something else to test for command::in

src/commands/in.rs

@@ -88,6 +88,7 @@ mod tests {
         InCommand::handle(args, &mut d, &mut out, &mut err, &Default::default()).unwrap();
 
         assert!(false, "there are still no entries");
+        assert!(false, "a message is issued to the user warning a running entry in this sheet");
     }
 
     #[test]