diff --git a/tests/string_primary_key_tests.rs b/tests/string_primary_key_tests.rs
index 94d1ae554c..569f1cc09f 100644
--- a/tests/string_primary_key_tests.rs
+++ b/tests/string_primary_key_tests.rs
@@ -2,7 +2,7 @@ pub mod common;
 
 pub use common::{features::*, setup::*, TestContext};
 use pretty_assertions::assert_eq;
-use sea_orm::{entity::prelude::*, entity::*, DatabaseConnection};
+use sea_orm::{entity::prelude::*, entity::*, sea_query::OnConflict, DatabaseConnection};
 use serde_json::json;
 
 #[sea_orm_macros::test]
@@ -30,7 +30,7 @@ pub async fn insert_and_delete_repository(db: &DatabaseConnection) -> Result<(),
     }
     .into_active_model();
 
-    let result = repository.insert(db).await?;
+    let result = repository.clone().insert(db).await?;
 
     assert_eq!(
         result,
@@ -42,6 +42,13 @@ pub async fn insert_and_delete_repository(db: &DatabaseConnection) -> Result<(),
         }
     );
 
+    let err = Repository::insert(repository)
+        .on_conflict(OnConflict::new().do_nothing().to_owned())
+        .exec(db)
+        .await;
+
+    assert_eq!(err.err(), Some(DbErr::RecordNotInserted));
+
     result.delete(db).await?;
 
     assert_eq!(