t/unit/utils/avltree_test.c

   1 /*
   2  * SysDB - t/unit/utils/avltree_test.c
   3  * Copyright (C) 2015 Sebastian 'tokkee' Harl <sh@tokkee.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  17  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  18  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
  19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "utils/avltree.h"
  29 #include "libsysdb_test.h"
  30
  31 #include <check.h>
  32
  33 static sdb_avltree_t *tree;
  34
  35 static void
  36 setup(void)
  37 {
  38         tree = sdb_avltree_create();
  39         fail_unless(tree != NULL,
  40                         "sdb_avltree_create() = NULL; expected AVL-tree object");
  41 } /* setup */
  42
  43 static void
  44 teardown(void)
  45 {
  46         sdb_avltree_destroy(tree);
  47         tree = NULL;
  48 } /* teardown */
  49
  50 /* 'a' thru 'o' */
  51 static sdb_object_t test_data[] = {
  52         SDB_OBJECT_STATIC("h"),
  53         SDB_OBJECT_STATIC("j"),
  54         SDB_OBJECT_STATIC("i"),
  55         SDB_OBJECT_STATIC("f"),
  56         SDB_OBJECT_STATIC("e"),
  57         SDB_OBJECT_STATIC("g"),
  58         SDB_OBJECT_STATIC("k"),
  59         SDB_OBJECT_STATIC("l"),
  60         SDB_OBJECT_STATIC("m"),
  61         SDB_OBJECT_STATIC("n"),
  62         SDB_OBJECT_STATIC("o"),
  63         SDB_OBJECT_STATIC("d"),
  64         SDB_OBJECT_STATIC("c"),
  65         SDB_OBJECT_STATIC("b"),
  66         SDB_OBJECT_STATIC("a"),
  67 };
  68
  69 static char *unused_names[] = { "x", "y", "z" };
  70
  71 static void
  72 populate(void)
  73 {
  74         size_t i;
  75         for (i = 0; i < SDB_STATIC_ARRAY_LEN(test_data); ++i)
  76                 sdb_avltree_insert(tree, &test_data[i]);
  77 } /* populate */
  78
  79 START_TEST(test_null)
  80 {
  81         sdb_object_t o1 = SDB_OBJECT_STATIC("obj");
  82         sdb_object_t *o2;
  83         sdb_avltree_iter_t *iter;
  84         int check;
  85
  86         /* all functions should work even when passed null values */
  87         sdb_avltree_destroy(NULL);
  88         sdb_avltree_clear(NULL);
  89
  90         check = sdb_avltree_insert(NULL, NULL);
  91         fail_unless(check < 0,
  92                         "sdb_avltree_insert(NULL, NULL) = %d; expected: <0", check);
  93         check = sdb_avltree_insert(NULL, &o1);
  94         fail_unless(check < 0,
  95                         "sdb_avltree_insert(NULL, <obj>) = %d; expected: <0", check);
  96         fail_unless(o1.ref_cnt == 1,
  97                         "sdb_avltree_insert(NULL, <obj>) incremented ref-cnt");
  98         /* it's acceptable to insert NULL */
  99
 100         iter = sdb_avltree_get_iter(NULL);
 101         fail_unless(iter == NULL,
 102                         "sdb_avltree_get_iter(NULL) = %p; expected: NULL", iter);
 103
 104         check = sdb_avltree_iter_has_next(NULL) != 0;
 105         fail_unless(check == 0,
 106                         "sdb_avltree_iter_has_next(NULL) = %d; expected: 0", check);
 107         o2 = sdb_avltree_iter_get_next(NULL);
 108         fail_unless(o2 == NULL,
 109                         "sdb_avltree_iter_get_next(NULL) = %p; expected: NULL", o2);
 110
 111         sdb_avltree_iter_destroy(NULL);
 112
 113         check = (int)sdb_avltree_size(NULL);
 114         fail_unless(check == 0,
 115                         "sdb_avltree_size(NULL) = %d; expected: 0", check);
 116 }
 117 END_TEST
 118
 119 START_TEST(test_insert)
 120 {
 121         size_t i;
 122
 123         for (i = 0; i < SDB_STATIC_ARRAY_LEN(test_data); ++i) {
 124                 int check;
 125
 126                 check = sdb_avltree_insert(tree, &test_data[i]);
 127                 fail_unless(check == 0,
 128                                 "sdb_avltree_insert(<tree>, <%s>) = %d; expected: 0",
 129                                 test_data[i].name, check);
 130
 131                 check = (int)sdb_avltree_size(tree);
 132                 fail_unless(check == (int)i + 1,
 133                                 "sdb_avltree_size(<tree>) = %d; expected: %zu",
 134                                 check, i + 1);
 135
 136                 fail_unless(sdb_avltree_valid(tree),
 137                                 "sdb_avltree_insert(<tree>, <%s>) left behind invalid tree",
 138                                 test_data[i].name);
 139         }
 140
 141         /* and again ... now reporting errors because of duplicates */
 142         for (i = 0; i < SDB_STATIC_ARRAY_LEN(test_data); ++i) {
 143                 int check;
 144
 145                 check = sdb_avltree_insert(tree, &test_data[i]);
 146                 fail_unless(check < 0,
 147                                 "sdb_avltree_insert(<tree>, <%s>) = %d (redo); expected: <0",
 148                                 test_data[i].name, check);
 149
 150                 check = (int)sdb_avltree_size(tree);
 151                 fail_unless(check == SDB_STATIC_ARRAY_LEN(test_data),
 152                                 "sdb_avltree_size(<tree>) = %d; expected: %zu",
 153                                 check, SDB_STATIC_ARRAY_LEN(test_data));
 154         }
 155 }
 156 END_TEST
 157
 158 START_TEST(test_lookup)
 159 {
 160         size_t i;
 161
 162         populate();
 163
 164         for (i = 0; i < SDB_STATIC_ARRAY_LEN(test_data); ++i) {
 165                 sdb_object_t *obj;
 166
 167                 obj = sdb_avltree_lookup(tree, test_data[i].name);
 168                 fail_unless(obj != NULL,
 169                                 "sdb_avltree_lookup(<tree>, %s) = NULL; "
 170                                 "expected: <obj>", test_data[i].name);
 171                 fail_unless(obj == &test_data[i],
 172                                 "sdb_avltree_lookup(<tree>, %s) = %p (%s); "
 173                                 "expected: %p, (%s)", test_data[i].name, obj, obj->name,
 174                                 &test_data[i], test_data[i].name);
 175         }
 176
 177         for (i = 0; i < SDB_STATIC_ARRAY_LEN(unused_names); ++i) {
 178                 sdb_object_t *obj;
 179
 180                 obj = sdb_avltree_lookup(tree, unused_names[i]);
 181                 fail_unless(obj == NULL,
 182                                 "sdb_avltree_lookup(<tree>, %s) = %p (%s); "
 183                                 "expected: NULL", unused_names[i],
 184                                 obj, obj ? obj->name : "<nil>");
 185         }
 186 }
 187 END_TEST
 188
 189 START_TEST(test_iter)
 190 {
 191         sdb_avltree_iter_t *iter;
 192         sdb_object_t *obj;
 193
 194         size_t check, i;
 195
 196         populate();
 197         check = sdb_avltree_size(tree);
 198         fail_unless(check == SDB_STATIC_ARRAY_LEN(test_data),
 199                         "INTERNAL ERROR: AVL tree size (after populate) = %zu; "
 200                         "expected: %zu", check, SDB_STATIC_ARRAY_LEN(test_data));
 201
 202         iter = sdb_avltree_get_iter(tree);
 203         fail_unless(iter != NULL,
 204                         "sdb_avltree_get_iter(<tree>) = NULL; expected: <iter>");
 205
 206         for (i = 0; i < SDB_STATIC_ARRAY_LEN(test_data); ++i) {
 207                 char expected_name[] = { (char)('a' + (int)i), '\0' };
 208
 209                 _Bool c = sdb_avltree_iter_has_next(iter);
 210                 fail_unless(c, "sdb_avltree_iter_has_next(<iter[%zu]>) = false; "
 211                                 "expected: true", i);
 212
 213                 obj = sdb_avltree_iter_get_next(iter);
 214                 fail_unless(obj != NULL,
 215                                 "sdb_avltree_iter_get_next(<iter[%zu]>) = NULL; "
 216                                 "expected: <obj>", i);
 217                 fail_unless(!strcmp(obj->name, expected_name),
 218                                 "sdb_avltree_iter[%zu] = %s; expected: %s",
 219                                 i, obj->name, expected_name);
 220         }
 221
 222         check = sdb_avltree_iter_has_next(iter) != 0;
 223         fail_unless(check == 0, "sdb_avltree_iter_has_next(<iter>) = true; "
 224                         "expected: false");
 225         obj = sdb_avltree_iter_get_next(iter);
 226         fail_unless(obj == NULL,
 227                         "sdb_avltree_iter_get_next(<iter>) = <obj>; expected: NULL");
 228
 229         sdb_avltree_iter_destroy(iter);
 230
 231         sdb_avltree_clear(tree);
 232         check = sdb_avltree_size(tree);
 233         fail_unless(check == 0,
 234                         "sdb_avltree_clear(<tree>) left %zu nodes in the tree; "
 235                         "expected: 0", check);
 236 }
 237 END_TEST
 238
 239 Suite *
 240 util_avltree_suite(void)
 241 {
 242         Suite *s = suite_create("utils::avltree");
 243         TCase *tc;
 244
 245         tc = tcase_create("core");
 246         tcase_add_checked_fixture(tc, setup, teardown);
 247         tcase_add_test(tc, test_null);
 248         tcase_add_test(tc, test_insert);
 249         tcase_add_test(tc, test_lookup);
 250         tcase_add_test(tc, test_iter);
 251         suite_add_tcase(s, tc);
 252
 253         return s;
 254 } /* util_avltree_suite */
 255
 256 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */
 257