testing/imap_conn: update imapconn shell use

melib/src/backends.rs

@@ -250,6 +250,10 @@ pub trait MailBackend: ::std::fmt::Debug + Send + Sync {
         None
     }
     fn as_any(&self) -> &dyn Any;
+
+    fn as_any_mut(&mut self) -> &mut dyn Any {
+        unimplemented!()
+    }
 }
 
 /// A `BackendOp` manages common operations for the various mail backends. They only live for the

melib/src/backends/imap.rs

@@ -471,6 +471,10 @@ impl MailBackend for ImapType {
         self
     }
 
+    fn as_any_mut(&mut self) -> &mut dyn::std::any::Any {
+        self
+    }
+
     fn tags(&self) -> Option<Arc<RwLock<BTreeMap<u64, String>>>> {
         if *self.can_create_flags.lock().unwrap() {
             Some(self.tag_index.clone())
@@ -530,8 +534,8 @@ impl ImapType {
     pub fn shell(&mut self) {
         let mut conn = ImapConnection::new_connection(&self.server_conf);
         let mut res = String::with_capacity(8 * 1024);
+        conn.send_command(b"NOOP").unwrap();
         conn.read_response(&mut res).unwrap();
-        debug!("out: {}", &res);
 
         let mut input = String::new();
         loop {
@@ -540,6 +544,9 @@ impl ImapType {
 
             match io::stdin().read_line(&mut input) {
                 Ok(_) => {
+                    if input.trim().eq_ignore_ascii_case("logout") {
+                        break;
+                    }
                     conn.send_command(input.as_bytes()).unwrap();
                     conn.read_lines(&mut res, String::new()).unwrap();
                     if input.trim() == "IDLE" {
@@ -550,9 +557,6 @@ impl ImapType {
                         conn = iter.into_conn();
                     }
                     debug!("out: {}", &res);
-                    if input.trim().eq_ignore_ascii_case("logout") {
-                        break;
-                    }
                 }
                 Err(error) => debug!("error: {}", error),
             }

testing/src/imap_conn.rs

@@ -33,7 +33,11 @@ fn main() -> Result<()> {
         .collect(),
         ..Default::default()
     };
-    let mut imap = ImapType::new(&set, Box::new(|_| true));
+    let mut imap = ImapType::new(&set, Box::new(|_| true))?;
-    imap.shell();
+
+    (imap.as_any_mut())
+        .downcast_mut::<ImapType>()
+        .unwrap()
+        .shell();
     Ok(())
 }