Improve testing

src/elements/callback_builder.rs

@@ -31,6 +31,15 @@ callbacks!(SelectCallbacks, Fn(bool) -> anyhow::Result<()> + Send + Sync);
 callbacks!(CustomCallbacks, Fn(ControllerButton) -> anyhow::Result<bool> + Send + Sync);
 callbacks!(VecCallbacks, Fn(&dyn Any) -> Result<()> + Send + Sync);
 
+#[cfg(test)]
+mod test {
+    use super::*;
+    use anyhow::Result;
+
+    fn normal_fn() -> impl Fn() -> Result<()> + Send + Sync {
+        || Ok(())
+    }
+
     #[test]
     fn test_click_callback_builder() {
         struct Test;
@@ -46,10 +55,8 @@ fn test_click_callback_builder() {
 
         let t = Test;
 
-    let cbs = ClickCallbacks::default().add("test", || {
-        println!("hello world!");
-        Ok(())
-    });
+        let cbs = ClickCallbacks::default().add("normal_test", normal_fn());
 
         t.set_click_callbacks(cbs.into()).unwrap();
     }
+}