diff --git a/tests/test_four_phase_unit.py b/tests/test_four_phase_unit.py
index d7df249..a7ec99f 100644
--- a/tests/test_four_phase_unit.py
+++ b/tests/test_four_phase_unit.py
@@ -210,9 +210,9 @@ class TestU3RoundComplete:
         mock_spawner.api_host = "127.0.0.1"
         mock_spawner.api_port = 8083
         ticker = Ticker(registry=ProjectRegistry(Path("/tmp/fake")),
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
                         spawner=mock_spawner, dispatcher=MagicMock())
         # mock _build_review_prompt（f-string 在 Python 3.9 有兼容性问题）
+        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
 
         async def run():
             result = await ticker._check_round_complete(db_path, pid)
@@ -242,7 +242,6 @@ class TestU3RoundComplete:
 
         ticker = Ticker(registry=MagicMock(), spawner=MagicMock(),
                         dispatcher=MagicMock())
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
 
         async def run():
             return await ticker._check_round_complete(db_path, pid)
@@ -279,7 +278,6 @@ class TestU4RoundWithFailed:
         mock_spawner.api_host = "127.0.0.1"
         mock_spawner.api_port = 8083
         ticker = Ticker(registry=MagicMock(), spawner=mock_spawner,
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
                         dispatcher=MagicMock())
 
         async def run():
@@ -313,7 +311,6 @@ class TestU5RoundLimit:
 
         ticker = Ticker(registry=MagicMock(), spawner=MagicMock(),
                         dispatcher=MagicMock())
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
 
         async def run():
             return await ticker._check_round_complete(db_path, pid)
@@ -339,7 +336,6 @@ class TestU5RoundLimit:
         mock_spawner.api_host = "127.0.0.1"
         mock_spawner.api_port = 8083
         ticker = Ticker(registry=MagicMock(), spawner=mock_spawner,
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
                         dispatcher=MagicMock())
 
         async def run():
@@ -384,7 +380,6 @@ class TestU6MentionGrouping:
 
         ticker = Ticker(registry=MagicMock(), spawner=mock_spawner,
                         dispatcher=MagicMock())
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
 
         async def run():
             return await ticker._process_mentions(db_path, pid)
@@ -533,7 +528,6 @@ class TestU10ReviewPrompt:
         mock_spawner.api_host = "127.0.0.1"
         mock_spawner.api_port = 8083
         ticker = Ticker(registry=MagicMock(), spawner=mock_spawner)
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
 
         summary = {"done": 2, "failed": 1, "cancelled": 0, "total": 3}
         prompt = ticker._build_review_prompt(
@@ -557,7 +551,6 @@ class TestU10ReviewPrompt:
         mock_spawner.api_host = "127.0.0.1"
         mock_spawner.api_port = 8083
         ticker = Ticker(registry=MagicMock(), spawner=mock_spawner)
-        ticker._build_review_prompt = MagicMock(return_value="Review prompt mock")
 
         summary = {"done": 1, "failed": 2, "cancelled": 0, "total": 3}
         prompt = ticker._build_review_prompt(