ccan/noerr/test/run.c

#include "noerr/noerr.h"
#include "tap.h"
#include "noerr/noerr.c"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <assert.h>

int main(int argc, char *argv[])
{
	/* tempnam(3) is generally a bad idea, but OK here. */
	char *name = tempnam(NULL, "noerr");
	int fd;

	plan_tests(12);
	/* Should fail to unlink. */
	ok1(unlink(name) != 0);
	ok1(errno == ENOENT);

	/* This one should not set errno. */
	errno = 100;
	ok1(unlink_noerr(name) == ENOENT);
	ok1(errno == 100);

	/* Should fail to close. */
	ok1(close(-1) != 0);
	ok1(errno == EBADF);

	/* This one should not set errno. */
	errno = 100;
	ok1(close_noerr(-1) == EBADF);
	ok1(errno == 100);

	/* Test successful close/unlink doesn't hit errno either. */
	fd = open(name, O_WRONLY|O_CREAT|O_EXCL, 0600);
	assert(fd >= 0);

	errno = 100;
	ok1(close_noerr(fd) == 0);
	ok1(errno == 100);

	errno = 100;
	ok1(unlink_noerr(name) == 0);
	ok1(errno == 100);

	return exit_status();
}