#include "macro.h"
#include "libudev.h"
-#define READ_END 0
+#define READ_END 0
#define WRITE_END 1
+#ifndef TEST_PREFIX
+#define TEST_PREFIX ""
+#endif
+
/* avoid (sometimes expensive) calculations of parameters for debug output */
#define udev_log_cond(udev, prio, arg...) \
do { \