Successfully influenced effectful-ness status of FFI func

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/test.c b/tests/test.c
index c40eb966..b4f23670 100644
--- a/tests/test.c
+++ b/tests/test.c
@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 #include "../include/urweb.h"
 
 typedef uw_Basis_string uw_Test_t;
@@ -13,3 +15,8 @@ uw_Basis_string uw_Test_out(uw_context ctx, uw_Test_t s) {
 uw_Test_t uw_Test_frob(uw_context ctx, uw_Test_t s1, uw_Basis_string s2) {
   return uw_Basis_strcat(ctx, s1, s2);
 }
+
+uw_Basis_unit uw_Test_print(uw_context ctx) {
+  printf("Hi there!\n");
+  return uw_unit_v;
+}