1 files changed, 9 insertions, 2 deletions
diff --git a/tests.h b/tests.h
index 96b8357..339d565 100644
--- a/tests.h
+++ b/tests.h
@@ -1,8 +1,15 @@
 #ifndef TESTS_H_
 #define TESTS_H_
 
-unsigned int run_tests(
-  void (*on_fail)(const char * const, const uint8_t *, const uint8_t *)
+#include <stdint.h>
+
+typedef void (*test_fail_cb_t)(
+  const int,
+  const char * const,
+  const uint8_t *,
+  const uint8_t *
 );
 
+unsigned int run_tests(test_fail_cb_t);
+
 #endif /* TESTS_H_ */