diff --git a/tests/unit/test_generation_preview.py b/tests/unit/test_generation_preview.py
index 11b584146..fa64cf48f 100755
--- a/tests/unit/test_generation_preview.py
+++ b/tests/unit/test_generation_preview.py
@@ -1173,9 +1173,11 @@ class TestInferVideoRatioFromTemplate:
         mock_template.mode = "pip"
         mock_db = MagicMock()
 
-        with patch("app.api.routes.generation_preview.SQLAlchemyTemplateRepository") as MockRepo:
-            MockRepo.return_value.get_by_id.return_value = mock_template
-            result = _infer_video_ratio_from_template("tpl_001", mock_db)
+        with patch(
+            "app.api.routes.generation_preview.SQLAlchemyTemplateRepository"
+        ) as MockRepo:
+            MockRepo.return_value.get.return_value = mock_template
+            result = _infer_video_ratio_from_template("tpl_001", mock_db, "user_1")
         assert result == "9:16"
 
     def test_standard_mode_returns_16_9(self):
@@ -1186,9 +1188,11 @@ class TestInferVideoRatioFromTemplate:
         mock_template.mode = "standard"
         mock_db = MagicMock()
 
-        with patch("app.api.routes.generation_preview.SQLAlchemyTemplateRepository") as MockRepo:
-            MockRepo.return_value.get_by_id.return_value = mock_template
-            result = _infer_video_ratio_from_template("tpl_001", mock_db)
+        with patch(
+            "app.api.routes.generation_preview.SQLAlchemyTemplateRepository"
+        ) as MockRepo:
+            MockRepo.return_value.get.return_value = mock_template
+            result = _infer_video_ratio_from_template("tpl_001", mock_db, "user_1")
         assert result == "16:9"
 
     def test_unknown_mode_returns_empty(self):
@@ -1199,9 +1203,11 @@ class TestInferVideoRatioFromTemplate:
         mock_template.mode = "unknown_mode"
         mock_db = MagicMock()
 
-        with patch("app.api.routes.generation_preview.SQLAlchemyTemplateRepository") as MockRepo:
-            MockRepo.return_value.get_by_id.return_value = mock_template
-            result = _infer_video_ratio_from_template("tpl_001", mock_db)
+        with patch(
+            "app.api.routes.generation_preview.SQLAlchemyTemplateRepository"
+        ) as MockRepo:
+            MockRepo.return_value.get.return_value = mock_template
+            result = _infer_video_ratio_from_template("tpl_001", mock_db, "user_1")
         assert result == ""
 
     def test_template_not_found_returns_empty(self):
@@ -1210,9 +1216,11 @@ class TestInferVideoRatioFromTemplate:
 
         mock_db = MagicMock()
 
-        with patch("app.api.routes.generation_preview.SQLAlchemyTemplateRepository") as MockRepo:
-            MockRepo.return_value.get_by_id.return_value = None
-            result = _infer_video_ratio_from_template("nonexistent", mock_db)
+        with patch(
+            "app.api.routes.generation_preview.SQLAlchemyTemplateRepository"
+        ) as MockRepo:
+            MockRepo.return_value.get.return_value = None
+            result = _infer_video_ratio_from_template("nonexistent", mock_db, "user_1")
         assert result == ""
 
     def test_empty_template_id_returns_empty(self):
@@ -1220,7 +1228,7 @@ class TestInferVideoRatioFromTemplate:
         from app.api.routes.generation_preview import _infer_video_ratio_from_template
 
         mock_db = MagicMock()
-        result = _infer_video_ratio_from_template("", mock_db)
+        result = _infer_video_ratio_from_template("", mock_db, "user_1")
         assert result == ""
 
     def test_db_exception_returns_empty(self):
@@ -1229,9 +1237,11 @@ class TestInferVideoRatioFromTemplate:
 
         mock_db = MagicMock()
 
-        with patch("app.api.routes.generation_preview.SQLAlchemyTemplateRepository") as MockRepo:
+        with patch(
+            "app.api.routes.generation_preview.SQLAlchemyTemplateRepository"
+        ) as MockRepo:
             MockRepo.side_effect = Exception("db connection error")
-            result = _infer_video_ratio_from_template("tpl_001", mock_db)
+            result = _infer_video_ratio_from_template("tpl_001", mock_db, "user_1")
         assert result == ""
 
 
@@ -1264,9 +1274,13 @@ class TestPreviewRouteAutoInfersVideoRatio:
             bgm_config={},
         )
 
-        with patch("app.api.routes.generation_preview.SQLAlchemyTemplateRepository") as MockRepo:
-            MockRepo.return_value.get_by_id.return_value = mock_template
-            with patch("app.api.routes.generation_preview.CreateGenerationTaskUseCase") as MockUC:
+        with patch(
+            "app.api.routes.generation_preview.SQLAlchemyTemplateRepository"
+        ) as MockRepo:
+            MockRepo.return_value.get.return_value = mock_template
+            with patch(
+                "app.api.routes.generation_preview.CreateGenerationTaskUseCase"
+            ) as MockUC:
                 MockUC.return_value.execute.return_value = task
                 with patch(
                     "app.api.routes.generation_preview.safe_enqueue_generation_task",