () & 511;
 139       if (len + align >= 512)
 140         len = 511 - align - (random () & 7);
 141       acc = buf2 + page_size - alen - 1 - (random () & 7);
 142       for (i = 0; i < alen; ++i)
 143         {
 144           acc[i] = random () & 255;
 145           if (!acc[i])
 146             acc[i] = random () & 255;
 147           if (!acc[i])
 148             acc[i] = 1 + (random () & 127);
 149         }
 150       acc[i] = '\0';
 151       j = (pos > len ? pos : len) + align + 64;
 152       if (j > 512)
 153         j = 512;
 154
 155       for (i = 0; i < j; i++)
 156         {
 157           if (i == len + align)
 158             p[i] = '\0';
 159           else if (i == pos + align)
 160             {
 161               p[i] = random () & 255;
 162               if (strchr ((char *) acc, p[i]))
 163                 p[i] = '\0';
 164             }
 165           else if (i < align || i > pos + align)
 166             p[i] = random () & 255;
 167           else
 168             p[i] = acc [random () % alen];
 169         }
 170
 171       FOR_EACH_IMPL (impl, 1)
 172         if (CALL (impl, (char *) (p + align),
 173                   (char *) acc) != (pos < len ? pos : len))
 174           {
 175             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %zd != %zd",
 176                    n, impl->name, align, acc, alen, pos, len,
 177                    CALL (impl, (char *) (p + align), (char *) acc),
 178                    (pos < len ? pos : len));
 179             ret = 1;
 180           }
 181     }
 182 }
 183
 184 int
 185 test_main (void)
 186 {
 187   size_t i;
 188
 189   test_init ();
 190
 191   printf ("%32s", "");
 192   FOR_EACH_IMPL (impl, 0)
 193     printf ("\t%s", impl->name);
 194   putchar ('\n');
 195
 196   for (i = 0; i < 32; ++i)
 197     {
 198       do_test (0, 512, i);
 199       do_test (i, 512, i);
 200     }
 201
 202   for (i = 1; i < 8; ++i)
 203     {
 204       do_test (0, 16 << i, 4);
 205       do_test (i, 16 << i, 4);
 206     }
 207
 208   for (i = 1; i < 8; ++i)
 209     do_test (i, 64, 10);
 210
 211   for (i = 0; i < 64; ++i)
 212     do_test (0, i, 6);
 213
 214   do_random_tests ();
 215   return ret;
 216 }
 217
 218 #include "../test-skeleton.c"