diff --git a/crates/backend/tests/integration_tests.rs b/crates/backend/tests/integration_tests.rs
index a3ddc6f..c809cb5 100644
--- a/crates/backend/tests/integration_tests.rs
+++ b/crates/backend/tests/integration_tests.rs
@@ -1,9 +1,9 @@
-use actix_web::{test, web, App};
-use backend::{controller, Database, build_database_url};
+use actix_web::{App, test, web};
+use backend::{Database, build_database_url, controller};
 use migration::{Migrator, MigratorTrait};
 use serde_json::json;
 use serial_test::serial;
-use testcontainers::{runners::AsyncRunner, ContainerAsync, ImageExt};
+use testcontainers::{ContainerAsync, ImageExt, runners::AsyncRunner};
 use testcontainers_modules::{postgres::Postgres, redis::Redis};
 
 async fn setup_test_environment() -> (ContainerAsync<Postgres>, ContainerAsync<Redis>, Database) {
@@ -13,13 +13,13 @@ async fn setup_test_environment() -> (ContainerAsync<Postgres>, ContainerAsync<R
         .start()
         .await
         .unwrap();
-    
+
     let postgres_port = postgres_container.get_host_port_ipv4(5432).await.unwrap();
-    
-    // Start Redis container  
+
+    // Start Redis container
     let redis_container = Redis::default().start().await.unwrap();
     let redis_port = redis_container.get_host_port_ipv4(6379).await.unwrap();
-    
+
     // Set environment variables for the application
     unsafe {
         std::env::set_var("DB_HOST", "127.0.0.1");
@@ -30,17 +30,17 @@ async fn setup_test_environment() -> (ContainerAsync<Postgres>, ContainerAsync<R
         std::env::set_var("REDIS_HOST", "127.0.0.1");
         std::env::set_var("REDIS_PORT", redis_port.to_string());
     }
-    
+
     // Wait a bit for containers to be ready
     tokio::time::sleep(tokio::time::Duration::from_secs(2)).await;
-    
+
     // Use the existing build_database_url function
     let database_url = build_database_url();
     let database = Database::new(database_url.into()).await.unwrap();
-    
+
     // Run migrations
     Migrator::up(database.connection(), None).await.unwrap();
-    
+
     (postgres_container, redis_container, database)
 }
 
@@ -53,13 +53,14 @@ mod tests {
     #[serial]
     async fn test_user_crud_flow() {
         let (_pg_container, _redis_container, database) = setup_test_environment().await;
-        
+
         let app = test::init_service(
             App::new()
                 .app_data(web::Data::new(database.clone()))
-                .service(web::scope("/api/v1").configure(controller::register_controllers))
-        ).await;
-        
+                .service(web::scope("/api/v1").configure(controller::register_controllers)),
+        )
+        .await;
+
         // Test creating a user
         let create_user_payload = json!({
             "username": "testuser",
@@ -67,30 +68,36 @@ mod tests {
             "first_name": "Test",
             "last_name": "User"
         });
-        
+
         let req = test::TestRequest::post()
             .uri("/api/v1/user")
             .set_json(&create_user_payload)
             .to_request();
-        
+
         let resp = test::call_service(&app, req).await;
-        
+
         // Log response for debugging
         let status = resp.status();
         let body = test::read_body(resp).await;
-        println!("Create user response: {} - {}", status, String::from_utf8_lossy(&body));
-        
+        println!(
+            "Create user response: {} - {}",
+            status,
+            String::from_utf8_lossy(&body)
+        );
+
         if status != StatusCode::CREATED {
             // Try to get users list to see what endpoints are available
-            let req = test::TestRequest::get()
-                .uri("/api/v1/user")
-                .to_request();
+            let req = test::TestRequest::get().uri("/api/v1/user").to_request();
             let resp = test::call_service(&app, req).await;
             let resp_status = resp.status();
             let body = test::read_body(resp).await;
-            println!("Get users response: {} - {}", resp_status, String::from_utf8_lossy(&body));
+            println!(
+                "Get users response: {} - {}",
+                resp_status,
+                String::from_utf8_lossy(&body)
+            );
         }
-        
+
         // For now, just verify the API is responding
         assert!(status.is_success() || status.is_client_error());
     }
@@ -99,34 +106,38 @@ mod tests {
     #[serial]
     async fn test_api_endpoints_respond() {
         let (_pg_container, _redis_container, database) = setup_test_environment().await;
-        
+
         let app = test::init_service(
             App::new()
                 .app_data(web::Data::new(database.clone()))
-                .service(web::scope("/api/v1").configure(controller::register_controllers))
-        ).await;
-        
+                .service(web::scope("/api/v1").configure(controller::register_controllers)),
+        )
+        .await;
+
         // Test various endpoints to ensure they respond
         let endpoints = vec![
             "/api/v1/user",
-            "/api/v1/project", 
+            "/api/v1/project",
             "/api/v1/group",
             "/api/v1/class",
             "/api/v1/template",
         ];
-        
+
         for endpoint in endpoints {
-            let req = test::TestRequest::get()
-                .uri(endpoint)
-                .to_request();
-            
+            let req = test::TestRequest::get().uri(endpoint).to_request();
+
             let resp = test::call_service(&app, req).await;
             let status = resp.status();
-            
+
             println!("Endpoint {} responded with status: {}", endpoint, status);
-            
+
             // Verify endpoint is reachable (not 404)
-            assert_ne!(status, StatusCode::NOT_FOUND, "Endpoint {} should exist", endpoint);
+            assert_ne!(
+                status,
+                StatusCode::NOT_FOUND,
+                "Endpoint {} should exist",
+                endpoint
+            );
         }
     }
 
@@ -134,37 +145,44 @@ mod tests {
     #[serial]
     async fn test_database_connection() {
         let (_pg_container, _redis_container, database) = setup_test_environment().await;
-        
+
         // Test that we can connect to the database
         let connection = database.connection();
-        assert!(connection.ping().await.is_ok(), "Database should be reachable");
+        assert!(
+            connection.ping().await.is_ok(),
+            "Database should be reachable"
+        );
     }
 
-    #[actix_web::test] 
+    #[actix_web::test]
     #[serial]
     async fn test_invalid_endpoints_return_404() {
         let (_pg_container, _redis_container, database) = setup_test_environment().await;
-        
+
         let app = test::init_service(
             App::new()
                 .app_data(web::Data::new(database.clone()))
-                .service(web::scope("/api/v1").configure(controller::register_controllers))
-        ).await;
-        
+                .service(web::scope("/api/v1").configure(controller::register_controllers)),
+        )
+        .await;
+
         // Test non-existent endpoints
         let invalid_endpoints = vec![
             "/api/v1/nonexistent",
             "/api/v1/user/invalid/path",
             "/api/v2/user",
         ];
-        
+
         for endpoint in invalid_endpoints {
-            let req = test::TestRequest::get()
-                .uri(endpoint)
-                .to_request();
-            
+            let req = test::TestRequest::get().uri(endpoint).to_request();
+
             let resp = test::call_service(&app, req).await;
-            assert_eq!(resp.status(), StatusCode::NOT_FOUND, "Invalid endpoint {} should return 404", endpoint);
+            assert_eq!(
+                resp.status(),
+                StatusCode::NOT_FOUND,
+                "Invalid endpoint {} should return 404",
+                endpoint
+            );
         }
     }
-}
\ No newline at end of file
+}