add tests

src/model/logbook.rs

@@ -294,6 +294,16 @@ ORDER BY departure DESC
             .unwrap();
     }
 
+    #[cfg(test)]
+    pub async fn highest_id(db: &SqlitePool) -> i32 {
+        sqlx::query!("SELECT max(id) as id FROM logbook")
+            .fetch_one(db)
+            .await
+            .unwrap()
+            .id
+            .unwrap()
+    }
+
     pub async fn home(
         &self,
         db: &SqlitePool,