Don't overwhelm console with test output...

--- a/test.sh
+++ b/test.sh
@@ -24,7 +24,11 @@
 do
   case X$# in
     X0) lua "$i";;
-    *) "$@" "$i";;
+    *) "$@" "$i" > "${i%.lua}.out" 2>&1 || {
+         echo "Tests failed, printing last 30 lines of the output..."
+         tail -n 30 "${i%.lua}.out"
+         exit 1
+       };;
   esac
 done