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/*
* snprintf test suite.
*
* Written by Russ Allbery <rra@stanford.edu>
* Copyright 2009, 2010 Board of Trustees, Leland Stanford Jr. University
* Copyright (c) 2004, 2005, 2006
* by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
* 2002, 2003 by The Internet Software Consortium and Rich Salz
*
* See LICENSE for licensing terms.
*/
#include <config.h>
#include <portable/system.h>
#include <tests/tap/basic.h>
/*
* Disable the requirement that format strings be literals. We need variable
* formats for easy testing.
*/
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
/*
* Intentionally don't add the printf attribute here since we pass a
* zero-length printf format during testing and don't want warnings.
*/
int test_snprintf(char *str, size_t count, const char *fmt, ...);
int test_vsnprintf(char *str, size_t count, const char *fmt, va_list args);
static const char string[] = "abcdefghijklmnopqrstuvwxyz0123456789";
static const char *const fp_formats[] = {
"%-1.5f", "%1.5f", "%31.9f", "%10.5f", "% 10.5f", "%+22.9f",
"%+4.9f", "%01.3f", "%3.1f", "%3.2f", "%.0f", "%.1f",
"%f",
/* %e and %g formats aren't really implemented yet. */
#if 0
"%-1.5e", "%1.5e", "%31.9e", "%10.5e", "% 10.5e", "%+22.9e",
"%+4.9e", "%01.3e", "%3.1e", "%3.2e", "%.0e", "%.1e",
"%e",
"%-1.5g", "%1.5g", "%31.9g", "%10.5g", "% 10.5g", "%+22.9g",
"%+4.9g", "%01.3g", "%3.1g", "%3.2g", "%.0g", "%.1g",
"%g",
#endif
NULL
};
static const char *const int_formats[] = {
"%-1.5d", "%1.5d", "%31.9d", "%5.5d", "%10.5d", "% 10.5d",
"%+22.30d", "%01.3d", "%4d", "%d", "%ld", NULL
};
static const char *const uint_formats[] = {
"%-1.5lu", "%1.5lu", "%31.9lu", "%5.5lu", "%10.5lu", "% 10.5lu",
"%+6.30lu", "%01.3lu", "%4lu", "%lu", "%4lx", "%4lX",
"%01.3lx", "%1lo", NULL
};
static const char *const llong_formats[] = {
"%lld", "%-1.5lld", "%1.5lld", "%123.9lld", "%5.5lld",
"%10.5lld", "% 10.5lld", "%+22.33lld", "%01.3lld", "%4lld",
NULL
};
static const char *const ullong_formats[] = {
"%llu", "%-1.5llu", "%1.5llu", "%123.9llu", "%5.5llu",
"%10.5llu", "% 10.5llu", "%+22.33llu", "%01.3llu", "%4llu",
"%llx", "%llo", NULL
};
static const double fp_nums[] = {
-1.5, 134.21, 91340.2, 341.1234, 0203.9, 0.96, 0.996, 0.9996, 1.996,
4.136, 0.1, 0.01, 0.001, 10.1, 0
};
static long int_nums[] = {
-1, 134, 91340, 341, 0203, 0
};
static unsigned long uint_nums[] = {
(unsigned long) -1, 134, 91340, 341, 0203, 0
};
static long long llong_nums[] = {
~(long long) 0, /* All-1 bit pattern. */
(~(unsigned long long) 0) >> 1, /* Largest signed long long. */
-150, 134, 91340, 341,
0
};
static unsigned long long ullong_nums[] = {
~(unsigned long long) 0, /* All-1 bit pattern. */
(~(unsigned long long) 0) >> 1, /* Largest signed long long. */
134, 91340, 341,
0
};
static void
test_format(bool trunc, const char *expected, int count,
const char *format, ...)
{
char buf[128];
int result;
va_list args;
va_start(args, format);
result = test_vsnprintf(buf, trunc ? 32 : sizeof(buf), format, args);
va_end(args);
is_string(expected, buf, "format %s, wanted %s", format, expected);
is_int(count, result, "...and output length correct");
}
int
main(void)
{
int n, i, count;
unsigned int j;
long lcount;
char lgbuf[128];
plan(8 +
(18 + (ARRAY_SIZE(fp_formats) - 1) * ARRAY_SIZE(fp_nums)
+ (ARRAY_SIZE(int_formats) - 1) * ARRAY_SIZE(int_nums)
+ (ARRAY_SIZE(uint_formats) - 1) * ARRAY_SIZE(uint_nums)
+ (ARRAY_SIZE(llong_formats) - 1) * ARRAY_SIZE(llong_nums)
+ (ARRAY_SIZE(ullong_formats) - 1) * ARRAY_SIZE(ullong_nums)) * 2);
is_int(4, test_snprintf(NULL, 0, "%s", "abcd"), "simple string length");
is_int(2, test_snprintf(NULL, 0, "%d", 20), "number length");
is_int(7, test_snprintf(NULL, 0, "Test %.2s", "abcd"), "limited string");
is_int(1, test_snprintf(NULL, 0, "%c", 'a'), "character length");
is_int(0, test_snprintf(NULL, 0, ""), "empty format length");
test_format(true, "abcd", 4, "%s", "abcd");
test_format(true, "20", 2, "%d", 20);
test_format(true, "Test ab", 7, "Test %.2s", "abcd");
test_format(true, "a", 1, "%c", 'a');
test_format(true, "", 0, "");
test_format(true, "abcdefghijklmnopqrstuvwxyz01234", 36, "%s", string);
test_format(true, "abcdefghij", 10, "%.10s", string);
test_format(true, " abcdefghij", 12, "%12.10s", string);
test_format(true, " abcdefghijklmnopqrstuvwxyz0", 40, "%40s", string);
test_format(true, "abcdefghij ", 14, "%-14.10s", string);
test_format(true, " abcdefghijklmnopq", 50, "%50s", string);
test_format(true, "%abcd%", 6, "%%%0s%%", "abcd");
test_format(true, "", 0, "%.0s", string);
test_format(true, "abcdefghijklmnopqrstuvwxyz 444", 32, "%.26s %d",
string, 4444);
test_format(true, "abcdefghijklmnopqrstuvwxyz -2.", 32, "%.26s %.1f",
string, -2.5);
test_format(true, "abcdefghij4444", 14, "%.10s%n%d", string, &count, 4444);
is_int(10, count, "correct output from %%n");
test_format(true, "abcdefghijklmnopqrstuvwxyz01234", 36, "%n%s%ln",
&count, string, &lcount);
is_int(0, count, "correct output from two %%n");
is_int(31, lcount, "correct output from long %%ln");
test_format(true, "(null)", 6, "%s", NULL);
n = 26;
for (i = 0; fp_formats[i] != NULL; i++)
for (j = 0; j < ARRAY_SIZE(fp_nums); j++) {
count = sprintf(lgbuf, fp_formats[i], fp_nums[j]);
test_format(false, lgbuf, count, fp_formats[i], fp_nums[j]);
}
for (i = 0; int_formats[i] != NULL; i++)
for (j = 0; j < ARRAY_SIZE(int_nums); j++) {
count = sprintf(lgbuf, int_formats[i], int_nums[j]);
test_format(false, lgbuf, count, int_formats[i], int_nums[j]);
}
for (i = 0; uint_formats[i] != NULL; i++)
for (j = 0; j < ARRAY_SIZE(uint_nums); j++) {
count = sprintf(lgbuf, uint_formats[i], uint_nums[j]);
test_format(false, lgbuf, count, uint_formats[i], uint_nums[j]);
}
for (i = 0; llong_formats[i] != NULL; i++)
for (j = 0; j < ARRAY_SIZE(llong_nums); j++) {
count = sprintf(lgbuf, llong_formats[i], llong_nums[j]);
test_format(false, lgbuf, count, llong_formats[i], llong_nums[j]);
}
for (i = 0; ullong_formats[i] != NULL; i++)
for (j = 0; j < ARRAY_SIZE(ullong_nums); j++) {
count = sprintf(lgbuf, ullong_formats[i], ullong_nums[j]);
test_format(false, lgbuf, count, ullong_formats[i],
ullong_nums[j]);
}
return 0;
}
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