test: derive repr for enum

Author: Bogay

test/src/test_export_enum.rs

@@ -2,7 +2,9 @@ use gdnative::prelude::*;
 
 #[derive(Debug, PartialEq, Clone, Copy, Export, ToVariant, FromVariant)]
 enum Dir {
+    #[variant(enum = "repr")]
     Up = 1,
+    #[variant(enum = "repr")]
     Down = -1,
 }