New unit test framework, first test pidfile funcs

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

tests/pidfile_func.c

@@ -0,0 +1,71 @@
+#include <paths.h>
+#include <stdarg.h>
+#include <time.h>
+#include "check.h"
+
+extern char *__progname;
+extern char *__pidfile_name;
+extern char *__pidfile_path;
+
+static char PIDFILE[42];
+static int verbose = 0;
+static struct stat before, after;
+
+static void sigterm_handler(int UNUSED(signo))
+{
+	if (verbose)
+		printf("Exiting ...\n");
+}
+
+static void sigalrm_handler(int UNUSED(signo))
+{
+	pidfile(NULL);
+	if (!fexist(PIDFILE))
+		err(1, "failed creating %s", PIDFILE);
+	stat(PIDFILE, &before);
+}
+
+static int mtime()
+{
+	int ret;
+	char buf[80];
+
+	/* Must sleep a while here otherwise we execute too fast => no mtime change :-( */
+	usleep(10000);
+
+	if (verbose)
+		printf("Calling pidfile() again to update mtime ...\n");
+	pidfile(NULL);
+	stat(PIDFILE, &after);
+
+	ret = timespec_newer(&after.st_mtim, &before.st_mtim);
+	if (verbose) {
+		printf("Before: %s\n", timespec2str(&before.st_mtim, buf, sizeof(buf)));
+		printf("After : %s\n", timespec2str(&after.st_mtim, buf, sizeof(buf)));
+	}
+
+	return !ret;
+}
+
+int main(int argc, char *argv[])
+{
+	if (argc > 1 && !strcmp(argv[1], "-v"))
+		verbose = 1;
+
+	/* Override default _PATH_VARRUN in pidfile() */
+	__pidfile_path = _PATH_TMP;
+	snprintf(PIDFILE, sizeof(PIDFILE), "%s%s.pid", __pidfile_path, __progname);
+
+	signal(SIGTERM, sigterm_handler);
+	signal(SIGALRM, sigalrm_handler);
+	alarm(1);
+
+	return     test(pidfile_poll(PIDFILE) != getpid(), "Testing pidfile_poll()")
+		|| test(strcmp(__pidfile_name, PIDFILE),   "Testing __pidfile_name vs guessed PID filename")
+		|| test(mtime(),                           "Testing mtime update of followup pidfile() call")
+		|| test(pidfile_signal(PIDFILE, SIGTERM),  "Testing signalling ourselves")
+		;
+
+	return 0;
+}
+