diff --git a/tests/unit/test_ai_client_image.py b/tests/unit/test_ai_client_image.py
index 6dd486f65..5c297d1b2 100644
--- a/tests/unit/test_ai_client_image.py
+++ b/tests/unit/test_ai_client_image.py
@@ -439,9 +439,7 @@ class TestTrustChainBranches:
         这里测 doubao 分支：信任链默认触发，验证 DashScope 分发路径不受影响。"""
         # 该测试实际覆盖 video_generation 入口的 dashscope 分发：缺 DASHSCOPE_API_KEY 时返回 auth_error
         client = _make_client()
-        with (
-            patch("packages.shared.ai_client.get_shared_settings") as ms,
-        ):
+        with (patch("packages.shared.ai_client.get_shared_settings") as ms,):
             ms.return_value = MagicMock(
                 doubao_video_poll_interval=0,
                 doubao_video_timeout=1,