tests/test-array_map.c

   1 /* Test of map data type implementation.
   2    Copyright (C) 2006-2020 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2018.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 #include "gl_array_map.h"
  21
  22 #include <limits.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "gl_xlist.h"
  27 #include "gl_array_list.h"
  28 #include "macros.h"
  29
  30 static const char *objects[30] =
  31   {
  32     "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o",
  33     "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "<", ">", "[", "]"
  34   };
  35
  36 #define SIZE_BITS (sizeof (size_t) * CHAR_BIT)
  37
  38 static bool
  39 string_equals (const void *x1, const void *x2)
  40 {
  41   const char *s1 = x1;
  42   const char *s2 = x2;
  43   return strcmp (s1, s2) == 0;
  44 }
  45
  46 /* A hash function for NUL-terminated char* strings using
  47    the method described by Bruno Haible.
  48    See https://www.haible.de/bruno/hashfunc.html.  */
  49 static size_t
  50 string_hash (const void *x)
  51 {
  52   const char *s = x;
  53   size_t h = 0;
  54
  55   for (; *s; s++)
  56     h = *s + ((h << 9) | (h >> (SIZE_BITS - 9)));
  57
  58   return h;
  59 }
  60
  61 #define RANDOM(n) (rand () % (n))
  62 #define RANDOM_OBJECT() objects[RANDOM (SIZEOF (objects))]
  63
  64 struct pair
  65 {
  66   const void *key;
  67   const void *value;
  68 };
  69
  70 static int
  71 cmp_pairs_in_array (const void *pairptr1, const void *pairptr2)
  72 {
  73   const void *key1 = ((struct pair const *)pairptr1)->key;
  74   const void *key2 = ((struct pair const *)pairptr2)->key;
  75   return strcmp ((const char *) key1, (const char *) key2);
  76 }
  77
  78 static void
  79 check_equals (gl_map_t map1, gl_list_t keys, gl_list_t values)
  80 {
  81   size_t n = gl_map_size (map1);
  82   struct pair *pairs_of_map1 = XNMALLOC (n, struct pair);
  83
  84   gl_map_iterator_t iter1;
  85   const void *key1;
  86   const void *value1;
  87   size_t i;
  88
  89   ASSERT (gl_list_size (keys) == n);
  90   ASSERT (gl_list_size (values) == n);
  91   iter1 = gl_map_iterator (map1);
  92   for (i = 0; i < n; i++)
  93     {
  94       ASSERT (gl_map_iterator_next (&iter1, &key1, &value1));
  95       pairs_of_map1[i].key = key1;
  96       pairs_of_map1[i].value = value1;
  97     }
  98   ASSERT (!gl_map_iterator_next (&iter1, &key1, &value1));
  99   gl_map_iterator_free (&iter1);
 100
 101   if (n > 0)
 102     qsort (pairs_of_map1, n, sizeof (struct pair), cmp_pairs_in_array);
 103   for (i = 0; i < n; i++)
 104     {
 105       ASSERT (pairs_of_map1[i].key == gl_list_get_at (keys, i));
 106       ASSERT (pairs_of_map1[i].value == gl_list_get_at (values, i));
 107     }
 108   free (pairs_of_map1);
 109 }
 110
 111 static void
 112 check_all (gl_map_t map1, gl_list_t keys, gl_list_t values)
 113 {
 114   check_equals (map1, keys, values);
 115 }
 116
 117 int
 118 main (int argc, char *argv[])
 119 {
 120   gl_map_t map1;
 121   gl_list_t keys;
 122   gl_list_t values;
 123
 124   /* Allow the user to provide a non-default random seed on the command line.  */
 125   if (argc > 1)
 126     srand (atoi (argv[1]));
 127
 128   {
 129     size_t initial_size = RANDOM (20);
 130     size_t i;
 131     unsigned int repeat;
 132
 133     /* Create map1.  */
 134     map1 = gl_map_nx_create_empty (GL_ARRAY_MAP,
 135                                    string_equals, string_hash, NULL, NULL);
 136     ASSERT (map1 != NULL);
 137
 138     /* Create keys and values.  */
 139     keys = gl_list_create_empty (GL_ARRAY_LIST, NULL, NULL, NULL, false);
 140     values = gl_list_create_empty (GL_ARRAY_LIST, NULL, NULL, NULL, false);
 141
 142     check_all (map1, keys, values);
 143
 144     /* Initialize them.  */
 145     for (i = 0; i < initial_size; i++)
 146       {
 147         const char *key = RANDOM_OBJECT ();
 148         const char *value = RANDOM_OBJECT ();
 149         bool added = gl_map_nx_put (map1, key, value);
 150         size_t index = gl_sortedlist_indexof (keys, (gl_listelement_compar_fn)strcmp, key);
 151         ASSERT (added == (index == (size_t)(-1)));
 152         if (added)
 153           {
 154             gl_sortedlist_add (keys, (gl_listelement_compar_fn)strcmp, key);
 155             index = gl_sortedlist_indexof (keys, (gl_listelement_compar_fn)strcmp, key);
 156             gl_list_add_at (values, index, value);
 157           }
 158         else
 159           gl_list_set_at (values, index, value);
 160         check_all (map1, keys, values);
 161       }
 162
 163     for (repeat = 0; repeat < 100000; repeat++)
 164       {
 165         unsigned int operation = RANDOM (3);
 166         switch (operation)
 167           {
 168           case 0:
 169             {
 170               const char *key = RANDOM_OBJECT ();
 171               const void *ret = gl_map_get (map1, key);
 172               size_t index =
 173                 gl_sortedlist_indexof (keys, (gl_listelement_compar_fn)strcmp, key);
 174               ASSERT (ret
 175                       == (index != (size_t)(-1) ? gl_list_get_at (values, index) : NULL));
 176             }
 177             break;
 178           case 1:
 179             {
 180               const char *key = RANDOM_OBJECT ();
 181               const char *value = RANDOM_OBJECT ();
 182               bool added = gl_map_nx_put (map1, key, value);
 183               size_t index =
 184                 gl_sortedlist_indexof (keys, (gl_listelement_compar_fn)strcmp, key);
 185               ASSERT (added == (index == (size_t)(-1)));
 186               if (added)
 187                 {
 188                   gl_sortedlist_add (keys, (gl_listelement_compar_fn)strcmp, key);
 189                   index = gl_sortedlist_indexof (keys, (gl_listelement_compar_fn)strcmp, key);
 190                   gl_list_add_at (values, index, value);
 191                 }
 192               else
 193                 gl_list_set_at (values, index, value);
 194             }
 195             break;
 196           case 2:
 197             {
 198               const char *key = RANDOM_OBJECT ();
 199               bool removed = gl_map_remove (map1, key);
 200               size_t index =
 201                 gl_sortedlist_indexof (keys, (gl_listelement_compar_fn)strcmp, key);
 202               ASSERT (removed == (index != (size_t)(-1)));
 203               if (removed)
 204                 {
 205                   gl_list_remove_at (keys, index);
 206                   gl_list_remove_at (values, index);
 207                 }
 208             }
 209             break;
 210           }
 211         check_all (map1, keys, values);
 212       }
 213
 214     gl_map_free (map1);
 215     gl_list_free (keys);
 216     gl_list_free (values);
 217   }
 218
 219   return 0;
 220 }