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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/* Unit test for ldconfig string tables.
Copyright (C) 2020-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <https://www.gnu.org/licenses/>. */
#include <array_length.h>
#include <stdlib.h>
#include <string.h>
#include <stringtable.h>
#include <support/check.h>
#include <support/support.h>
static int
do_test (void)
{
/* Empty string table. */
{
struct stringtable s = { 0, };
struct stringtable_finalized f;
stringtable_finalize (&s, &f);
TEST_COMPARE_STRING (f.strings, "");
TEST_COMPARE (f.size, 0);
free (f.strings);
stringtable_free (&s);
}
/* String table with one empty string. */
{
struct stringtable s = { 0, };
struct stringtable_entry *e = stringtable_add (&s, "");
TEST_COMPARE_STRING (e->string, "");
TEST_COMPARE (e->length, 0);
TEST_COMPARE (s.count, 1);
struct stringtable_finalized f;
stringtable_finalize (&s, &f);
TEST_COMPARE (e->offset, 0);
TEST_COMPARE_STRING (f.strings, "");
TEST_COMPARE (f.size, 1);
free (f.strings);
stringtable_free (&s);
}
/* String table with one non-empty string. */
{
struct stringtable s = { 0, };
struct stringtable_entry *e = stringtable_add (&s, "name");
TEST_COMPARE_STRING (e->string, "name");
TEST_COMPARE (e->length, 4);
TEST_COMPARE (s.count, 1);
struct stringtable_finalized f;
stringtable_finalize (&s, &f);
TEST_COMPARE (e->offset, 0);
TEST_COMPARE_STRING (f.strings, "name");
TEST_COMPARE (f.size, 5);
free (f.strings);
stringtable_free (&s);
}
/* Two strings, one is a prefix of the other. Tail-merging can only
happen in one way in this case. */
{
struct stringtable s = { 0, };
struct stringtable_entry *suffix = stringtable_add (&s, "suffix");
TEST_COMPARE_STRING (suffix->string, "suffix");
TEST_COMPARE (suffix->length, 6);
TEST_COMPARE (s.count, 1);
struct stringtable_entry *prefix
= stringtable_add (&s, "prefix-suffix");
TEST_COMPARE_STRING (prefix->string, "prefix-suffix");
TEST_COMPARE (prefix->length, strlen ("prefix-suffix"));
TEST_COMPARE (s.count, 2);
struct stringtable_finalized f;
stringtable_finalize (&s, &f);
TEST_COMPARE (prefix->offset, 0);
TEST_COMPARE (suffix->offset, strlen ("prefix-"));
TEST_COMPARE_STRING (f.strings, "prefix-suffix");
TEST_COMPARE (f.size, sizeof ("prefix-suffix"));
free (f.strings);
stringtable_free (&s);
}
/* String table with various shared prefixes. Triggers hash
resizing. */
{
enum { count = 1500 };
char *strings[2 * count];
struct stringtable_entry *entries[2 * count];
struct stringtable s = { 0, };
for (int i = 0; i < count; ++i)
{
strings[i] = xasprintf ("%d", i);
entries[i] = stringtable_add (&s, strings[i]);
TEST_COMPARE (entries[i]->length, strlen (strings[i]));
TEST_COMPARE_STRING (entries[i]->string, strings[i]);
strings[i + count] = xasprintf ("prefix/%d", i);
entries[i + count] = stringtable_add (&s, strings[i + count]);
TEST_COMPARE (entries[i + count]->length, strlen (strings[i + count]));
TEST_COMPARE_STRING (entries[i + count]->string, strings[i + count]);
}
struct stringtable_finalized f;
stringtable_finalize (&s, &f);
for (int i = 0; i < 2 * count; ++i)
{
TEST_COMPARE (entries[i]->length, strlen (strings[i]));
TEST_COMPARE_STRING (entries[i]->string, strings[i]);
TEST_COMPARE_STRING (f.strings + entries[i]->offset, strings[i]);
free (strings[i]);
}
free (f.strings);
stringtable_free (&s);
}
/* Verify that maximum tail merging happens. */
{
struct stringtable s = { 0, };
const char *strings[] = {
"",
"a",
"b",
"aa",
"aaa",
"aa",
"bb",
"b",
"a",
"ba",
"baa",
};
struct stringtable_entry *entries[array_length (strings)];
for (int i = 0; i < array_length (strings); ++i)
entries[i] = stringtable_add (&s, strings[i]);
for (int i = 0; i < array_length (strings); ++i)
TEST_COMPARE_STRING (entries[i]->string, strings[i]);
struct stringtable_finalized f;
stringtable_finalize (&s, &f);
/* There are only four different strings, "aaa", "ba", "baa",
"bb". The rest is shared in an unspecified fashion. */
TEST_COMPARE (f.size, 4 + 3 + 4 + 3);
for (int i = 0; i < array_length (strings); ++i)
{
TEST_COMPARE_STRING (entries[i]->string, strings[i]);
TEST_COMPARE_STRING (f.strings + entries[i]->offset, strings[i]);
}
free (f.strings);
stringtable_free (&s);
}
return 0;
}
#include <support/test-driver.c>
/* Re-compile the string table implementation here. It is not
possible to link against the actual build because it was built for
use in ldconfig. */
#define _(arg) arg
#include "stringtable.c"
#include "stringtable_free.c"
|
