tests/priority_queue_unit_test.cc

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2013 Free Software Foundation, Inc.
   4  *
   5  *  GRUB 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  *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <grub/test.h>
  22 #include <grub/misc.h>
  23 #include <grub/priority_queue.h>
  24
  25 #include <stdlib.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28
  29 #include <queue>
  30
  31 using namespace std;
  32
  33 static int
  34 compar (const void *a_, const void *b_)
  35 {
  36   int a = *(int *) a_;
  37   int b = *(int *) b_;
  38   if (a < b)
  39     return -1;
  40   if (a > b)
  41     return +1;
  42   return 0;
  43 }
  44
  45 static void
  46 priority_queue_test (void)
  47 {
  48   priority_queue <int> pq;
  49   grub_priority_queue_t pq2;
  50   int counter;
  51   int s = 0;
  52   pq2 = grub_priority_queue_new (sizeof (int), compar);
  53   if (!pq2)
  54     {
  55       grub_test_assert (0,
  56                         "priority queue: queue creating failed\n");
  57       return;
  58     }
  59   srand (1);
  60
  61   for (counter = 0; counter < 1000000; counter++)
  62     {
  63       int op = rand () % 10;
  64       if (s && *(int *) grub_priority_queue_top (pq2) != pq.top ())
  65         {
  66           printf ("Error at %d\n", counter);
  67           grub_test_assert (0,
  68                             "priority queue: error at %d\n", counter);
  69           return;
  70         }
  71       if (op < 3 && s)
  72         {
  73           grub_priority_queue_pop (pq2);
  74           pq.pop ();
  75           s--;
  76         }
  77       else
  78         {
  79           int v = rand ();
  80           pq.push (v);
  81           if (grub_priority_queue_push (pq2, &v) != 0)
  82             {
  83               grub_test_assert (0,
  84                                 "priority queue: push failed");
  85               return;
  86             }
  87           s++;
  88         }
  89     }
  90   while (s)
  91     {
  92       if (*(int *) grub_priority_queue_top (pq2) != pq.top ())
  93         {
  94           grub_test_assert (0,
  95                             "priority queue: Error at the end. %d elements remaining.\n", s);
  96           return;
  97         }
  98       grub_priority_queue_pop (pq2);
  99       pq.pop ();
 100       s--;
 101     }
 102   printf ("priority_queue: passed successfully\n");
 103 }
 104
 105 GRUB_UNIT_TEST ("priority_queue_unit_test", priority_queue_test);