glib/tests/sort.c

   1 /*
   2  * Copyright (C) 2011 Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <glib.h>
  19
  20 static int
  21 int_compare_data (gconstpointer p1, gconstpointer p2, gpointer data)
  22 {
  23   const gint *i1 = p1;
  24   const gint *i2 = p2;
  25
  26   return *i1 - *i2;
  27 }
  28
  29 static void
  30 test_sort_basic (void)
  31 {
  32   gint *data;
  33   gint i;
  34
  35   data = g_malloc (10000 * sizeof (int));
  36   for (i = 0; i < 10000; i++)
  37     {
  38       data[i] = g_random_int_range (0, 10000);
  39     }
  40
  41   g_qsort_with_data (data, 10000, sizeof (int), int_compare_data, NULL);
  42
  43   for (i = 1; i < 10000; i++)
  44     g_assert_cmpint (data[i -1], <=, data[i]);
  45
  46   g_free (data);
  47 }
  48
  49 typedef struct {
  50   int val;
  51   int i;
  52 } SortItem;
  53
  54 typedef struct {
  55   int val;
  56   int i;
  57   int data[16];
  58 } BigItem;
  59
  60 static int
  61 item_compare_data (gconstpointer p1, gconstpointer p2, gpointer data)
  62 {
  63   const SortItem *i1 = p1;
  64   const SortItem *i2 = p2;
  65
  66   return i1->val - i2->val;
  67 }
  68
  69 static void
  70 test_sort_stable (void)
  71 {
  72   SortItem *data;
  73   gint i;
  74
  75   data = g_malloc (10000 * sizeof (SortItem));
  76   for (i = 0; i < 10000; i++)
  77     {
  78       data[i].val = g_random_int_range (0, 10000);
  79       data[i].i = i;
  80     }
  81
  82   g_qsort_with_data (data, 10000, sizeof (SortItem), item_compare_data, NULL);
  83
  84   for (i = 1; i < 10000; i++)
  85     {
  86       g_assert_cmpint (data[i -1].val, <=, data[i].val);
  87       if (data[i -1].val == data[i].val)
  88         g_assert_cmpint (data[i -1].i, <, data[i].i);
  89     }
  90   g_free (data);
  91 }
  92
  93 static void
  94 test_sort_big (void)
  95 {
  96   BigItem *data;
  97   gint i;
  98
  99   data = g_malloc (10000 * sizeof (BigItem));
 100   for (i = 0; i < 10000; i++)
 101     {
 102       data[i].val = g_random_int_range (0, 10000);
 103       data[i].i = i;
 104     }
 105
 106   g_qsort_with_data (data, 10000, sizeof (BigItem), item_compare_data, NULL);
 107
 108   for (i = 1; i < 10000; i++)
 109     {
 110       g_assert_cmpint (data[i -1].val, <=, data[i].val);
 111       if (data[i -1].val == data[i].val)
 112         g_assert_cmpint (data[i -1].i, <, data[i].i);
 113     }
 114   g_free (data);
 115 }
 116
 117 int
 118 main (int argc, char *argv[])
 119 {
 120   g_test_init (&argc, &argv, NULL);
 121
 122   g_test_add_func ("/sort/basic", test_sort_basic);
 123   g_test_add_func ("/sort/stable", test_sort_stable);
 124   g_test_add_func ("/sort/big", test_sort_big);
 125
 126   return g_test_run ();
 127 }
 128