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/* Test of u16_[v]asnprintf() function.
Copyright (C) 2007, 2009-2024 Free Software Foundation, Inc.
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, either version 3 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/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
static void
test_function (uint16_t * (*my_asnprintf) (uint16_t *, size_t *, const char *, ...))
{
uint16_t buf[8];
int size;
/* Test return value convention. */
for (size = 0; size <= 8; size++)
{
size_t length = size;
uint16_t *result = my_asnprintf (NULL, &length, "%d", 12345);
static const uint16_t expected[] =
{ '1', '2', '3', '4', '5', 0 };
ASSERT (result != NULL);
ASSERT (u16_strcmp (result, expected) == 0);
ASSERT (length == 5);
free (result);
}
for (size = 0; size <= 8; size++)
{
static const uint16_t initializer[] =
{ 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F', 0 };
static const uint16_t expected[] =
{ '1', '2', '3', '4', '5', 0 };
size_t length;
uint16_t *result;
u16_cpy (buf, initializer, 8);
length = size;
result = my_asnprintf (buf, &length, "%d", 12345);
ASSERT (result != NULL);
ASSERT (u16_strcmp (result, expected) == 0);
ASSERT (length == 5);
if (size < 6)
ASSERT (result != buf);
ASSERT (u16_cmp (buf + size, initializer + size, 8 - size) == 0);
if (result != buf)
free (result);
}
/* Verify that u16_[v]asnprintf() rejects a width > 2 GiB, < 4 GiB. */
{
size_t length;
uint16_t *s = my_asnprintf (NULL, &length, "x%03000000000dy\n", -17);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
static const uint16_t arg[] = { '@', 0 };
size_t length;
uint16_t *s = my_asnprintf (NULL, &length, "x%03000000000lUy\n", arg);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
/* Verify that u16_[v]asnprintf() rejects a width > 4 GiB. */
{
size_t length;
uint16_t *s =
my_asnprintf (NULL, &length,
"x%04294967306dy\n", /* 2^32 + 10 */
-17);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
static const uint16_t arg[] = { '@', 0 };
size_t length;
uint16_t *s =
my_asnprintf (NULL, &length,
"x%04294967306lUy\n", /* 2^32 + 10 */
arg);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
size_t length;
uint16_t *s =
my_asnprintf (NULL, &length,
"x%018446744073709551626dy\n", /* 2^64 + 10 */
-17);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
static const uint16_t arg[] = { '@', 0 };
size_t length;
uint16_t *s =
my_asnprintf (NULL, &length,
"x%018446744073709551626lUy\n", /* 2^64 + 10 */
arg);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
}
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