Reset session when cloned.

src/lib.rs

@@ -39,7 +39,6 @@ mod test_message {
 }
 
 /// Application client to MoreThanText
-#[derive(Clone)]
 pub struct MoreThanText {
     session: Option<SessionData>,
     tx: Sender<Message>,
@@ -115,6 +114,15 @@ impl MoreThanText {
     }
 }
 
+impl Clone for MoreThanText {
+    fn clone(&self) -> Self {
+        Self {
+           session: None,
+           tx: self.tx.clone(),
+        }
+    }
+}
+
 #[cfg(test)]
 mod mtt_client {
     use super::*;
@@ -140,4 +148,12 @@ mod mtt_client {
         mtt.open_session(None);
         assert_ne!(mtt.get_id(), id1);
     }
+
+    #[test]
+    fn cloned_clients_have_no_session() {
+        let mut mtt = MoreThanText::new();
+        mtt.open_session(None);
+        let result = mtt.clone();
+        assert!(result.session.is_none());
+    }
 }