string/test-strspn.c

   1 /* Test and measure strspn functions.
   2    Copyright (C) 1999-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #define TEST_MAIN
  20 #ifndef WIDE
  21 # define TEST_NAME "strspn"
  22 #else
  23 # define TEST_NAME "wcsspn"
  24 #endif /* WIDE */
  25 #include "test-string.h"
  26
  27 #ifndef WIDE
  28 # define STRSPN strspn
  29 # define CHAR char
  30 # define UCHAR unsigned char
  31 # define SIMPLE_STRSPN simple_strspn
  32 # define STUPID_STRSPN stupid_strspn
  33 # define STRLEN strlen
  34 # define STRCHR strchr
  35 # define BIG_CHAR CHAR_MAX
  36 # define SMALL_CHAR 127
  37 #else
  38 # include <wchar.h>
  39 # define STRSPN wcsspn
  40 # define CHAR wchar_t
  41 # define UCHAR wchar_t
  42 # define SIMPLE_STRSPN simple_wcsspn
  43 # define STUPID_STRSPN stupid_wcsspn
  44 # define STRLEN wcslen
  45 # define STRCHR wcschr
  46 # define BIG_CHAR WCHAR_MAX
  47 # define SMALL_CHAR 1273
  48 #endif /* WIDE */
  49
  50 typedef size_t (*proto_t) (const CHAR *, const CHAR *);
  51 size_t SIMPLE_STRSPN (const CHAR *, const CHAR *);
  52 size_t STUPID_STRSPN (const CHAR *, const CHAR *);
  53
  54 IMPL (STUPID_STRSPN, 0)
  55 IMPL (SIMPLE_STRSPN, 0)
  56 IMPL (STRSPN, 1)
  57
  58 size_t
  59 SIMPLE_STRSPN (const CHAR *s, const CHAR *acc)
  60 {
  61   const CHAR *r, *str = s;
  62   CHAR c;
  63
  64   while ((c = *s++) != '\0')
  65     {
  66       for (r = acc; *r != '\0'; ++r)
  67         if (*r == c)
  68           break;
  69       if (*r == '\0')
  70         return s - str - 1;
  71     }
  72   return s - str - 1;
  73 }
  74
  75 size_t
  76 STUPID_STRSPN (const CHAR *s, const CHAR *acc)
  77 {
  78   size_t ns = STRLEN (s), nacc = STRLEN (acc);
  79   size_t i, j;
  80
  81   for (i = 0; i < ns; ++i)
  82     {
  83       for (j = 0; j < nacc; ++j)
  84         if (s[i] == acc[j])
  85           break;
  86       if (j == nacc)
  87         return i;
  88     }
  89   return i;
  90 }
  91
  92 static void
  93 do_one_test (impl_t *impl, const CHAR *s, const CHAR *acc, size_t exp_res)
  94 {
  95   size_t res = CALL (impl, s, acc);
  96   if (res != exp_res)
  97     {
  98       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  99              (void *) res, (void *) exp_res);
 100       ret = 1;
 101       return;
 102     }
 103 }
 104
 105 static void
 106 do_test (size_t align, size_t pos, size_t len)
 107 {
 108   size_t i;
 109   CHAR *acc, *s;
 110
 111   align &= 7;
 112   if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240 || ! len)
 113     return;
 114
 115   acc = (CHAR *) (buf2) + (random () & 255);
 116   s = (CHAR *) (buf1) + align;
 117
 118   for (i = 0; i < len; ++i)
 119     {
 120       acc[i] = random () & BIG_CHAR;
 121       if (!acc[i])
 122         acc[i] = random () & BIG_CHAR;
 123       if (!acc[i])
 124         acc[i] = 1 + (random () & SMALL_CHAR);
 125     }
 126   acc[len] = '\0';
 127
 128   for (i = 0; i < pos; ++i)
 129     s[i] = acc[random () % len];
 130   s[pos] = random () & BIG_CHAR;
 131   if (STRCHR (acc, s[pos]))
 132     s[pos] = '\0';
 133   else
 134     {
 135       for (i = pos + 1; i < pos + 10; ++i)
 136         s[i] = random () & BIG_CHAR;
 137       s[i] = '\0';
 138     }
 139
 140   FOR_EACH_IMPL (impl, 0)
 141     do_one_test (impl, s, acc, pos);
 142 }
 143
 144 static void
 145 do_random_tests (void)
 146 {
 147   size_t i, j, n, align, pos, alen, len;
 148   UCHAR *p = (UCHAR *) (buf1 + page_size) - 512;
 149   UCHAR *acc;
 150
 151   for (n = 0; n < ITERATIONS; n++)
 152     {
 153       align = random () & 15;
 154       if (random () & 1)
 155         alen = random () & 63;
 156       else
 157         alen = random () & 15;
 158       if (!alen)
 159         pos = 0;
 160       else
 161         pos = random () & 511;
 162       if (pos + align >= 511)
 163         pos = 510 - align - (random () & 7);
 164       len = random () & 511;
 165       if (len + align >= 512)
 166         len = 511 - align - (random () & 7);
 167       acc = (UCHAR *) (buf2 + page_size) - alen - 1 - (random () & 7);
 168       for (i = 0; i < alen; ++i)
 169         {
 170           acc[i] = random () & BIG_CHAR;
 171           if (!acc[i])
 172             acc[i] = random () & BIG_CHAR;
 173           if (!acc[i])
 174             acc[i] = 1 + (random () & SMALL_CHAR);
 175         }
 176       acc[i] = '\0';
 177       j = (pos > len ? pos : len) + align + 64;
 178       if (j > 512)
 179         j = 512;
 180
 181       for (i = 0; i < j; i++)
 182         {
 183           if (i == len + align)
 184             p[i] = '\0';
 185           else if (i == pos + align)
 186             {
 187               p[i] = random () & BIG_CHAR;
 188               if (STRCHR ((CHAR *) acc, p[i]))
 189                 p[i] = '\0';
 190             }
 191           else if (i < align || i > pos + align)
 192             p[i] = random () & BIG_CHAR;
 193           else
 194             p[i] = acc [random () % alen];
 195         }
 196
 197       FOR_EACH_IMPL (impl, 1)
 198         if (CALL (impl, (CHAR *) (p + align),
 199                   (CHAR *) acc) != (pos < len ? pos : len))
 200           {
 201             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %zd != %zd",
 202                    n, impl->name, align, acc, alen, pos, len,
 203                    CALL (impl, (CHAR *) (p + align), (CHAR *) acc),
 204                    (pos < len ? pos : len));
 205             ret = 1;
 206           }
 207     }
 208 }
 209
 210 int
 211 test_main (void)
 212 {
 213   size_t i;
 214
 215   test_init ();
 216
 217   printf ("%32s", "");
 218   FOR_EACH_IMPL (impl, 0)
 219     printf ("\t%s", impl->name);
 220   putchar ('\n');
 221
 222   for (i = 0; i < 32; ++i)
 223     {
 224       do_test (0, 512, i);
 225       do_test (i, 512, i);
 226     }
 227
 228   for (i = 1; i < 8; ++i)
 229     {
 230       do_test (0, 16 << i, 4);
 231       do_test (i, 16 << i, 4);
 232     }
 233
 234   for (i = 1; i < 8; ++i)
 235     do_test (i, 64, 10);
 236
 237   for (i = 0; i < 64; ++i)
 238     do_test (0, i, 6);
 239
 240   do_random_tests ();
 241   return ret;
 242 }
 243
 244 #include <support/test-driver.c>