src/test/test-list.c

   1 /***
   2   This file is part of systemd
   3
   4   Copyright 2013 Jan Janssen
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include "list.h"
  21 #include "util.h"
  22
  23 int main(int argc, const char *argv[]) {
  24         size_t i;
  25         typedef struct list_item {
  26                 LIST_FIELDS(struct list_item, item);
  27         } list_item;
  28         LIST_HEAD(list_item, head);
  29         list_item items[4];
  30         list_item *cursor;
  31
  32         LIST_HEAD_INIT(head);
  33         assert_se(head == NULL);
  34
  35         for (i = 0; i < ELEMENTSOF(items); i++) {
  36                 LIST_INIT(item, &items[i]);
  37                 assert_se(LIST_JUST_US(item, &items[i]));
  38                 LIST_PREPEND(item, head, &items[i]);
  39         }
  40
  41         i = 0;
  42         LIST_FOREACH_OTHERS(item, cursor, &items[2]) {
  43                 i++;
  44                 assert_se(cursor != &items[2]);
  45         }
  46         assert_se(i == ELEMENTSOF(items)-1);
  47
  48         i = 0;
  49         LIST_FOREACH_OTHERS(item, cursor, &items[0]) {
  50                 i++;
  51                 assert_se(cursor != &items[0]);
  52         }
  53         assert_se(i == ELEMENTSOF(items)-1);
  54
  55         i = 0;
  56         LIST_FOREACH_OTHERS(item, cursor, &items[3]) {
  57                 i++;
  58                 assert_se(cursor != &items[3]);
  59         }
  60         assert_se(i == ELEMENTSOF(items)-1);
  61
  62         assert_se(!LIST_JUST_US(item, head));
  63
  64         assert_se(items[0].item_next == NULL);
  65         assert_se(items[1].item_next == &items[0]);
  66         assert_se(items[2].item_next == &items[1]);
  67         assert_se(items[3].item_next == &items[2]);
  68
  69         assert_se(items[0].item_prev == &items[1]);
  70         assert_se(items[1].item_prev == &items[2]);
  71         assert_se(items[2].item_prev == &items[3]);
  72         assert_se(items[3].item_prev == NULL);
  73
  74         LIST_FIND_HEAD(item, &items[0], cursor);
  75         assert_se(cursor == &items[3]);
  76
  77         LIST_FIND_TAIL(item, &items[3], cursor);
  78         assert_se(cursor == &items[0]);
  79
  80         LIST_REMOVE(item, head, &items[1]);
  81         assert_se(LIST_JUST_US(item, &items[1]));
  82
  83         assert_se(items[0].item_next == NULL);
  84         assert_se(items[2].item_next == &items[0]);
  85         assert_se(items[3].item_next == &items[2]);
  86
  87         assert_se(items[0].item_prev == &items[2]);
  88         assert_se(items[2].item_prev == &items[3]);
  89         assert_se(items[3].item_prev == NULL);
  90
  91         LIST_INSERT_AFTER(item, head, &items[3], &items[1]);
  92         assert_se(items[0].item_next == NULL);
  93         assert_se(items[2].item_next == &items[0]);
  94         assert_se(items[1].item_next == &items[2]);
  95         assert_se(items[3].item_next == &items[1]);
  96
  97         assert_se(items[0].item_prev == &items[2]);
  98         assert_se(items[2].item_prev == &items[1]);
  99         assert_se(items[1].item_prev == &items[3]);
 100         assert_se(items[3].item_prev == NULL);
 101
 102         LIST_REMOVE(item, head, &items[1]);
 103         assert_se(LIST_JUST_US(item, &items[1]));
 104
 105         assert_se(items[0].item_next == NULL);
 106         assert_se(items[2].item_next == &items[0]);
 107         assert_se(items[3].item_next == &items[2]);
 108
 109         assert_se(items[0].item_prev == &items[2]);
 110         assert_se(items[2].item_prev == &items[3]);
 111         assert_se(items[3].item_prev == NULL);
 112
 113         LIST_INSERT_BEFORE(item, head, &items[2], &items[1]);
 114         assert_se(items[0].item_next == NULL);
 115         assert_se(items[2].item_next == &items[0]);
 116         assert_se(items[1].item_next == &items[2]);
 117         assert_se(items[3].item_next == &items[1]);
 118
 119         assert_se(items[0].item_prev == &items[2]);
 120         assert_se(items[2].item_prev == &items[1]);
 121         assert_se(items[1].item_prev == &items[3]);
 122         assert_se(items[3].item_prev == NULL);
 123
 124         LIST_REMOVE(item, head, &items[0]);
 125         assert_se(LIST_JUST_US(item, &items[0]));
 126
 127         assert_se(items[2].item_next == NULL);
 128         assert_se(items[1].item_next == &items[2]);
 129         assert_se(items[3].item_next == &items[1]);
 130
 131         assert_se(items[2].item_prev == &items[1]);
 132         assert_se(items[1].item_prev == &items[3]);
 133         assert_se(items[3].item_prev == NULL);
 134
 135         LIST_INSERT_BEFORE(item, head, &items[3], &items[0]);
 136         assert_se(items[2].item_next == NULL);
 137         assert_se(items[1].item_next == &items[2]);
 138         assert_se(items[3].item_next == &items[1]);
 139         assert_se(items[0].item_next == &items[3]);
 140
 141         assert_se(items[2].item_prev == &items[1]);
 142         assert_se(items[1].item_prev == &items[3]);
 143         assert_se(items[3].item_prev == &items[0]);
 144         assert_se(items[0].item_prev == NULL);
 145         assert_se(head == &items[0]);
 146
 147         LIST_REMOVE(item, head, &items[0]);
 148         assert_se(LIST_JUST_US(item, &items[0]));
 149
 150         assert_se(items[2].item_next == NULL);
 151         assert_se(items[1].item_next == &items[2]);
 152         assert_se(items[3].item_next == &items[1]);
 153
 154         assert_se(items[2].item_prev == &items[1]);
 155         assert_se(items[1].item_prev == &items[3]);
 156         assert_se(items[3].item_prev == NULL);
 157
 158         LIST_INSERT_BEFORE(item, head, NULL, &items[0]);
 159         assert_se(items[0].item_next == NULL);
 160         assert_se(items[2].item_next == &items[0]);
 161         assert_se(items[1].item_next == &items[2]);
 162         assert_se(items[3].item_next == &items[1]);
 163
 164         assert_se(items[0].item_prev == &items[2]);
 165         assert_se(items[2].item_prev == &items[1]);
 166         assert_se(items[1].item_prev == &items[3]);
 167         assert_se(items[3].item_prev == NULL);
 168
 169         LIST_REMOVE(item, head, &items[0]);
 170         assert_se(LIST_JUST_US(item, &items[0]));
 171
 172         assert_se(items[2].item_next == NULL);
 173         assert_se(items[1].item_next == &items[2]);
 174         assert_se(items[3].item_next == &items[1]);
 175
 176         assert_se(items[2].item_prev == &items[1]);
 177         assert_se(items[1].item_prev == &items[3]);
 178         assert_se(items[3].item_prev == NULL);
 179
 180         LIST_REMOVE(item, head, &items[1]);
 181         assert_se(LIST_JUST_US(item, &items[1]));
 182
 183         assert_se(items[2].item_next == NULL);
 184         assert_se(items[3].item_next == &items[2]);
 185
 186         assert_se(items[2].item_prev == &items[3]);
 187         assert_se(items[3].item_prev == NULL);
 188
 189         LIST_REMOVE(item, head, &items[2]);
 190         assert_se(LIST_JUST_US(item, &items[2]));
 191         assert_se(LIST_JUST_US(item, head));
 192
 193         LIST_REMOVE(item, head, &items[3]);
 194         assert_se(LIST_JUST_US(item, &items[3]));
 195
 196         assert_se(head == NULL);
 197
 198         for (i = 0; i < ELEMENTSOF(items); i++) {
 199                 assert_se(LIST_JUST_US(item, &items[i]));
 200                 LIST_APPEND(item, head, &items[i]);
 201         }
 202
 203         assert_se(!LIST_JUST_US(item, head));
 204
 205         assert_se(items[0].item_next == &items[1]);
 206         assert_se(items[1].item_next == &items[2]);
 207         assert_se(items[2].item_next == &items[3]);
 208         assert_se(items[3].item_next == NULL);
 209
 210         assert_se(items[0].item_prev == NULL);
 211         assert_se(items[1].item_prev == &items[0]);
 212         assert_se(items[2].item_prev == &items[1]);
 213         assert_se(items[3].item_prev == &items[2]);
 214
 215         for (i = 0; i < ELEMENTSOF(items); i++)
 216                 LIST_REMOVE(item, head, &items[i]);
 217
 218         assert_se(head == NULL);
 219
 220         return 0;
 221 }