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#include "config.h"
#include "ntp_stdlib.h"
#include "unity.h"
#ifndef VSNPRINTF_PERCENT_M
// format_errmsg() is normally private to msyslog.c
void format_errmsg(char *, size_t, const char *, int);
#endif
void setUp(void);
void test_msnprintf(void);
void test_msnprintfLiteralPercentm(void);
void test_msnprintfBackslashLiteralPercentm(void);
void test_msnprintfBackslashPercent(void);
void test_msnprintfHangingPercent(void);
void test_format_errmsgHangingPercent(void);
void test_msnprintfNullTarget(void);
void test_msnprintfTruncate(void);
void
setUp(void)
{
init_lib();
return;
}
void
test_msnprintf(void) {
#define FMT_PREFIX "msyslog.cpp ENOENT: "
char exp_buf[512];
char act_buf[512];
int exp_cnt;
int act_cnt;
exp_cnt = snprintf(exp_buf, sizeof(exp_buf), FMT_PREFIX "%s",
strerror(ENOENT));
errno = ENOENT;
act_cnt = msnprintf(act_buf, sizeof(act_buf), FMT_PREFIX "%m");
TEST_ASSERT_EQUAL(exp_cnt, act_cnt);
TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf);
}
void
test_msnprintfLiteralPercentm(void)
{
char exp_buf[32];
char act_buf[32];
int exp_cnt;
int act_cnt;
exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "%%m");
errno = ENOENT;
act_cnt = msnprintf(act_buf, sizeof(act_buf), "%%m");
TEST_ASSERT_EQUAL(exp_cnt, act_cnt);
TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf);
}
void
test_msnprintfBackslashLiteralPercentm(void) {
char exp_buf[32];
char act_buf[32];
int exp_cnt;
int act_cnt;
exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "\%%m");
errno = ENOENT;
act_cnt = msnprintf(act_buf, sizeof(act_buf), "\%%m");
TEST_ASSERT_EQUAL(exp_cnt, act_cnt);
TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf);
}
void
test_msnprintfBackslashPercent(void) {
char exp_buf[32];
char act_buf[32];
int exp_cnt;
int act_cnt;
exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "\%s",
strerror(ENOENT));
errno = ENOENT;
act_cnt = msnprintf(act_buf, sizeof(act_buf), "\%m");
TEST_ASSERT_EQUAL(exp_cnt, act_cnt);
TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf);
}
void
test_msnprintfHangingPercent(void) {
static char fmt[] = "percent then nul term then non-nul %\0oops!";
char exp_buf[64];
char act_buf[64];
int exp_cnt;
int act_cnt;
ZERO(exp_buf);
ZERO(act_buf);
exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "%s", fmt);
act_cnt = msnprintf(act_buf, sizeof(act_buf), "%s", fmt);
TEST_ASSERT_EQUAL(exp_cnt, act_cnt);
TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf);
TEST_ASSERT_EQUAL_STRING("", act_buf + 1 + strlen(act_buf));
}
void
test_format_errmsgHangingPercent(void) {
#ifndef VSNPRINTF_PERCENT_M
static char fmt[] = "percent then nul term then non-nul %\0oops!";
char act_buf[64];
ZERO(act_buf);
format_errmsg(act_buf, sizeof(act_buf), fmt, ENOENT);
TEST_ASSERT_EQUAL_STRING(fmt, act_buf);
TEST_ASSERT_EQUAL_STRING("", act_buf + 1 + strlen(act_buf));
#else
TEST_IGNORE_MESSAGE("VSNPRINTF_PERCENT_M is defined")
#endif
}
void
test_msnprintfNullTarget(void) {
int exp_cnt;
int act_cnt;
exp_cnt = snprintf(NULL, 0, "%d", 123);
errno = ENOENT;
act_cnt = msnprintf(NULL, 0, "%d", 123);
TEST_ASSERT_EQUAL(exp_cnt, act_cnt);
}
void
test_msnprintfTruncate(void) {
char undist[] = "undisturbed";
char exp_buf[512];
char act_buf[512];
int exp_cnt;
int act_cnt;
memcpy(exp_buf + 3, undist, sizeof(undist));
memcpy(act_buf + 3, undist, sizeof(undist));
exp_cnt = snprintf(exp_buf, 3, "%s", strerror(ENOENT));
errno = ENOENT;
act_cnt = msnprintf(act_buf, 3, "%m");
TEST_ASSERT_EQUAL('\0', exp_buf[2]);
TEST_ASSERT_EQUAL('\0', act_buf[2]);
TEST_ASSERT_TRUE(act_cnt > 0);
TEST_ASSERT_EQUAL(exp_cnt, act_cnt);
TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf);
TEST_ASSERT_EQUAL_STRING(exp_buf + 3, undist);
TEST_ASSERT_EQUAL_STRING(act_buf + 3, undist);
}
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