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#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <errno.h>
#ifdef USE_HOST_LIBC
#define TEST_FILE "dprintf-host-libc.tmp"
#else
#define TEST_FILE "dprintf.tmp"
#endif
int main() {
int fd = open(TEST_FILE, O_RDWR | O_CREAT, 0666);
assert(fd > -1);
int ret = dprintf(fd, "aaa");
assert(ret == 3);
// Check if we can read back the same things.
// Also checks to see if the fd is still open,
// which is issue #199.
off_t seek = lseek(fd, 0, SEEK_SET);
assert(seek == 0);
char buf[3];
ssize_t num_read = read(fd, buf, 3);
assert(num_read == 3);
assert(buf[0] == 'a'
&& buf[1] == 'a'
&& buf[2] == 'a');
// All the tests pass, now we can unlink the file.
ret = unlink(TEST_FILE);
assert(ret == 0);
return 0;
}
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