diff --git a/tests/unit/test_generated_question_sub_pattern.py b/tests/unit/test_generated_question_sub_pattern.py
index c40feca..d240bbf 100644
--- a/tests/unit/test_generated_question_sub_pattern.py
+++ b/tests/unit/test_generated_question_sub_pattern.py
@@ -95,12 +95,18 @@ def test_append_to_json_writes_sub_pattern(tmp_path):
 def test_load_benchmark_restores_sub_pattern(tmp_path):
     from app.question_gen.loader import load_benchmark
     import json
+
     entry = {
-        "question_id": "v1_Action Recognition_0001", "video_id": "v1",
-        "task_type": "Action Recognition", "question": "?",
-        "options": ["A. 蒸", "B. 炒", "C. 煮", "D. 炸"], "answer": "A",
-        "source_nodes": ["n1"], "difficulty": "hard",
-        "family": "ACTION_RECOGNITION", "skill_target": "M1_AR",
+        "question_id": "v1_Action Recognition_0001",
+        "video_id": "v1",
+        "task_type": "Action Recognition",
+        "question": "?",
+        "options": ["A. 蒸", "B. 炒", "C. 煮", "D. 炸"],
+        "answer": "A",
+        "source_nodes": ["n1"],
+        "difficulty": "hard",
+        "family": "ACTION_RECOGNITION",
+        "skill_target": "M1_AR",
         "sub_pattern": "temporal_reasoning_failure",
     }
     (tmp_path / "v1.json").write_text(json.dumps([entry]), encoding="utf-8")
@@ -111,11 +117,16 @@ def test_load_benchmark_restores_sub_pattern(tmp_path):
 def test_load_benchmark_sub_pattern_defaults_none_when_absent(tmp_path):
     from app.question_gen.loader import load_benchmark
     import json
+
     entry = {
-        "question_id": "v1_Object Recognition_0001", "video_id": "v1",
-        "task_type": "Object Recognition", "question": "?",
-        "options": ["A. a", "B. b", "C. c", "D. d"], "answer": "A",
-        "source_nodes": ["n1"], "difficulty": "medium",
+        "question_id": "v1_Object Recognition_0001",
+        "video_id": "v1",
+        "task_type": "Object Recognition",
+        "question": "?",
+        "options": ["A. a", "B. b", "C. c", "D. d"],
+        "answer": "A",
+        "source_nodes": ["n1"],
+        "difficulty": "medium",
     }
     (tmp_path / "v1.json").write_text(json.dumps([entry]), encoding="utf-8")
     loaded = load_benchmark(tmp_path)