homework: add get_name method to room

smart-house/src/room.rs

@@ -13,6 +13,10 @@ impl Room {
         }
     }
 
+    pub fn get_name(&self) -> &str {
+        &self.name
+    }
+
     fn is_valid_idx(&self, idx: usize) -> bool {
         idx < self.devices.len()
     }
@@ -48,6 +52,7 @@ mod tests {
         ]);
         let mut room = Room::new("test_room", devices);
         assert_eq!(room.name, "test_room");
+        assert_eq!(room.get_name(), "test_room");
         room.print_status();
 
         assert_eq!(format!("{}", room.get_device(0).unwrap().display()), "DEV:PSoc[ OFF : 0.0 ]");