1 /* Test the wcslcat function.
2 Copyright (C) 2023-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #include <array_length.h>
22 #include <support/check.h>
33 /* Nothing is written to the destination if its size is 0. */
34 wmemset (s
.buf1
, '@', array_length (s
.buf1
));
35 wmemset (s
.buf2
, '@', array_length (s
.buf2
));
36 TEST_COMPARE (wcslcat (s
.buf1
, L
"", 0), 0);
37 TEST_COMPARE_BLOB (&s
, sizeof (s
), L
"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
38 TEST_COMPARE (wcslcat (s
.buf1
, L
"Hello!", 0), 6);
39 TEST_COMPARE_BLOB (&s
, sizeof (s
), L
"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
41 /* No bytes are are modified in the target buffer if the source
42 string is short enough. */
43 wmemset (s
.buf1
, '@', array_length (s
.buf1
));
44 wmemset (s
.buf2
, '@', array_length (s
.buf2
));
45 wcscpy (s
.buf1
, L
"He");
46 TEST_COMPARE (wcslcat (s
.buf1
, L
"llo!", array_length (s
.buf1
)), 6);
47 TEST_COMPARE_BLOB (&s
, sizeof (s
), L
"Hello!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
49 /* A source string which fits exactly into the destination buffer is
51 wmemset (s
.buf1
, '@', array_length (s
.buf1
));
52 wmemset (s
.buf2
, '@', array_length (s
.buf2
));
53 wcscpy (s
.buf1
, L
"H");
54 TEST_COMPARE (wcslcat (s
.buf1
, L
"ello, world!!!", array_length (s
.buf1
)),
56 TEST_COMPARE_BLOB (&s
, sizeof (s
),
57 L
"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
59 /* A source string one character longer than the destination buffer
60 is truncated by one character. The total length is returned. */
61 wmemset (s
.buf1
, '@', array_length (s
.buf1
));
62 wmemset (s
.buf2
, '@', array_length (s
.buf2
));
63 wcscpy (s
.buf1
, L
"Hello");
64 TEST_COMPARE (wcslcat (s
.buf1
, L
", world!!!!", array_length (s
.buf1
)), 16);
65 TEST_COMPARE_BLOB (&s
, sizeof (s
),
66 L
"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
68 /* An even longer source string is truncated as well, and the total
69 length is returned. */
70 wmemset (s
.buf1
, '@', array_length (s
.buf1
));
71 wmemset (s
.buf2
, '@', array_length (s
.buf2
));
72 wcscpy (s
.buf1
, L
"Hello,");
73 TEST_COMPARE (wcslcat (s
.buf1
, L
" world!!!!!!!!", array_length (s
.buf1
)),
75 TEST_COMPARE_BLOB (&s
, sizeof (s
),
76 L
"Hello, world!!!\0@@@@@@@@@@@@@@@@@@@@@@@@@", 128);
78 /* A destination string which is not NUL-terminated does not result
79 in any changes to the buffer. */
80 wmemset (s
.buf1
, '$', array_length (s
.buf1
));
81 wmemset (s
.buf2
, '@', array_length (s
.buf2
));
82 TEST_COMPARE (wcslcat (s
.buf1
, L
"", array_length (s
.buf1
)), 16);
83 TEST_COMPARE_BLOB (&s
, sizeof (s
), L
"$$$$$$$$$$$$$$$$@@@@@@@@@@@@@@@@", 128);
84 TEST_COMPARE (wcslcat (s
.buf1
, L
"Hello!", array_length (s
.buf1
)), 22);
85 TEST_COMPARE_BLOB (&s
, sizeof (s
), L
"$$$$$$$$$$$$$$$$@@@@@@@@@@@@@@@@", 128);
86 TEST_COMPARE (wcslcat (s
.buf1
, L
"Hello, world!!!!!!!!",
87 array_length (s
.buf1
)), 36);
88 TEST_COMPARE_BLOB (&s
, sizeof (s
), L
"$$$$$$$$$$$$$$$$@@@@@@@@@@@@@@@@", 128);
93 #include <support/test-driver.c>