diff --git a/tests/unit/test_asset_list_ordering.py b/tests/unit/test_asset_list_ordering.py
index 3e25a53d0..4992e7b23 100755
--- a/tests/unit/test_asset_list_ordering.py
+++ b/tests/unit/test_asset_list_ordering.py
@@ -21,7 +21,9 @@ def _repository():
     return SQLAlchemyAssetRepository(session), session
 
 
-def _insert_asset_with_created_at(session, asset_id: str, library_id: str, project_id: str, created_at: datetime, file_type: str = "video"):
+def _insert_asset_with_created_at(
+    session, asset_id: str, library_id: str, project_id: str, created_at: datetime, file_type: str = "video"
+):
     """直接插入指定created_at的素材，绕过create()方法的时间覆盖。"""
     model = AssetModel(
         id=asset_id,
@@ -77,8 +79,12 @@ def test_find_by_library_and_file_type_ordered_by_created_at_desc():
     base_time = datetime(2026, 7, 18, 10, 0, 0, tzinfo=timezone.utc)
 
     _insert_asset_with_created_at(session, "video-old", "lib-1", "proj-1", base_time, file_type="video")
-    _insert_asset_with_created_at(session, "video-new", "lib-1", "proj-1", base_time + timedelta(hours=2), file_type="video")
-    _insert_asset_with_created_at(session, "audio-new", "lib-1", "proj-1", base_time + timedelta(hours=1), file_type="audio")
+    _insert_asset_with_created_at(
+        session, "video-new", "lib-1", "proj-1", base_time + timedelta(hours=2), file_type="video"
+    )
+    _insert_asset_with_created_at(
+        session, "audio-new", "lib-1", "proj-1", base_time + timedelta(hours=1), file_type="audio"
+    )
     session.commit()
 
     # 只查video类型，验证排序和过滤同时生效