tests/test-array_oset.c

   1 /* Test of ordered set data type implementation.
   2    Copyright (C) 2006-2020 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2007.
   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_oset.h"
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "gl_xlist.h"
  26 #include "gl_array_list.h"
  27 #include "macros.h"
  28
  29 #include "test-oset-update.h"
  30
  31 static const char *objects[30] =
  32   {
  33     "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o",
  34     "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "<", ">", "[", "]"
  35   };
  36
  37 #define RANDOM(n) (rand () % (n))
  38 #define RANDOM_OBJECT() objects[RANDOM (SIZEOF (objects))]
  39
  40 static void
  41 check_equals (gl_oset_t set1, gl_list_t set2)
  42 {
  43   size_t n = gl_oset_size (set1);
  44   gl_oset_iterator_t iter1;
  45   gl_list_iterator_t iter2;
  46   const void *elt1;
  47   const void *elt2;
  48   gl_list_node_t node2;
  49   size_t i;
  50
  51   iter1 = gl_oset_iterator (set1);
  52   iter2 = gl_list_iterator (set2);
  53   for (i = 0; i < n; i++)
  54     {
  55       ASSERT (gl_oset_iterator_next (&iter1, &elt1));
  56       ASSERT (gl_list_iterator_next (&iter2, &elt2, &node2));
  57       ASSERT (elt1 == elt2);
  58     }
  59   ASSERT (!gl_oset_iterator_next (&iter1, &elt1));
  60   ASSERT (!gl_list_iterator_next (&iter2, &elt2, &node2));
  61   gl_oset_iterator_free (&iter1);
  62   gl_list_iterator_free (&iter2);
  63 }
  64
  65 static void
  66 check_all (gl_oset_t set1, gl_list_t set2)
  67 {
  68   check_equals (set1, set2);
  69 }
  70
  71 static bool
  72 is_at_least (const void *elt, const void *threshold)
  73 {
  74   return strcmp ((const char *) elt, (const char *) threshold) >= 0;
  75 }
  76
  77 static size_t
  78 gl_sortedlist_indexof_atleast (gl_list_t set,
  79                                gl_setelement_threshold_fn threshold_fn,
  80                                const void *threshold)
  81 {
  82   /* This implementation is slow, but easy to verify.  */
  83   size_t count = gl_list_size (set);
  84   size_t index;
  85
  86   for (index = 0; index < count; index++)
  87     if (threshold_fn (gl_list_get_at (set, index), threshold))
  88       return index;
  89   return (size_t)(-1);
  90 }
  91
  92 int
  93 main (int argc, char *argv[])
  94 {
  95   gl_oset_t set1;
  96   gl_list_t set2;
  97
  98   /* Allow the user to provide a non-default random seed on the command line.  */
  99   if (argc > 1)
 100     srand (atoi (argv[1]));
 101
 102   {
 103     size_t initial_size = RANDOM (20);
 104     size_t i;
 105     unsigned int repeat;
 106
 107     /* Create set1.  */
 108     set1 = gl_oset_nx_create_empty (GL_ARRAY_OSET, (gl_setelement_compar_fn) strcmp, NULL);
 109     ASSERT (set1 != NULL);
 110
 111     /* Create set2.  */
 112     set2 = gl_list_create_empty (GL_ARRAY_LIST, NULL, NULL, NULL, false);
 113
 114     check_all (set1, set2);
 115
 116     /* Initialize them.  */
 117     for (i = 0; i < initial_size; i++)
 118       {
 119         const char *obj = RANDOM_OBJECT ();
 120         ASSERT (gl_oset_nx_add (set1, obj)
 121                 == (gl_sortedlist_search (set2, (gl_listelement_compar_fn)strcmp, obj) != NULL
 122                     ? false
 123                     : (gl_sortedlist_add (set2, (gl_listelement_compar_fn)strcmp, obj), true)));
 124         check_all (set1, set2);
 125       }
 126
 127     for (repeat = 0; repeat < 100000; repeat++)
 128       {
 129         unsigned int operation = RANDOM (4);
 130         switch (operation)
 131           {
 132           case 0:
 133             {
 134               const char *obj = RANDOM_OBJECT ();
 135               ASSERT (gl_oset_search (set1, obj)
 136                       == (gl_sortedlist_search (set2, (gl_listelement_compar_fn)strcmp, obj) != NULL));
 137             }
 138             break;
 139           case 1:
 140             {
 141               const char *obj = RANDOM_OBJECT ();
 142               ASSERT (gl_oset_nx_add (set1, obj)
 143                       == (gl_sortedlist_search (set2, (gl_listelement_compar_fn)strcmp, obj) != NULL
 144                           ? false
 145                           : (gl_sortedlist_add (set2, (gl_listelement_compar_fn)strcmp, obj), true)));
 146             }
 147             break;
 148           case 2:
 149             {
 150               const char *obj = RANDOM_OBJECT ();
 151               ASSERT (gl_oset_remove (set1, obj)
 152                       == gl_sortedlist_remove (set2, (gl_listelement_compar_fn)strcmp, obj));
 153             }
 154             break;
 155           case 3:
 156             {
 157               const char *obj = RANDOM_OBJECT ();
 158               gl_oset_iterator_t iter = gl_oset_iterator_atleast (set1, is_at_least, obj);
 159               size_t index = gl_sortedlist_indexof_atleast (set2, is_at_least, obj);
 160               const void *elt;
 161               /* Check the first two values that the iterator produces.
 162                  Checking them all would make this part of the test dominate the
 163                  run time of the test.  */
 164               if (index == (size_t)(-1))
 165                 ASSERT (!gl_oset_iterator_next (&iter, &elt));
 166               else
 167                 {
 168                   ASSERT (gl_oset_iterator_next (&iter, &elt));
 169                   ASSERT (elt == gl_list_get_at (set2, index));
 170                   if (index + 1 == gl_list_size (set2))
 171                     ASSERT (!gl_oset_iterator_next (&iter, &elt));
 172                   else
 173                     {
 174                       ASSERT (gl_oset_iterator_next (&iter, &elt));
 175                       ASSERT (elt == gl_list_get_at (set2, index + 1));
 176                     }
 177                 }
 178               gl_oset_iterator_free (&iter);
 179             }
 180             break;
 181           }
 182         check_all (set1, set2);
 183       }
 184
 185     gl_oset_free (set1);
 186     gl_list_free (set2);
 187   }
 188
 189   test_update (GL_ARRAY_OSET);
 190
 191   return 0;
 192 }