tests/test-rbtree_oset.c

   1 /* Test of ordered set data type implementation.
   2    Copyright (C) 2006-2019 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2006.
   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_rbtree_oset.h"
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "gl_array_oset.h"
  26 #include "macros.h"
  27
  28 extern void gl_rbtree_oset_check_invariants (gl_oset_t set);
  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 RANDOM(n) (rand () % (n))
  37 #define RANDOM_OBJECT() objects[RANDOM (SIZEOF (objects))]
  38
  39 static void
  40 check_equals (gl_oset_t set1, gl_oset_t set2)
  41 {
  42   size_t n = gl_oset_size (set1);
  43   gl_oset_iterator_t iter1, iter2;
  44   const void *elt1;
  45   const void *elt2;
  46   size_t i;
  47
  48   iter1 = gl_oset_iterator (set1);
  49   iter2 = gl_oset_iterator (set2);
  50   for (i = 0; i < n; i++)
  51     {
  52       ASSERT (gl_oset_iterator_next (&iter1, &elt1));
  53       ASSERT (gl_oset_iterator_next (&iter2, &elt2));
  54       ASSERT (elt1 == elt2);
  55     }
  56   ASSERT (!gl_oset_iterator_next (&iter1, &elt1));
  57   ASSERT (!gl_oset_iterator_next (&iter2, &elt2));
  58   gl_oset_iterator_free (&iter1);
  59   gl_oset_iterator_free (&iter2);
  60 }
  61
  62 static void
  63 check_all (gl_oset_t set1, gl_oset_t set2)
  64 {
  65   gl_rbtree_oset_check_invariants (set2);
  66   check_equals (set1, set2);
  67 }
  68
  69 int
  70 main (int argc, char *argv[])
  71 {
  72   gl_oset_t set1, set2;
  73
  74   /* Allow the user to provide a non-default random seed on the command line.  */
  75   if (argc > 1)
  76     srand (atoi (argv[1]));
  77
  78   {
  79     size_t initial_size = RANDOM (20);
  80     size_t i;
  81     unsigned int repeat;
  82
  83     /* Create set1.  */
  84     set1 = gl_oset_nx_create_empty (GL_ARRAY_OSET, (gl_setelement_compar_fn) strcmp, NULL);
  85     ASSERT (set1 != NULL);
  86
  87     /* Create set2.  */
  88     set2 = gl_oset_nx_create_empty (GL_RBTREE_OSET, (gl_setelement_compar_fn) strcmp, NULL);
  89     ASSERT (set2 != NULL);
  90
  91     check_all (set1, set2);
  92
  93     /* Initialize them.  */
  94     for (i = 0; i < initial_size; i++)
  95       {
  96         const char *obj = RANDOM_OBJECT ();
  97         ASSERT (gl_oset_nx_add (set1, obj) == gl_oset_nx_add (set2, obj));
  98         check_all (set1, set2);
  99       }
 100
 101     for (repeat = 0; repeat < 100000; repeat++)
 102       {
 103         unsigned int operation = RANDOM (3);
 104         switch (operation)
 105           {
 106           case 0:
 107             {
 108               const char *obj = RANDOM_OBJECT ();
 109               ASSERT (gl_oset_search (set1, obj) == gl_oset_search (set2, obj));
 110             }
 111             break;
 112           case 1:
 113             {
 114               const char *obj = RANDOM_OBJECT ();
 115               ASSERT (gl_oset_nx_add (set1, obj) == gl_oset_nx_add (set2, obj));
 116             }
 117             break;
 118           case 2:
 119             {
 120               const char *obj = RANDOM_OBJECT ();
 121               ASSERT (gl_oset_remove (set1, obj) == gl_oset_remove (set2, obj));
 122             }
 123             break;
 124           }
 125         check_all (set1, set2);
 126       }
 127
 128     gl_oset_free (set1);
 129     gl_oset_free (set2);
 130   }
 131
 132   return 0;
 133 }