diff --git a/crates/adapters/postgres/src/notification.rs b/crates/adapters/postgres/src/notification.rs
index 81caec9..77b4cbb 100644
--- a/crates/adapters/postgres/src/notification.rs
+++ b/crates/adapters/postgres/src/notification.rs
@@ -161,30 +161,17 @@ impl NotificationRepository for PgNotificationRepository {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::user::PgUserRepository;
+    use crate::test_helpers;
     use chrono::Utc;
-    use domain::ports::UserWriter;
     use domain::{
         models::{notification::NotificationKind, user::User},
         value_objects::*,
     };
 
-    async fn seed_user(pool: &sqlx::PgPool) -> User {
-        let repo = PgUserRepository::new(pool.clone());
-        let u = User::new_local(
-            UserId::new(),
-            Username::new("alice").unwrap(),
-            Email::new("alice@ex.com").unwrap(),
-            PasswordHash("h".into()),
-        );
-        repo.save(&u).await.unwrap();
-        u
-    }
-
     #[sqlx::test(migrations = "./migrations")]
     async fn save_and_list(pool: sqlx::PgPool) {
-        let user = seed_user(&pool).await;
-        let from_user = seed_user(&pool).await;
+        let user = test_helpers::seed_user(&pool, "alice", "alice@ex.com").await;
+        let from_user = test_helpers::seed_user(&pool, "bob", "bob@ex.com").await;
         let repo = PgNotificationRepository::new(pool);
         use domain::models::feed::PageParams;
         let n = Notification {
@@ -213,8 +200,8 @@ mod tests {
 
     #[sqlx::test(migrations = "./migrations")]
     async fn mark_all_read(pool: sqlx::PgPool) {
-        let user = seed_user(&pool).await;
-        let from_user = seed_user(&pool).await;
+        let user = test_helpers::seed_user(&pool, "alice", "alice@ex.com").await;
+        let from_user = test_helpers::seed_user(&pool, "bob", "bob@ex.com").await;
         let repo = PgNotificationRepository::new(pool);
         use domain::models::feed::PageParams;
         let n = Notification {