diff --git a/tests/unit/test_path_security.py b/tests/unit/test_path_security.py
index 78bbebcaf..b388130c4 100755
--- a/tests/unit/test_path_security.py
+++ b/tests/unit/test_path_security.py
@@ -117,7 +117,8 @@ class TestSafeResolvePath(unittest.TestCase):
     def test_extension_whitelist_pass(self):
         """白名单内的扩展名应该通过."""
         result = safe_resolve_path(
-            "test.mp4", self.tmpdir,
+            "test.mp4",
+            self.tmpdir,
             allowed_extensions={".mp4", ".mov"},
         )
         self.assertEqual(result.suffix.lower(), ".mp4")
@@ -126,7 +127,8 @@ class TestSafeResolvePath(unittest.TestCase):
         """白名单外的扩展名应该被拒绝."""
         with self.assertRaises(PathSecurityError):
             safe_resolve_path(
-                "test.exe", self.tmpdir,
+                "test.exe",
+                self.tmpdir,
                 allowed_extensions={".mp4", ".mov"},
             )