Added backend.

src/queue.rs

@@ -1,7 +1,4 @@
-use crate::{
-    Request,
-    session2::SessionMessage,
-};
+use crate::{session2::SessionMessage, Request};
 use std::{
     sync::mpsc::{channel, Receiver, Sender},
     thread::spawn,
@@ -35,10 +32,7 @@ impl From<SessionMessage> for Message {
 #[cfg(test)]
 mod messages {
     use super::*;
-    use crate::{
-        create_request::empty_request,
-        Field,
-    };
+    use crate::{create_request::empty_request, Field};
 
     #[test]
     fn from_request() {
@@ -70,11 +64,9 @@ mod messages {
         let id: Option<Field> = None;
         let sess_msg: SessionMessage = id.into();
         match sess_msg.into() {
-            Message::SessMsg(result) => {
-                match result {
-                    SessionMessage::Validate(data) => assert!(data.is_none()),
-                    _ => unreachable!("should have been a validate"),
-                }
+            Message::SessMsg(result) => match result {
+                SessionMessage::Validate(data) => assert!(data.is_none()),
+                _ => unreachable!("should have been a validate"),
             },
             _ => unreachable!("should have been a session message"),
         }