diff --git a/tests/unit/test_cover_extract_frames.py b/tests/unit/test_cover_extract_frames.py
index 4813880d8..025fbbcb9 100644
--- a/tests/unit/test_cover_extract_frames.py
+++ b/tests/unit/test_cover_extract_frames.py
@@ -3,9 +3,11 @@
 1. Worker 渲染完成后提取封面帧写入 cover_url
 2. API 创建预览任务时自动关联 source_edit_plan_id
 """
+
 import pytest
-from packages.domain.generation_task import GenerationTask, GenerationTaskStatus
+
 from packages.application.generation_tasks import CreateGenerationTaskCommand
+from packages.domain.generation_task import GenerationTask, GenerationTaskStatus
 
 
 def _make_task(**kwargs):
@@ -126,10 +128,7 @@ class TestCoverRouteStepB:
             cover_url="https://oss.example.com/cover.jpg",
             status=GenerationTaskStatus.FAILED,
         )
-        is_valid = (
-            task.status == GenerationTaskStatus.COMPLETED
-            and bool(task.cover_url)
-        )
+        is_valid = task.status == GenerationTaskStatus.COMPLETED and bool(task.cover_url)
         assert is_valid is False
 
     def test_step_b_skips_tasks_without_cover_url(self):
@@ -139,8 +138,5 @@ class TestCoverRouteStepB:
             cover_url="",
             status=GenerationTaskStatus.COMPLETED,
         )
-        is_valid = (
-            task.status == GenerationTaskStatus.COMPLETED
-            and bool(task.cover_url)
-        )
+        is_valid = task.status == GenerationTaskStatus.COMPLETED and bool(task.cover_url)
         assert is_valid is False