diff --git a/tests/unit/test_mediakit_smart_clips.py b/tests/unit/test_mediakit_smart_clips.py
index f234dd184..69c1351c9 100644
--- a/tests/unit/test_mediakit_smart_clips.py
+++ b/tests/unit/test_mediakit_smart_clips.py
@@ -577,12 +577,10 @@ class TestFromAssetsByTemplateSegments:
         assert exc_info.value.status_code == 400
         mock_plan_svc.replace_all_clips_transactional.assert_not_called()
 
-
     def test_empty_asset_ids_raises_400(self):
         """asset_ids 为空列表时返回 400（defense-in-depth，schema 层也有 min_length=1）。"""
-        from fastapi import HTTPException
-
         from app.api.routes.templates_editor.clips import create_clips_from_assets_editor
+        from fastapi import HTTPException
 
         segments = [(0, 3.0, 5.0)]
         mock_tpl_svc = _make_tpl_svc_with_segments(segments)