Add some tests for running basic server functionality

src/server/fingerd.rs

@@ -474,5 +474,11 @@ mod tests {
         assert_eq!(user_entry.sessions[0].host, "host.example.com");
     }
 
+    #[test]
+    fn test_finger_root() {
+        let user_entry = get_local_user("root").unwrap().unwrap();
+        assert_eq!(user_entry.username, "root");
+    }
+
     // TODO: test serialization roundtrip
 }

src/server/rwhod.rs

@@ -240,3 +240,22 @@ pub async fn rwhod_packet_sender_task(
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_determine_relevant_interfaces() {
+        let interfaces = determine_relevant_interfaces().unwrap();
+        for interface in interfaces {
+            println!("Interface: {} Address: {}", interface.name, interface.addr);
+        }
+    }
+
+    #[test]
+    fn test_generate_rwhod_status_update() {
+        let status_update = generate_rwhod_status_update().unwrap();
+        println!("{:?}", status_update);
+    }
+}