1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* fstree_sort.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "fstree.h"
#include "internal.h"
#include "../test.h"
int main(int argc, char **argv)
{
tree_node_t *a, *b, *c, *d;
struct stat sb;
fstree_t fs;
int ret;
(void)argc; (void)argv;
memset(&fs, 0, sizeof(fs));
memset(&sb, 0, sizeof(sb));
sb.st_mode = S_IFBLK | 0600;
sb.st_rdev = 1337;
a = fstree_mknode(NULL, "a", 1, NULL, &sb);
b = fstree_mknode(NULL, "b", 1, NULL, &sb);
c = fstree_mknode(NULL, "c", 1, NULL, &sb);
d = fstree_mknode(NULL, "d", 1, NULL, &sb);
TEST_ASSERT(a != NULL && b != NULL && c != NULL && d != NULL);
/* empty list */
TEST_NULL(tree_node_list_sort(NULL));
/* single element */
TEST_ASSERT(tree_node_list_sort(a) == a);
TEST_NULL(a->next);
/* two elements, reverse order */
b->next = a;
TEST_ASSERT(tree_node_list_sort(b) == a);
TEST_ASSERT(a->next == b);
TEST_NULL(b->next);
/* two elements, sorted order */
TEST_ASSERT(tree_node_list_sort(a) == a);
TEST_ASSERT(a->next == b);
TEST_NULL(b->next);
/* three elements, reverse order */
c->next = b;
b->next = a;
a->next = NULL;
TEST_ASSERT(tree_node_list_sort(c) == a);
TEST_ASSERT(a->next == b);
TEST_ASSERT(b->next == c);
TEST_NULL(c->next);
/* three elements, ordered */
TEST_ASSERT(tree_node_list_sort(a) == a);
TEST_ASSERT(a->next == b);
TEST_ASSERT(b->next == c);
TEST_NULL(c->next);
/* four elements, reverse order */
d->next = c;
c->next = b;
b->next = a;
a->next = NULL;
TEST_ASSERT(tree_node_list_sort(d) == a);
TEST_ASSERT(a->next == b);
TEST_ASSERT(b->next == c);
TEST_ASSERT(c->next == d);
TEST_NULL(d->next);
/* four elements, sorted order */
TEST_ASSERT(tree_node_list_sort(a) == a);
TEST_ASSERT(a->next == b);
TEST_ASSERT(b->next == c);
TEST_ASSERT(c->next == d);
TEST_NULL(d->next);
/* force merge sort to go through LRLR pattern */
b->next = a;
a->next = d;
d->next = c;
c->next = NULL;
TEST_ASSERT(tree_node_list_sort(b) == a);
TEST_ASSERT(a->next == b);
TEST_ASSERT(b->next == c);
TEST_ASSERT(c->next == d);
TEST_NULL(d->next);
/* cleanup and done */
free(a);
free(b);
free(c);
free(d);
return EXIT_SUCCESS;
}
|
