test: format test suite (#2252)

tests/unit_tests/api/__init__.py

@@ -1 +1 @@
-"""Unit tests for LangBot API HTTP service layer."""
+"""Unit tests for LangBot API HTTP service layer."""

tests/unit_tests/api/service/__init__.py

@@ -13,4 +13,4 @@ Does NOT:
 - Call real provider/platform/network
 
 Uses tests.factories.FakeApp as base mock application.
-"""
+"""

tests/unit_tests/api/service/test_apikey_service.py

@@ -132,9 +132,7 @@ class TestApiKeyServiceCreateApiKey:
         with patch('langbot.pkg.api.http.service.apikey.secrets.token_urlsafe', return_value='fixed-token'):
             result = await service.create_api_key('New Key', 'Test description')
 
-        assert insert_params == [
-            {'name': 'New Key', 'key': 'lbk_fixed-token', 'description': 'Test description'}
-        ]
+        assert insert_params == [{'name': 'New Key', 'key': 'lbk_fixed-token', 'description': 'Test description'}]
         assert result['key'].startswith('lbk_')
         assert result['key'] == 'lbk_fixed-token'
         assert result['name'] == 'New Key'

tests/unit_tests/api/service/test_bot_service.py

@@ -303,13 +303,7 @@ class TestBotServiceCreateBot:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_bots': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_bots': 2}}}
         ap.platform_mgr = SimpleNamespace()
         ap.platform_mgr.load_bot = AsyncMock()
 
@@ -318,9 +312,7 @@ class TestBotServiceCreateBot:
         bot2 = _create_mock_bot(bot_uuid='uuid-2')
         mock_result = _create_mock_result([bot1, bot2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'uuid-1', 'name': 'Bot 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'uuid-1', 'name': 'Bot 1'})
 
         service = BotService(ap)
 
@@ -352,6 +344,7 @@ class TestBotServiceCreateBot:
         bot_result.first = Mock(return_value=_create_mock_bot())
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -362,9 +355,7 @@ class TestBotServiceCreateBot:
             return bot_result  # Get bot
 
         ap.persistence_mgr.execute_async = AsyncMock(side_effect=mock_execute)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'new-uuid', 'name': 'New Bot'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'new-uuid', 'name': 'New Bot'})
 
         service = BotService(ap)
 
@@ -397,6 +388,7 @@ class TestBotServiceCreateBot:
         bot_result.first = Mock(return_value=_create_mock_bot())
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -492,6 +484,7 @@ class TestBotServiceUpdateBot:
         pipeline_result.first = Mock(return_value=mock_pipeline)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -582,10 +575,9 @@ class TestBotServiceListEventLogs:
         # Mock runtime bot with logger
         runtime_bot = SimpleNamespace()
         runtime_bot.logger = SimpleNamespace()
-        runtime_bot.logger.get_logs = AsyncMock(return_value=(
-            [SimpleNamespace(to_json=Mock(return_value={'msg': 'log1'}))],
-            5
-        ))
+        runtime_bot.logger.get_logs = AsyncMock(
+            return_value=([SimpleNamespace(to_json=Mock(return_value={'msg': 'log1'}))], 5)
+        )
         ap.platform_mgr.get_bot_by_uuid = AsyncMock(return_value=runtime_bot)
 
         service = BotService(ap)
@@ -646,11 +638,7 @@ class TestBotServiceSendMessage:
         service = BotService(ap)
 
         # Execute with valid message chain format
-        message_chain_data = {
-            'messages': [
-                {'type': 'text', 'data': {'text': 'Hello'}}
-            ]
-        }
+        message_chain_data = {'messages': [{'type': 'text', 'data': {'text': 'Hello'}}]}
 
         # Patch the import location - the module imports inside the function
         with patch('langbot_plugin.api.entities.builtin.platform.message.MessageChain') as MockMessageChain:

tests/unit_tests/api/service/test_knowledge_service.py

@@ -6,6 +6,7 @@ Tests cover:
 - Knowledge engine discovery
 - File operations
 """
+
 from __future__ import annotations
 
 import pytest
@@ -52,9 +53,7 @@ class TestGetKnowledgeBases:
         """Test that it returns all knowledge base details."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.rag_mgr.get_all_knowledge_base_details = AsyncMock(
-            return_value=[{'uuid': 'kb1', 'name': 'KB1'}]
-        )
+        mock_app.rag_mgr.get_all_knowledge_base_details = AsyncMock(return_value=[{'uuid': 'kb1', 'name': 'KB1'}])
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.get_knowledge_bases()
@@ -83,9 +82,7 @@ class TestGetKnowledgeBase:
         """Test that it returns specific KB details."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(
-            return_value={'uuid': 'kb1', 'name': 'KB1'}
-        )
+        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(return_value={'uuid': 'kb1', 'name': 'KB1'})
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.get_knowledge_base('kb1')
@@ -153,9 +150,7 @@ class TestCreateKnowledgeBase:
 
         service = knowledge_module.KnowledgeService(mock_app)
 
-        await service.create_knowledge_base({
-            'knowledge_engine_plugin_id': 'author/engine'
-        })
+        await service.create_knowledge_base({'knowledge_engine_plugin_id': 'author/engine'})
 
         # Check that default name 'Untitled' was used
         call_args = mock_app.rag_mgr.create_knowledge_base.call_args
@@ -170,20 +165,21 @@ class TestUpdateKnowledgeBase:
         """Test that only mutable fields are updated."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(
-            return_value={'uuid': 'kb1', 'name': 'Updated'}
-        )
+        mock_app.rag_mgr.get_knowledge_base_details = AsyncMock(return_value={'uuid': 'kb1', 'name': 'Updated'})
         mock_app.rag_mgr.remove_knowledge_base_from_runtime = AsyncMock()
         mock_app.rag_mgr.load_knowledge_base = AsyncMock()
 
         service = knowledge_module.KnowledgeService(mock_app)
 
         # Pass both mutable and immutable fields
-        await service.update_knowledge_base('kb1', {
-            'name': 'New Name',
-            'description': 'New desc',
-            'uuid': 'should_be_filtered',  # immutable
-        })
+        await service.update_knowledge_base(
+            'kb1',
+            {
+                'name': 'New Name',
+                'description': 'New desc',
+                'uuid': 'should_be_filtered',  # immutable
+            },
+        )
 
         # Check that only mutable fields were passed to update
         call_args = mock_app.persistence_mgr.execute_async.call_args
@@ -288,9 +284,7 @@ class TestListKnowledgeEngines:
         """Test that it returns empty list and logs warning on exception."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(
-            side_effect=Exception('Connection error')
-        )
+        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(side_effect=Exception('Connection error'))
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.list_knowledge_engines()
@@ -386,12 +380,10 @@ class TestGetEngineSchemas:
         """Test that it returns empty dict and logs warning on exception."""
         knowledge_module = get_knowledge_service_module()
         mock_app = create_mock_app()
-        mock_app.plugin_connector.get_rag_creation_schema = AsyncMock(
-            side_effect=Exception('Plugin error')
-        )
+        mock_app.plugin_connector.get_rag_creation_schema = AsyncMock(side_effect=Exception('Plugin error'))
 
         service = knowledge_module.KnowledgeService(mock_app)
         result = await service.get_engine_creation_schema('author/engine')
 
         assert result == {}
-        mock_app.logger.warning.assert_called_once()
+        mock_app.logger.warning.assert_called_once()

tests/unit_tests/api/service/test_maintenance_service.py

@@ -174,9 +174,7 @@ class TestMaintenanceServiceGetStorageAnalysis:
         # Setup
         ap = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'database': {'use': 'sqlite', 'sqlite': {'path': 'data/langbot.db'}}
-        }
+        ap.instance_config.data = {'database': {'use': 'sqlite', 'sqlite': {'path': 'data/langbot.db'}}}
         ap.persistence_mgr = SimpleNamespace()
         ap.logger = SimpleNamespace()
         ap.logger.warning = Mock()
@@ -292,12 +290,8 @@ class TestMaintenanceServiceGetStorageAnalysis:
         service._file_count = Mock(return_value=0)
         service._monitoring_counts = AsyncMock(return_value={})
         service._binary_storage_stats = AsyncMock(return_value={'count': 0, 'size_bytes': 0})
-        service._expired_uploaded_candidates = AsyncMock(return_value=[
-            {'key': 'old_file', 'size_bytes': 100}
-        ])
-        service._expired_log_candidates = Mock(return_value=[
-            {'name': 'old_log', 'size_bytes': 50}
-        ])
+        service._expired_uploaded_candidates = AsyncMock(return_value=[{'key': 'old_file', 'size_bytes': 100}])
+        service._expired_log_candidates = Mock(return_value=[{'name': 'old_log', 'size_bytes': 50}])
 
         # Execute
         result = await service.get_storage_analysis()
@@ -367,6 +361,7 @@ class TestMaintenanceServiceBinaryStorageStats:
         size_result = _create_mock_result(scalar_value=5000)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -396,6 +391,7 @@ class TestMaintenanceServiceBinaryStorageStats:
         count_result = _create_mock_result(scalar_value=5)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -821,4 +817,4 @@ class TestMaintenanceServiceExpiredLocalUploadCandidates:
                 result = service._expired_local_upload_candidates(7, include_paths=True)
 
         # Verify - path included
-        assert 'path' in result[0]
+        assert 'path' in result[0]

tests/unit_tests/api/service/test_mcp_service.py

@@ -186,13 +186,7 @@ class TestMCPServiceCreateMCPServer:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_extensions': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_extensions': 2}}}
         ap.plugin_connector = SimpleNamespace()
         ap.plugin_connector.list_plugins = AsyncMock(return_value=[Mock(), Mock()])  # 2 plugins
 
@@ -252,6 +246,7 @@ class TestMCPServiceCreateMCPServer:
         server_entity = _create_mock_mcp_server(server_uuid='new-uuid', enable=True)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -361,6 +356,7 @@ class TestMCPServiceUpdateMCPServer:
         old_server = _create_mock_mcp_server(name='Old Server', enable=True)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -394,6 +390,7 @@ class TestMCPServiceUpdateMCPServer:
         updated_server = _create_mock_mcp_server(name='Old Server', enable=True)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -432,6 +429,7 @@ class TestMCPServiceUpdateMCPServer:
 
         # Mock for: first select -> update -> second select (for updated server)
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -465,6 +463,7 @@ class TestMCPServiceUpdateMCPServer:
 
         # Mock execute for select and update
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -499,6 +498,7 @@ class TestMCPServiceDeleteMCPServer:
         server = _create_mock_mcp_server(name='Server to Delete')
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -530,6 +530,7 @@ class TestMCPServiceDeleteMCPServer:
         server = _create_mock_mcp_server(name='Not in Sessions')
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -559,6 +560,7 @@ class TestMCPServiceDeleteMCPServer:
 
         # No server found
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -596,9 +598,7 @@ class TestMCPServiceTestMCPServer:
         ap.tool_mgr.mcp_tool_loader.get_session = Mock(return_value=mock_session)
 
         ap.task_mgr = SimpleNamespace()
-        ap.task_mgr.create_user_task = Mock(
-            return_value=SimpleNamespace(id=123)
-        )
+        ap.task_mgr.create_user_task = Mock(return_value=SimpleNamespace(id=123))
 
         service = MCPService(ap)
 
@@ -634,9 +634,7 @@ class TestMCPServiceTestMCPServer:
         ap.tool_mgr.mcp_tool_loader.load_mcp_server = AsyncMock(return_value=mock_session)
 
         ap.task_mgr = SimpleNamespace()
-        ap.task_mgr.create_user_task = Mock(
-            return_value=SimpleNamespace(id=456)
-        )
+        ap.task_mgr.create_user_task = Mock(return_value=SimpleNamespace(id=456))
 
         service = MCPService(ap)
 
@@ -645,4 +643,4 @@ class TestMCPServiceTestMCPServer:
 
         # Verify - load_mcp_server called
         ap.tool_mgr.mcp_tool_loader.load_mcp_server.assert_called_once()
-        assert task_id == 456
+        assert task_id == 456

tests/unit_tests/api/service/test_model_service.py

@@ -167,6 +167,7 @@ class TestLLMModelsServiceGetLLMModels:
         mock_provider_result = _create_mock_result([])
 
         call_count = 0
+
         async def mock_execute(query):
             return mock_result if call_count == 0 else mock_provider_result
 
@@ -200,6 +201,7 @@ class TestLLMModelsServiceGetLLMModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -239,6 +241,7 @@ class TestLLMModelsServiceGetLLMModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -279,6 +282,7 @@ class TestLLMModelsServiceGetLLMModel:
         mock_provider_result = _create_mock_result([], first_item=provider)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -337,9 +341,7 @@ class TestLLMModelsServiceGetLLMModelsByProvider:
 
         mock_result = _create_mock_result([model1, model2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'model-1', 'name': 'Model 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'model-1', 'name': 'Model 1'})
 
         service = LLMModelsService(ap)
 
@@ -371,12 +373,14 @@ class TestLLMModelsServiceCreateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_llm_model({
-            'name': 'New LLM',
-            'provider_uuid': 'provider-uuid',
-            'abilities': [],
-            'extra_args': {},
-        })
+        model_uuid = await service.create_llm_model(
+            {
+                'name': 'New LLM',
+                'provider_uuid': 'provider-uuid',
+                'abilities': [],
+                'extra_args': {},
+            }
+        )
 
         # Verify
         assert model_uuid is not None
@@ -400,13 +404,16 @@ class TestLLMModelsServiceCreateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_llm_model({
-            'uuid': 'preserved-uuid',
-            'name': 'Preserved UUID Model',
-            'provider_uuid': 'provider-uuid',
-            'abilities': [],
-            'extra_args': {},
-        }, preserve_uuid=True)
+        model_uuid = await service.create_llm_model(
+            {
+                'uuid': 'preserved-uuid',
+                'name': 'Preserved UUID Model',
+                'provider_uuid': 'provider-uuid',
+                'abilities': [],
+                'extra_args': {},
+            },
+            preserve_uuid=True,
+        )
 
         # Verify
         assert model_uuid == 'preserved-uuid'
@@ -459,12 +466,14 @@ class TestLLMModelsServiceCreateLLMModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.create_llm_model({
-                'name': 'No Provider Model',
-                'provider_uuid': 'nonexistent-provider',
-                'abilities': [],
-                'extra_args': {},
-            })
+            await service.create_llm_model(
+                {
+                    'name': 'No Provider Model',
+                    'provider_uuid': 'nonexistent-provider',
+                    'abilities': [],
+                    'extra_args': {},
+                }
+            )
 
     async def test_create_llm_model_with_provider_data(self):
         """Creates provider when provider data provided."""
@@ -490,16 +499,18 @@ class TestLLMModelsServiceCreateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute - with provider data (no UUID)
-        result_uuid = await service.create_llm_model({
-            'name': 'Model with New Provider',
-            'provider': {
-                'requester': 'openai',
-                'base_url': 'https://api.openai.com',
-                'api_keys': ['key'],
-            },
-            'abilities': [],
-            'extra_args': {},
-        })
+        result_uuid = await service.create_llm_model(
+            {
+                'name': 'Model with New Provider',
+                'provider': {
+                    'requester': 'openai',
+                    'base_url': 'https://api.openai.com',
+                    'api_keys': ['key'],
+                },
+                'abilities': [],
+                'extra_args': {},
+            }
+        )
 
         # Verify - provider_service was called and UUID generated
         ap.provider_service.find_or_create_provider.assert_called_once()
@@ -525,11 +536,14 @@ class TestLLMModelsServiceUpdateLLMModel:
         service = LLMModelsService(ap)
 
         # Execute
-        await service.update_llm_model('existing-uuid', {
-            'uuid': 'should-be-removed',
-            'name': 'Updated Name',
-            'provider_uuid': 'provider-uuid',
-        })
+        await service.update_llm_model(
+            'existing-uuid',
+            {
+                'uuid': 'should-be-removed',
+                'name': 'Updated Name',
+                'provider_uuid': 'provider-uuid',
+            },
+        )
 
         # Verify - remove and load called
         ap.model_mgr.remove_llm_model.assert_called_once_with('existing-uuid')
@@ -549,10 +563,13 @@ class TestLLMModelsServiceUpdateLLMModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.update_llm_model('model-uuid', {
-                'name': 'Update',
-                'provider_uuid': 'nonexistent-provider',
-            })
+            await service.update_llm_model(
+                'model-uuid',
+                {
+                    'name': 'Update',
+                    'provider_uuid': 'nonexistent-provider',
+                },
+            )
 
     async def test_update_llm_model_reloads_context_length_as_column(self):
         """Updates runtime model with context_length outside extra_args."""
@@ -618,9 +635,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModels:
 
         mock_result = _create_mock_result([])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'embedding-uuid', 'name': 'Test'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'embedding-uuid', 'name': 'Test'})
 
         service = EmbeddingModelsService(ap)
 
@@ -643,6 +658,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -683,6 +699,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModel:
         mock_provider_result = _create_mock_result([], first_item=provider)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -742,11 +759,13 @@ class TestEmbeddingModelsServiceCreateEmbeddingModel:
         service = EmbeddingModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_embedding_model({
-            'name': 'New Embedding',
-            'provider_uuid': 'provider-uuid',
-            'extra_args': {},
-        })
+        model_uuid = await service.create_embedding_model(
+            {
+                'name': 'New Embedding',
+                'provider_uuid': 'provider-uuid',
+                'extra_args': {},
+            }
+        )
 
         # Verify
         assert model_uuid is not None
@@ -767,11 +786,13 @@ class TestEmbeddingModelsServiceCreateEmbeddingModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.create_embedding_model({
-                'name': 'No Provider Embedding',
-                'provider_uuid': 'nonexistent',
-                'extra_args': {},
-            })
+            await service.create_embedding_model(
+                {
+                    'name': 'No Provider Embedding',
+                    'provider_uuid': 'nonexistent',
+                    'extra_args': {},
+                }
+            )
 
 
 class TestEmbeddingModelsServiceDeleteEmbeddingModel:
@@ -829,6 +850,7 @@ class TestRerankModelsServiceGetRerankModels:
         mock_provider_result = _create_mock_result([provider])
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -869,6 +891,7 @@ class TestRerankModelsServiceGetRerankModel:
         mock_provider_result = _create_mock_result([], first_item=provider)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -928,11 +951,13 @@ class TestRerankModelsServiceCreateRerankModel:
         service = RerankModelsService(ap)
 
         # Execute
-        model_uuid = await service.create_rerank_model({
-            'name': 'New Rerank',
-            'provider_uuid': 'provider-uuid',
-            'extra_args': {},
-        })
+        model_uuid = await service.create_rerank_model(
+            {
+                'name': 'New Rerank',
+                'provider_uuid': 'provider-uuid',
+                'extra_args': {},
+            }
+        )
 
         # Verify
         assert model_uuid is not None
@@ -952,11 +977,13 @@ class TestRerankModelsServiceCreateRerankModel:
 
         # Execute & Verify
         with pytest.raises(Exception, match='provider not found'):
-            await service.create_rerank_model({
-                'name': 'No Provider Rerank',
-                'provider_uuid': 'nonexistent',
-                'extra_args': {},
-            })
+            await service.create_rerank_model(
+                {
+                    'name': 'No Provider Rerank',
+                    'provider_uuid': 'nonexistent',
+                    'extra_args': {},
+                }
+            )
 
 
 class TestRerankModelsServiceDeleteRerankModel:
@@ -995,9 +1022,7 @@ class TestEmbeddingModelsServiceGetEmbeddingModelsByProvider:
 
         mock_result = _create_mock_result([model1, model2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'emb-1', 'name': 'Embedding 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'emb-1', 'name': 'Embedding 1'})
 
         service = EmbeddingModelsService(ap)
 
@@ -1022,9 +1047,7 @@ class TestRerankModelsServiceGetRerankModelsByProvider:
 
         mock_result = _create_mock_result([model1, model2])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'rerank-1', 'name': 'Rerank 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'rerank-1', 'name': 'Rerank 1'})
 
         service = RerankModelsService(ap)
 
@@ -1042,14 +1065,10 @@ class TestValidateProviderSupports:
     def _make_ap(requester_name: str, support_type):
         """Build a fake ap whose model_mgr resolves a manifest with support_type."""
         manifest = SimpleNamespace(spec={'support_type': support_type})
-        runtime_provider = SimpleNamespace(
-            provider_entity=SimpleNamespace(requester=requester_name)
-        )
+        runtime_provider = SimpleNamespace(provider_entity=SimpleNamespace(requester=requester_name))
         model_mgr = SimpleNamespace(
             provider_dict={'p1': runtime_provider},
-            get_available_requester_manifest_by_name=lambda name: manifest
-            if name == requester_name
-            else None,
+            get_available_requester_manifest_by_name=lambda name: manifest if name == requester_name else None,
         )
         return SimpleNamespace(model_mgr=model_mgr)
 
@@ -1066,9 +1085,7 @@ class TestValidateProviderSupports:
     async def test_allows_when_support_type_missing(self):
         # Manifest without support_type must not block (backward compatible)
         manifest = SimpleNamespace(spec={})
-        runtime_provider = SimpleNamespace(
-            provider_entity=SimpleNamespace(requester='legacy')
-        )
+        runtime_provider = SimpleNamespace(provider_entity=SimpleNamespace(requester='legacy'))
         model_mgr = SimpleNamespace(
             provider_dict={'p1': runtime_provider},
             get_available_requester_manifest_by_name=lambda name: manifest,

tests/unit_tests/api/service/test_pipeline_service.py

@@ -215,13 +215,7 @@ class TestPipelineServiceCreatePipeline:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_pipelines': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_pipelines': 2}}}
         ap.pipeline_mgr = SimpleNamespace()
         ap.pipeline_mgr.load_pipeline = AsyncMock()
         ap.ver_mgr = SimpleNamespace()
@@ -229,9 +223,7 @@ class TestPipelineServiceCreatePipeline:
 
         mock_result = _create_mock_result([_create_mock_pipeline(), _create_mock_pipeline()])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=mock_result)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'uuid-1', 'name': 'Pipeline 1'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'uuid-1', 'name': 'Pipeline 1'})
 
         service = PipelineService(ap)
 
@@ -258,14 +250,14 @@ class TestPipelineServiceCreatePipeline:
 
         # Mock persistence for insert
         ap.persistence_mgr.execute_async = AsyncMock()
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'new-uuid', 'name': 'New Pipeline'}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'new-uuid', 'name': 'New Pipeline'})
 
         # Mock the file read for default config - patch at the utils module level
         default_config = {'trigger': {}, 'safety': {}, 'ai': {}, 'output': {}}
         with patch('builtins.open', mock_open(read_data=json.dumps(default_config))):
-            with patch('langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'):
+            with patch(
+                'langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'
+            ):
                 bot_uuid = await service.create_pipeline({'name': 'New Pipeline'})
 
         # Verify
@@ -286,7 +278,9 @@ class TestPipelineServiceCreatePipeline:
 
         service = PipelineService(ap)
         service.get_pipelines = AsyncMock(return_value=[])
-        service.get_pipeline = AsyncMock(return_value={'uuid': 'new-uuid', 'name': 'Default Pipeline', 'is_default': True})
+        service.get_pipeline = AsyncMock(
+            return_value={'uuid': 'new-uuid', 'name': 'Default Pipeline', 'is_default': True}
+        )
 
         ap.persistence_mgr.execute_async = AsyncMock()
         ap.persistence_mgr.serialize_model = Mock(
@@ -296,7 +290,9 @@ class TestPipelineServiceCreatePipeline:
         # Mock the file read
         default_config = {}
         with patch('builtins.open', mock_open(read_data=json.dumps(default_config))):
-            with patch('langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'):
+            with patch(
+                'langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'
+            ):
                 await service.create_pipeline({'name': 'Default Pipeline'}, default=True)
 
         # Verify - execute was called
@@ -316,10 +312,12 @@ class TestPipelineServiceCreatePipeline:
 
         service = PipelineService(ap)
         service.get_pipelines = AsyncMock(return_value=[])
-        service.get_pipeline = AsyncMock(return_value={
-            'uuid': 'new-uuid',
-            'extensions_preferences': {},
-        })
+        service.get_pipeline = AsyncMock(
+            return_value={
+                'uuid': 'new-uuid',
+                'extensions_preferences': {},
+            }
+        )
 
         insert_params = []
 
@@ -339,7 +337,9 @@ class TestPipelineServiceCreatePipeline:
 
         default_config = {}
         with patch('builtins.open', mock_open(read_data=json.dumps(default_config))):
-            with patch('langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'):
+            with patch(
+                'langbot.pkg.utils.paths.get_resource_path', return_value='templates/default-pipeline-config.json'
+            ):
                 await service.create_pipeline({'name': 'New Pipeline'})
 
         assert len(insert_params) == 1
@@ -353,6 +353,7 @@ class TestPipelineServiceCreatePipeline:
 
 class _MockResultWithBots:
     """Helper class to mock SQLAlchemy result with iterable .all() method."""
+
     def __init__(self, bots_list):
         self._bots_list = bots_list
 
@@ -428,6 +429,7 @@ class TestPipelineServiceUpdatePipeline:
         # 1. UPDATE (line 125) - returns Mock (no result needed)
         # 2. SELECT bots (line 136) - returns bot_result with .all()
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -528,13 +530,7 @@ class TestPipelineServiceCopyPipeline:
         ap = SimpleNamespace()
         ap.persistence_mgr = SimpleNamespace()
         ap.instance_config = SimpleNamespace()
-        ap.instance_config.data = {
-            'system': {
-                'limitation': {
-                    'max_pipelines': 2
-                }
-            }
-        }
+        ap.instance_config.data = {'system': {'limitation': {'max_pipelines': 2}}}
         ap.pipeline_mgr = SimpleNamespace()
         ap.pipeline_mgr.load_pipeline = AsyncMock()
         ap.ver_mgr = SimpleNamespace()
@@ -542,10 +538,12 @@ class TestPipelineServiceCopyPipeline:
 
         service = PipelineService(ap)
         # Mock get_pipelines to return 2 pipelines
-        service.get_pipelines = AsyncMock(return_value=[
-            {'uuid': 'uuid-1', 'name': 'Pipeline 1'},
-            {'uuid': 'uuid-2', 'name': 'Pipeline 2'},
-        ])
+        service.get_pipelines = AsyncMock(
+            return_value=[
+                {'uuid': 'uuid-1', 'name': 'Pipeline 1'},
+                {'uuid': 'uuid-2', 'name': 'Pipeline 2'},
+            ]
+        )
 
         # Execute & Verify
         with pytest.raises(ValueError, match='Maximum number of pipelines'):
@@ -642,9 +640,7 @@ class TestPipelineServiceCopyPipeline:
         service = PipelineService(ap)
         service.get_pipelines = AsyncMock(return_value=[])
         ap.persistence_mgr.execute_async = AsyncMock(return_value=_create_mock_result(first_item=original))
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'uuid': 'copy-uuid', 'is_default': False}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'uuid': 'copy-uuid', 'is_default': False})
 
         service.get_pipeline = AsyncMock(return_value={'uuid': 'copy-uuid', 'is_default': False})
 
@@ -681,11 +677,10 @@ class TestPipelineServiceUpdatePipelineExtensions:
         ap.pipeline_mgr.remove_pipeline = AsyncMock()
         ap.pipeline_mgr.load_pipeline = AsyncMock()
 
-        original_pipeline = _create_mock_pipeline(
-            extensions_preferences={'enable_all_plugins': True, 'plugins': []}
-        )
+        original_pipeline = _create_mock_pipeline(extensions_preferences={'enable_all_plugins': True, 'plugins': []})
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -700,7 +695,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
                 'extensions_preferences': {
                     'enable_all_plugins': False,
                     'plugins': [{'plugin_uuid': 'plugin-1'}],
-                }
+                },
             }
         )
 
@@ -711,7 +706,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
                 'extensions_preferences': {
                     'enable_all_plugins': False,
                     'plugins': [{'plugin_uuid': 'plugin-1'}],
-                }
+                },
             }
         )
 
@@ -738,6 +733,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
         original_pipeline = _create_mock_pipeline()
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -752,7 +748,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
                 'extensions_preferences': {
                     'enable_all_mcp_servers': False,
                     'mcp_servers': ['mcp-server-1'],
-                }
+                },
             }
         )
 
@@ -794,6 +790,7 @@ class TestPipelineServiceUpdatePipelineExtensions:
         )
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1

tests/unit_tests/api/service/test_provider_service.py

@@ -245,12 +245,14 @@ class TestModelProviderServiceCreateProvider:
         service = ModelProviderService(ap)
 
         # Execute
-        provider_uuid = await service.create_provider({
-            'name': 'New Provider',
-            'requester': 'openai',
-            'base_url': 'https://api.openai.com',
-            'api_keys': ['key'],
-        })
+        provider_uuid = await service.create_provider(
+            {
+                'name': 'New Provider',
+                'requester': 'openai',
+                'base_url': 'https://api.openai.com',
+                'api_keys': ['key'],
+            }
+        )
 
         # Verify - UUID is generated
         assert provider_uuid is not None
@@ -274,12 +276,14 @@ class TestModelProviderServiceCreateProvider:
         service = ModelProviderService(ap)
 
         # Execute
-        result_uuid = await service.create_provider({
-            'name': 'Runtime Provider',
-            'requester': 'openai',
-            'base_url': 'https://api.openai.com',
-            'api_keys': ['key'],
-        })
+        result_uuid = await service.create_provider(
+            {
+                'name': 'Runtime Provider',
+                'requester': 'openai',
+                'base_url': 'https://api.openai.com',
+                'api_keys': ['key'],
+            }
+        )
 
         # Verify - provider added to runtime dict and UUID generated
         ap.model_mgr.load_provider.assert_called_once()
@@ -302,10 +306,13 @@ class TestModelProviderServiceUpdateProvider:
         service = ModelProviderService(ap)
 
         # Execute
-        await service.update_provider('existing-uuid', {
-            'uuid': 'should-be-removed',  # Will be removed
-            'name': 'Updated Name',
-        })
+        await service.update_provider(
+            'existing-uuid',
+            {
+                'uuid': 'should-be-removed',  # Will be removed
+                'name': 'Updated Name',
+            },
+        )
 
         # Verify - reload called
         ap.model_mgr.reload_provider.assert_called_once_with('existing-uuid')
@@ -364,6 +371,7 @@ class TestModelProviderServiceDeleteProvider:
         rerank_result.first = Mock(return_value=None)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -396,6 +404,7 @@ class TestModelProviderServiceDeleteProvider:
         rerank_result.first = Mock(return_value=Mock(spec=RerankModel))  # Has rerank model
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -454,6 +463,7 @@ class TestModelProviderServiceGetProviderModelCounts:
         rerank_result.scalar = Mock(return_value=1)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -637,9 +647,7 @@ class TestModelProviderServiceUpdateSpaceModelProviderApiKeys:
         await service.update_space_model_provider_api_keys('space-api-key')
 
         # Verify - update and reload called for Space provider UUID
-        ap.model_mgr.reload_provider.assert_called_once_with(
-            '00000000-0000-0000-0000-000000000000'
-        )
+        ap.model_mgr.reload_provider.assert_called_once_with('00000000-0000-0000-0000-000000000000')
 
 
 class TestModelProviderServiceScanProviderModels:
@@ -795,9 +803,7 @@ class TestModelProviderServiceScanProviderModels:
         runtime_provider.token_mgr = Mock()
         runtime_provider.token_mgr.get_token = Mock(return_value='token')
         runtime_provider.token_mgr.tokens = ['token']
-        runtime_provider.requester.scan_models = AsyncMock(
-            side_effect=NotImplementedError('scan not supported')
-        )
+        runtime_provider.requester.scan_models = AsyncMock(side_effect=NotImplementedError('scan not supported'))
         ap.model_mgr.load_provider = AsyncMock(return_value=runtime_provider)
 
         service = ModelProviderService(ap)
@@ -848,9 +854,7 @@ class TestModelProviderServiceScanProviderModels:
         ap.model_mgr.load_provider = AsyncMock(return_value=runtime_provider)
 
         # Mock existing LLM model
-        ap.llm_model_service.get_llm_models_by_provider = AsyncMock(
-            return_value=[{'name': 'Existing Model'}]
-        )
+        ap.llm_model_service.get_llm_models_by_provider = AsyncMock(return_value=[{'name': 'Existing Model'}])
         ap.embedding_models_service.get_embedding_models_by_provider = AsyncMock(return_value=[])
 
         service = ModelProviderService(ap)
@@ -863,4 +867,4 @@ class TestModelProviderServiceScanProviderModels:
         assert existing_model['already_added'] is True
 
         new_model = next(m for m in result['models'] if m['name'] == 'New Model')
-        assert new_model['already_added'] is False
+        assert new_model['already_added'] is False

tests/unit_tests/api/service/test_space_service.py

@@ -393,14 +393,16 @@ class TestSpaceServiceRefreshToken:
         # Mock HTTP response
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'access_token': 'new_access_token',
-                'refresh_token': 'new_refresh_token',
-                'expires_in': 3600,
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'access_token': 'new_access_token',
+                    'refresh_token': 'new_refresh_token',
+                    'expires_in': 3600,
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -429,10 +431,12 @@ class TestSpaceServiceRefreshToken:
         # Mock HTTP response with error
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 1,
-            'msg': 'Invalid refresh token',
-        })
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 1,
+                'msg': 'Invalid refresh token',
+            }
+        )
         mock_response.text = AsyncMock(return_value='{"code":1,"msg":"Invalid refresh token"}')
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
@@ -489,14 +493,16 @@ class TestSpaceServiceExchangeOAuthCode:
         # Mock HTTP response
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'access_token': 'new_access_token',
-                'refresh_token': 'new_refresh_token',
-                'expires_in': 3600,
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'access_token': 'new_access_token',
+                    'refresh_token': 'new_refresh_token',
+                    'expires_in': 3600,
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -555,13 +561,15 @@ class TestSpaceServiceGetUserInfoRaw:
         # Mock HTTP response
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'email': 'test@example.com',
-                'credits': 100,
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'email': 'test@example.com',
+                    'credits': 100,
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -669,27 +677,29 @@ class TestSpaceServiceGetModels:
         # Mock HTTP response with proper model data matching SpaceModel schema
         mock_response = MagicMock()
         mock_response.status = 200
-        mock_response.json = AsyncMock(return_value={
-            'code': 0,
-            'data': {
-                'models': [
-                    {
-                        'uuid': 'uuid-1',
-                        'model_id': 'model-1',
-                        'provider': 'provider-1',
-                        'category': 'chat',
-                        'status': 'active',
-                    },
-                    {
-                        'uuid': 'uuid-2',
-                        'model_id': 'model-2',
-                        'provider': 'provider-2',
-                        'category': 'chat',
-                        'status': 'active',
-                    },
-                ]
+        mock_response.json = AsyncMock(
+            return_value={
+                'code': 0,
+                'data': {
+                    'models': [
+                        {
+                            'uuid': 'uuid-1',
+                            'model_id': 'model-1',
+                            'provider': 'provider-1',
+                            'category': 'chat',
+                            'status': 'active',
+                        },
+                        {
+                            'uuid': 'uuid-2',
+                            'model_id': 'model-2',
+                            'provider': 'provider-2',
+                            'category': 'chat',
+                            'status': 'active',
+                        },
+                    ]
+                },
             }
-        })
+        )
 
         with patch('langbot.pkg.api.http.service.space.httpclient.get_session') as mock_session:
             mock_session_obj = MagicMock()
@@ -775,4 +785,4 @@ class TestSpaceServiceCreditsCache:
         # Verify - cache updated
         assert result == 500
         assert 'test@example.com' in service._credits_cache
-        assert service._credits_cache['test@example.com'][0] == 500
+        assert service._credits_cache['test@example.com'][0] == 500

tests/unit_tests/api/service/test_user_service.py

@@ -495,6 +495,7 @@ class TestUserServiceCreateOrUpdateSpaceUser:
 
         # First call (line 138) returns None, second call (line 194) returns new_user
         call_count = 0
+
         async def mock_get_by_space_uuid(uuid):
             nonlocal call_count
             call_count += 1
@@ -565,6 +566,7 @@ class TestUserServiceCreateOrUpdateSpaceUser:
 
         # First call (line 138) returns None, second call (line 194) returns new_user
         call_count = 0
+
         async def mock_get_by_space_uuid(uuid):
             nonlocal call_count
             call_count += 1
@@ -605,4 +607,4 @@ class TestUserServiceCreateUserLock:
 
         # Verify lock exists
         assert hasattr(service, '_create_user_lock')
-        assert service._create_user_lock is not None
+        assert service._create_user_lock is not None

tests/unit_tests/api/service/test_webhook_service.py

@@ -132,6 +132,7 @@ class TestWebhookServiceCreateWebhook:
 
         # execute_async returns different results
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -181,6 +182,7 @@ class TestWebhookServiceCreateWebhook:
         )
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -217,6 +219,7 @@ class TestWebhookServiceCreateWebhook:
         created_webhook = _create_mock_webhook(webhook_id=1, enabled=False)
 
         call_count = 0
+
         async def mock_execute(query):
             nonlocal call_count
             call_count += 1
@@ -225,9 +228,7 @@ class TestWebhookServiceCreateWebhook:
             return _create_mock_result(first_item=created_webhook)
 
         ap.persistence_mgr.execute_async = AsyncMock(side_effect=mock_execute)
-        ap.persistence_mgr.serialize_model = Mock(
-            return_value={'id': 1, 'enabled': False}
-        )
+        ap.persistence_mgr.serialize_model = Mock(return_value={'id': 1, 'enabled': False})
 
         service = WebhookService(ap)
 
@@ -503,4 +504,4 @@ class TestWebhookServiceGetEnabledWebhooks:
         result = await service.get_enabled_webhooks()
 
         # Verify - should be empty (SQL would filter disabled)
-        assert result == []
+        assert result == []

tests/unit_tests/box/test_box_service.py

@@ -407,7 +407,9 @@ def test_box_service_forced_template_ignores_pipeline_config():
         launcher_type='person',
         launcher_id='test_user',
         sender_id='test_user',
-        pipeline_config={'ai': {'local-agent': {'box-session-id-template': '{launcher_type}_{launcher_id}_{sender_id}'}}},
+        pipeline_config={
+            'ai': {'local-agent': {'box-session-id-template': '{launcher_type}_{launcher_id}_{sender_id}'}}
+        },
     )
 
     assert service.resolve_box_session_id(query) == 'global'
@@ -1527,9 +1529,7 @@ class TestBuildSkillExtraMounts:
             {'host_path': '/box/skills/b', 'mount_path': '/workspace/.skills/b', 'mode': 'rw'},
         ]
         # No skill is dropped, so no "missing" warning should be logged.
-        assert not any(
-            'package_root missing' in str(call.args[0]) for call in logger.warning.call_args_list
-        )
+        assert not any('package_root missing' in str(call.args[0]) for call in logger.warning.call_args_list)
 
     def test_skips_skill_with_empty_package_root(self):
         logger = Mock()

tests/unit_tests/command/__init__.py

@@ -1 +1 @@
-# Unit tests for command module
+# Unit tests for command module

tests/unit_tests/command/test_cmdmgr.py

@@ -529,4 +529,4 @@ class TestEmptyAndEdgeInputs:
 
         # Should yield CommandNotFoundError (no such command registered)
         assert len(results) == 1
-        assert results[0].error is not None
+        assert results[0].error is not None

tests/unit_tests/command/test_operator.py

@@ -197,6 +197,7 @@ class TestCommandOperatorBase:
         op = TestOperator(None)
         # Should not raise
         import asyncio
+
         asyncio.get_event_loop().run_until_complete(op.initialize())
 
     def test_execute_is_abstract(self):
@@ -299,4 +300,4 @@ class TestMultipleOperators:
                 yield None
 
         assert AdminOperator.lowest_privilege == 2
-        assert SubOperator.lowest_privilege == 1
+        assert SubOperator.lowest_privilege == 1

tests/unit_tests/config/test_config_loader.py

@@ -25,7 +25,7 @@ class TestYAMLConfigFile:
     @pytest.mark.asyncio
     async def test_valid_yaml_loads(self, tmp_path):
         """Valid YAML config should load correctly."""
-        config_file = tmp_path / "test_config.yaml"
+        config_file = tmp_path / 'test_config.yaml'
 
         # Write valid YAML
         config_file.write_text("""
@@ -51,7 +51,7 @@ settings:
     @pytest.mark.asyncio
     async def test_invalid_yaml_raises_error(self, tmp_path):
         """Invalid YAML should raise clear error."""
-        config_file = tmp_path / "invalid.yaml"
+        config_file = tmp_path / 'invalid.yaml'
 
         # Write invalid YAML (unclosed bracket)
         config_file.write_text("""
@@ -67,13 +67,13 @@ settings:
             template_data={'name': 'default'},
         )
 
-        with pytest.raises(Exception, match="Syntax error"):
+        with pytest.raises(Exception, match='Syntax error'):
             await yaml_file.load(completion=False)
 
     @pytest.mark.asyncio
     async def test_missing_config_creates_from_template(self, tmp_path):
         """Missing config file should be created from template."""
-        config_file = tmp_path / "new_config.yaml"
+        config_file = tmp_path / 'new_config.yaml'
 
         # File doesn't exist yet
         assert not config_file.exists()
@@ -92,7 +92,7 @@ settings:
     @pytest.mark.asyncio
     async def test_template_completion(self, tmp_path):
         """Config should be completed with template defaults."""
-        config_file = tmp_path / "partial.yaml"
+        config_file = tmp_path / 'partial.yaml'
 
         # Write partial config missing some template keys
         config_file.write_text("""
@@ -115,7 +115,7 @@ name: custom_name
     @pytest.mark.asyncio
     async def test_yaml_save(self, tmp_path):
         """YAML config can be saved."""
-        config_file = tmp_path / "save_test.yaml"
+        config_file = tmp_path / 'save_test.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -131,7 +131,7 @@ name: custom_name
 
     def test_yaml_save_sync(self, tmp_path):
         """YAML config can be saved synchronously."""
-        config_file = tmp_path / "sync_save.yaml"
+        config_file = tmp_path / 'sync_save.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -151,14 +151,18 @@ class TestJSONConfigFile:
     @pytest.mark.asyncio
     async def test_valid_json_loads(self, tmp_path):
         """Valid JSON config should load correctly."""
-        config_file = tmp_path / "test_config.json"
+        config_file = tmp_path / 'test_config.json'
 
         # Write valid JSON
-        config_file.write_text(json.dumps({
-            'name': 'json_app',
-            'version': '1.0',
-            'settings': {'debug': True, 'port': 8080},
-        }))
+        config_file.write_text(
+            json.dumps(
+                {
+                    'name': 'json_app',
+                    'version': '1.0',
+                    'settings': {'debug': True, 'port': 8080},
+                }
+            )
+        )
 
         json_file = JSONConfigFile(
             str(config_file),
@@ -174,7 +178,7 @@ class TestJSONConfigFile:
     @pytest.mark.asyncio
     async def test_invalid_json_raises_error(self, tmp_path):
         """Invalid JSON should raise clear error."""
-        config_file = tmp_path / "invalid.json"
+        config_file = tmp_path / 'invalid.json'
 
         # Write invalid JSON (missing closing brace)
         config_file.write_text('{"name": "test", "unclosed": ')
@@ -184,13 +188,13 @@ class TestJSONConfigFile:
             template_data={'name': 'default'},
         )
 
-        with pytest.raises(Exception, match="Syntax error"):
+        with pytest.raises(Exception, match='Syntax error'):
             await json_file.load(completion=False)
 
     @pytest.mark.asyncio
     async def test_missing_json_creates_from_template(self, tmp_path):
         """Missing JSON file should be created from template."""
-        config_file = tmp_path / "new_config.json"
+        config_file = tmp_path / 'new_config.json'
 
         json_file = JSONConfigFile(
             str(config_file),
@@ -205,7 +209,7 @@ class TestJSONConfigFile:
     @pytest.mark.asyncio
     async def test_json_save(self, tmp_path):
         """JSON config can be saved."""
-        config_file = tmp_path / "save_test.json"
+        config_file = tmp_path / 'save_test.json'
 
         json_file = JSONConfigFile(
             str(config_file),
@@ -226,7 +230,7 @@ class TestConfigManager:
     @pytest.mark.asyncio
     async def test_config_manager_load(self, tmp_path):
         """ConfigManager loads config correctly."""
-        config_file = tmp_path / "manager_test.yaml"
+        config_file = tmp_path / 'manager_test.yaml'
         config_file.write_text('name: managed_app\nversion: "1.0"\n')
 
         yaml_file = YAMLConfigFile(
@@ -243,7 +247,7 @@ class TestConfigManager:
     @pytest.mark.asyncio
     async def test_config_manager_dump(self, tmp_path):
         """ConfigManager can dump config."""
-        config_file = tmp_path / "dump_test.yaml"
+        config_file = tmp_path / 'dump_test.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -260,7 +264,7 @@ class TestConfigManager:
 
     def test_config_manager_dump_sync(self, tmp_path):
         """ConfigManager can dump config synchronously."""
-        config_file = tmp_path / "sync_dump.yaml"
+        config_file = tmp_path / 'sync_dump.yaml'
 
         yaml_file = YAMLConfigFile(
             str(config_file),
@@ -280,7 +284,7 @@ class TestConfigExists:
 
     def test_yaml_exists_true(self, tmp_path):
         """exists() returns True for existing file."""
-        config_file = tmp_path / "exists.yaml"
+        config_file = tmp_path / 'exists.yaml'
         config_file.write_text('name: test')
 
         yaml_file = YAMLConfigFile(str(config_file), template_data={})
@@ -288,14 +292,14 @@ class TestConfigExists:
 
     def test_yaml_exists_false(self, tmp_path):
         """exists() returns False for missing file."""
-        config_file = tmp_path / "missing.yaml"
+        config_file = tmp_path / 'missing.yaml'
 
         yaml_file = YAMLConfigFile(str(config_file), template_data={})
         assert yaml_file.exists() is False
 
     def test_json_exists_true(self, tmp_path):
         """exists() returns True for existing JSON file."""
-        config_file = tmp_path / "exists.json"
+        config_file = tmp_path / 'exists.json'
         config_file.write_text('{}')
 
         json_file = JSONConfigFile(str(config_file), template_data={})
@@ -303,7 +307,7 @@ class TestConfigExists:
 
     def test_json_exists_false(self, tmp_path):
         """exists() returns False for missing JSON file."""
-        config_file = tmp_path / "missing.json"
+        config_file = tmp_path / 'missing.json'
 
         json_file = JSONConfigFile(str(config_file), template_data={})
-        assert json_file.exists() is False
+        assert json_file.exists() is False

tests/unit_tests/core/__init__.py

@@ -1 +1 @@
-"""Core module unit tests."""
+"""Core module unit tests."""

tests/unit_tests/core/test_app_config_validation.py

@@ -4,6 +4,7 @@ Tests cover:
 - _get_positive_int_config() validation
 - _get_positive_float_config() validation
 """
+
 from __future__ import annotations
 
 from unittest.mock import Mock
@@ -188,4 +189,4 @@ class TestGetPositiveFloatConfig:
         result = app._get_positive_float_config('not-a-number', default=1.5, name='test.config')
 
         assert result == 1.5
-        mock_logger.warning.assert_called_once()
+        mock_logger.warning.assert_called_once()

tests/unit_tests/core/test_bootutils_deps.py

@@ -27,6 +27,7 @@ class TestCheckDeps:
                 from langbot.pkg.core.bootutils.deps import check_deps
 
                 import asyncio
+
                 result = asyncio.get_event_loop().run_until_complete(check_deps())
 
                 assert result == []
@@ -46,6 +47,7 @@ class TestCheckDeps:
                 from langbot.pkg.core.bootutils.deps import check_deps
 
                 import asyncio
+
                 result = asyncio.get_event_loop().run_until_complete(check_deps())
 
                 assert 'requests' in result
@@ -61,6 +63,7 @@ class TestCheckDeps:
                 from langbot.pkg.core.bootutils.deps import check_deps, required_deps
 
                 import asyncio
+
                 result = asyncio.get_event_loop().run_until_complete(check_deps())
 
                 # Should include all required_deps keys
@@ -107,6 +110,7 @@ class TestPrecheckPluginDeps:
         with patch('os.path.exists', return_value=False):
             with patch('langbot.pkg.core.bootutils.deps.pkgmgr.install_requirements') as mock_install:
                 import asyncio
+
                 asyncio.get_event_loop().run_until_complete(precheck_plugin_deps())
 
                 mock_install.assert_not_called()
@@ -129,6 +133,7 @@ class TestPrecheckPluginDeps:
                 with patch('os.listdir', side_effect=mock_listdir):
                     with patch('langbot.pkg.core.bootutils.deps.pkgmgr.install_requirements') as mock_install:
                         import asyncio
+
                         asyncio.get_event_loop().run_until_complete(precheck_plugin_deps())
 
         mock_install.assert_called_once_with('plugins/plugin1/requirements.txt', extra_params=[])

tests/unit_tests/core/test_load_config.py

@@ -7,6 +7,7 @@ Tests cover:
 - Dict type skipping
 - Missing key creation
 """
+
 from __future__ import annotations
 
 import os
@@ -248,15 +249,8 @@ class TestApplyEnvOverridesToConfig:
         """Test multiple env vars applied in order."""
         load_config = get_load_config_module()
 
-        cfg = {
-            'system': {'name': 'default', 'enable': True},
-            'concurrency': {'pipeline': 5}
-        }
-        env = {
-            'SYSTEM__NAME': 'custom',
-            'SYSTEM__ENABLE': 'false',
-            'CONCURRENCY__PIPELINE': '10'
-        }
+        cfg = {'system': {'name': 'default', 'enable': True}, 'concurrency': {'pipeline': 5}}
+        env = {'SYSTEM__NAME': 'custom', 'SYSTEM__ENABLE': 'false', 'CONCURRENCY__PIPELINE': '10'}
 
         with patch.dict(os.environ, env, clear=True):
             result = load_config._apply_env_overrides_to_config(cfg)
@@ -287,4 +281,4 @@ class TestApplyEnvOverridesToConfig:
         with patch.dict(os.environ, env, clear=True):
             result = load_config._apply_env_overrides_to_config(cfg)
 
-        assert result['api']['extra_webhook_prefix'] == 'https://extra.example.com'
+        assert result['api']['extra_webhook_prefix'] == 'https://extra.example.com'

tests/unit_tests/core/test_stage.py

@@ -175,4 +175,4 @@ class TestPreregisteredStages:
                 pass
 
             for key in preregistered_stages:
-                assert isinstance(key, str)
+                assert isinstance(key, str)

tests/unit_tests/core/test_taskmgr.py

@@ -7,6 +7,7 @@ Tests cover:
 
 Note: Uses import_isolation to break circular import chains.
 """
+
 from __future__ import annotations
 
 import pytest
@@ -19,15 +20,17 @@ from typing import Generator
 
 class MockLifecycleControlScopeEnum:
     """Mock enum value for LifecycleControlScope with .value attribute."""
+
     def __init__(self, value: str):
         self.value = value
 
     def __repr__(self):
-        return f"LifecycleControlScope.{self.value.upper()}"
+        return f'LifecycleControlScope.{self.value.upper()}'
 
 
 class MockLifecycleControlScope:
     """Mock enum for LifecycleControlScope."""
+
     APPLICATION = MockLifecycleControlScopeEnum('application')
     PLATFORM = MockLifecycleControlScopeEnum('platform')
     PIPELINE = MockLifecycleControlScopeEnum('pipeline')
@@ -40,17 +43,17 @@ def isolated_taskmgr_import() -> Generator[None, None, None]:
     # Mock modules that cause circular imports
     mock_entities = MagicMock()
     mock_entities.LifecycleControlScope = MockLifecycleControlScope
-    
+
     mock_app = MagicMock()
-    
+
     mock_importutil = MagicMock()
     mock_importutil.import_modules_in_pkg = lambda pkg: None
     mock_importutil.import_modules_in_pkgs = lambda pkgs: None
-    
+
     mock_http_controller = MagicMock()
-    
+
     mock_rag_mgr = MagicMock()
-    
+
     mocks = {
         'langbot.pkg.core.entities': mock_entities,
         'langbot.pkg.core.app': mock_app,
@@ -58,26 +61,26 @@ def isolated_taskmgr_import() -> Generator[None, None, None]:
         'langbot.pkg.rag.knowledge.kbmgr': mock_rag_mgr,
         'langbot.pkg.utils.importutil': mock_importutil,
     }
-    
+
     # Save original state
     saved = {}
     for name in mocks:
         if name in sys.modules:
             saved[name] = sys.modules[name]
-    
+
     # Clear taskmgr to force re-import
     taskmgr_name = 'langbot.pkg.core.taskmgr'
     if taskmgr_name in sys.modules:
         saved[taskmgr_name] = sys.modules[taskmgr_name]
-    
+
     try:
         # Apply mocks
         for name, module in mocks.items():
             sys.modules[name] = module
-        
+
         # Clear taskmgr
         sys.modules.pop(taskmgr_name, None)
-        
+
         yield
     finally:
         # Restore
@@ -86,7 +89,7 @@ def isolated_taskmgr_import() -> Generator[None, None, None]:
                 sys.modules[name] = saved[name]
             else:
                 sys.modules.pop(name, None)
-        
+
         if taskmgr_name in saved:
             sys.modules[taskmgr_name] = saved[taskmgr_name]
         else:
@@ -97,6 +100,7 @@ def get_taskmgr_classes():
     """Get TaskContext, TaskWrapper, AsyncTaskManager classes."""
     with isolated_taskmgr_import():
         from langbot.pkg.core.taskmgr import TaskContext, TaskWrapper, AsyncTaskManager
+
         return TaskContext, TaskWrapper, AsyncTaskManager
 
 
@@ -194,9 +198,10 @@ class TestTaskContext:
         """Test TaskContext.placeholder() returns singleton."""
         with isolated_taskmgr_import():
             from langbot.pkg.core.taskmgr import TaskContext
-            
+
             # Reset global placeholder
             import langbot.pkg.core.taskmgr as taskmgr_module
+
             taskmgr_module.placeholder_context = None
 
             ctx1 = TaskContext.placeholder()
@@ -269,7 +274,8 @@ class TestTaskWrapper:
             return 'result'
 
         wrapper = TaskWrapper(
-            mock_app, immediate_coro(),
+            mock_app,
+            immediate_coro(),
             name='test_task',
             label='Test Task',
         )
@@ -414,7 +420,7 @@ class TestAsyncTaskManager:
     async def test_cancel_by_scope(self):
         """Test cancel_by_scope cancels matching tasks."""
         _, _, AsyncTaskManager = get_taskmgr_classes()
-        
+
         mock_app = create_mock_app()
         manager = AsyncTaskManager(mock_app)
 
@@ -422,16 +428,10 @@ class TestAsyncTaskManager:
             await asyncio.sleep(10)
 
         # Create task with APPLICATION scope
-        w1 = manager.create_task(
-            long_coro(),
-            scopes=[MockLifecycleControlScope.APPLICATION]
-        )
+        w1 = manager.create_task(long_coro(), scopes=[MockLifecycleControlScope.APPLICATION])
 
         # Create task with different scope
-        w2 = manager.create_task(
-            long_coro(),
-            scopes=[MockLifecycleControlScope.PIPELINE]
-        )
+        w2 = manager.create_task(long_coro(), scopes=[MockLifecycleControlScope.PIPELINE])
 
         manager.cancel_by_scope(MockLifecycleControlScope.APPLICATION)
 

tests/unit_tests/discover/test_engine.py

@@ -15,68 +15,68 @@ class TestI18nString:
 
     def test_create_with_english_only(self):
         """Create I18nString with only English."""
-        i18n = I18nString(en_US="Hello")
+        i18n = I18nString(en_US='Hello')
 
-        assert i18n.en_US == "Hello"
+        assert i18n.en_US == 'Hello'
         assert i18n.zh_Hans is None
 
     def test_create_with_multiple_languages(self):
         """Create I18nString with multiple languages."""
         i18n = I18nString(
-            en_US="Hello",
-            zh_Hans="你好",
-            zh_Hant="你好",
-            ja_JP="こんにちは",
+            en_US='Hello',
+            zh_Hans='你好',
+            zh_Hant='你好',
+            ja_JP='こんにちは',
         )
 
-        assert i18n.en_US == "Hello"
-        assert i18n.zh_Hans == "你好"
-        assert i18n.zh_Hant == "你好"
-        assert i18n.ja_JP == "こんにちは"
+        assert i18n.en_US == 'Hello'
+        assert i18n.zh_Hans == '你好'
+        assert i18n.zh_Hant == '你好'
+        assert i18n.ja_JP == 'こんにちは'
 
     def test_to_dict_with_english_only(self):
         """to_dict returns only non-None fields."""
-        i18n = I18nString(en_US="Hello")
+        i18n = I18nString(en_US='Hello')
 
         result = i18n.to_dict()
 
-        assert result == {"en_US": "Hello"}
+        assert result == {'en_US': 'Hello'}
 
     def test_to_dict_with_multiple_languages(self):
         """to_dict returns all non-None fields."""
         i18n = I18nString(
-            en_US="Hello",
-            zh_Hans="你好",
+            en_US='Hello',
+            zh_Hans='你好',
         )
 
         result = i18n.to_dict()
 
-        assert result == {"en_US": "Hello", "zh_Hans": "你好"}
+        assert result == {'en_US': 'Hello', 'zh_Hans': '你好'}
 
     def test_to_dict_excludes_none(self):
         """to_dict excludes None values."""
         i18n = I18nString(
-            en_US="Hello",
+            en_US='Hello',
             zh_Hans=None,
-            ja_JP="こんにちは",
+            ja_JP='こんにちは',
         )
 
         result = i18n.to_dict()
 
-        assert "zh_Hans" not in result
-        assert "en_US" in result
-        assert "ja_JP" in result
+        assert 'zh_Hans' not in result
+        assert 'en_US' in result
+        assert 'ja_JP' in result
 
     def test_to_dict_all_languages(self):
         """to_dict with all supported languages."""
         i18n = I18nString(
-            en_US="Hello",
-            zh_Hans="你好",
-            zh_Hant="你好",
-            ja_JP="こんにちは",
-            th_TH="สวัสดี",
-            vi_VN="Xin chào",
-            es_ES="Hola",
+            en_US='Hello',
+            zh_Hans='你好',
+            zh_Hant='你好',
+            ja_JP='こんにちは',
+            th_TH='สวัสดี',
+            vi_VN='Xin chào',
+            es_ES='Hola',
         )
 
         result = i18n.to_dict()
@@ -92,30 +92,30 @@ class TestMetadata:
         from langbot.pkg.discover.engine import I18nString
 
         metadata = Metadata(
-            name="test-component",
-            label=I18nString(en_US="Test Component"),
+            name='test-component',
+            label=I18nString(en_US='Test Component'),
         )
 
-        assert metadata.name == "test-component"
-        assert metadata.label.en_US == "Test Component"
+        assert metadata.name == 'test-component'
+        assert metadata.label.en_US == 'Test Component'
 
     def test_create_with_all_fields(self):
         """Create Metadata with all optional fields."""
         from langbot.pkg.discover.engine import I18nString
 
         metadata = Metadata(
-            name="test-component",
-            label=I18nString(en_US="Test"),
-            description=I18nString(en_US="A test component"),
-            version="1.0.0",
-            icon="test-icon",
-            author="Test Author",
-            repository="https://github.com/test/repo",
+            name='test-component',
+            label=I18nString(en_US='Test'),
+            description=I18nString(en_US='A test component'),
+            version='1.0.0',
+            icon='test-icon',
+            author='Test Author',
+            repository='https://github.com/test/repo',
         )
 
-        assert metadata.version == "1.0.0"
-        assert metadata.icon == "test-icon"
-        assert metadata.author == "Test Author"
+        assert metadata.version == '1.0.0'
+        assert metadata.icon == 'test-icon'
+        assert metadata.author == 'Test Author'
 
 
 class TestComponentManifest:

tests/unit_tests/persistence/test_database_decorator.py

@@ -7,6 +7,7 @@ Tests cover:
 
 Note: Uses import isolation to break circular import chains.
 """
+
 from __future__ import annotations
 
 import sys
@@ -86,6 +87,7 @@ def get_database_module():
     """Get database module with import isolation."""
     with isolated_database_import():
         from langbot.pkg.persistence import database
+
         return database
 
 
@@ -198,4 +200,4 @@ class TestManagerClassDecorator:
         # Create instance to test method (with mock app)
         mock_app = Mock()
         instance = ManagerWithMethods(mock_app)
-        assert instance.custom_method() == 'test_value'
+        assert instance.custom_method() == 'test_value'

tests/unit_tests/persistence/test_mgr_methods.py

@@ -4,6 +4,7 @@ Tests cover:
 - execute_async() with mock database
 - get_db_engine() with mock database manager
 """
+
 from __future__ import annotations
 
 import pytest
@@ -85,7 +86,7 @@ class TestExecuteAsync:
         mock_db.get_engine = Mock(return_value=mock_engine)
         mgr.db = mock_db
 
-        result = await mgr.execute_async(sqlalchemy.text("SELECT 1"))
+        result = await mgr.execute_async(sqlalchemy.text('SELECT 1'))
 
         # Verify result is the same object returned by execute
         assert result is mock_result
@@ -152,4 +153,4 @@ class TestSerializeModelEdgeCases:
         result = mgr.serialize_model(SimpleModel, instance, masked_columns=['id', 'name'])
 
         # Result should be empty dict when all columns masked
-        assert result == {}
+        assert result == {}

tests/unit_tests/persistence/test_serialize_model.py

@@ -5,6 +5,7 @@ Tests cover:
 - datetime conversion to isoformat
 - masked_columns exclusion
 """
+
 from __future__ import annotations
 
 import datetime

tests/unit_tests/pipeline/test_aggregator.py

@@ -49,7 +49,7 @@ class TestPendingMessage:
         """PendingMessage should be created with correct fields."""
         aggregator = get_aggregator_module()
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -88,7 +88,7 @@ class TestSessionBuffer:
         """SessionBuffer should accept initial messages."""
         aggregator = get_aggregator_module()
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -309,7 +309,7 @@ class TestMessageAggregatorAddMessage:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -348,7 +348,7 @@ class TestMessageAggregatorAddMessage:
 
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -387,7 +387,7 @@ class TestMessageAggregatorAddMessage:
 
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -419,7 +419,7 @@ class TestMessageAggregatorMerge:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -445,8 +445,8 @@ class TestMessageAggregatorMerge:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain1 = text_chain("hello")
-        chain2 = text_chain("world")
+        chain1 = text_chain('hello')
+        chain2 = text_chain('world')
         event = friend_message_event(chain1)
         adapter = mock_adapter()
 
@@ -476,8 +476,8 @@ class TestMessageAggregatorMerge:
 
         # Should contain both messages with separator
         merged_str = str(merged.message_chain)
-        assert "hello" in merged_str
-        assert "world" in merged_str
+        assert 'hello' in merged_str
+        assert 'world' in merged_str
 
     def test_merge_messages_preserves_routed_by_rule_if_any_input_matches(self):
         """Merged PendingMessage should keep routed_by_rule when any input was rule-routed."""
@@ -486,8 +486,8 @@ class TestMessageAggregatorMerge:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain1 = text_chain("first")
-        chain2 = text_chain("second")
+        chain1 = text_chain('first')
+        chain2 = text_chain('second')
         event = friend_message_event(chain1)
         adapter = mock_adapter()
 
@@ -545,7 +545,7 @@ class TestMessageAggregatorFlush:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 
@@ -597,7 +597,7 @@ class TestMessageAggregatorFlushAll:
         app = make_aggregator_app()
         agg = aggregator.MessageAggregator(app)
 
-        chain = text_chain("hello")
+        chain = text_chain('hello')
         event = friend_message_event(chain)
         adapter = mock_adapter()
 

tests/unit_tests/pipeline/test_chat_handler.py

@@ -15,6 +15,7 @@ from tests.factories import FakeApp
 
 # ============== FIXTURE USING IMPORT ISOLATION UTILITY ==============
 
+
 @pytest.fixture(scope='module')
 def mock_circular_import_chain():
     """
@@ -36,9 +37,11 @@ def mock_circular_import_chain():
     # Create a default runner that yields a simple response
     class DefaultRunner:
         name = 'local-agent'
+
         def __init__(self, app, config):
             self.app = app
             self.config = config
+
         async def run(self, query):
             yield Message(role='assistant', content='fake response')
 
@@ -70,9 +73,12 @@ def mock_event_ctx():
 @pytest.fixture
 def set_runner():
     """Factory fixture to set a custom runner for tests."""
+
     def _set_runner(runner_class):
         import sys
+
         sys.modules['langbot.pkg.provider.runner'].preregistered_runners = [runner_class]
+
     return _set_runner
 
 
@@ -87,6 +93,7 @@ def get_chat_handler():
     global _chat_handler_module
     if _chat_handler_module is None:
         from importlib import import_module
+
         _chat_handler_module = import_module('langbot.pkg.pipeline.process.handlers.chat')
     return _chat_handler_module
 
@@ -96,12 +103,14 @@ def get_entities():
     global _entities_module
     if _entities_module is None:
         from importlib import import_module
+
         _entities_module = import_module('langbot.pkg.pipeline.entities')
     return _entities_module
 
 
 # ============== REAL ChatMessageHandler Tests ==============
 
+
 @pytest.mark.usefixtures('mock_circular_import_chain')
 class TestChatMessageHandlerReal:
     """Tests for real ChatMessageHandler class."""
@@ -188,9 +197,11 @@ class TestChatMessageHandlerReal:
 
         class QuickRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 yield Message(role='assistant', content='ok')
 
@@ -222,9 +233,11 @@ class TestChatMessageHandlerReal:
 
         class SingleRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 yield Message(role='assistant', content='response')
 
@@ -262,9 +275,11 @@ class TestChatHandlerStreaming:
 
         class StreamRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 yield MessageChunk(role='assistant', content='Hello', is_final=False)
                 yield MessageChunk(role='assistant', content=' World', is_final=True)
@@ -303,14 +318,19 @@ class TestChatHandlerExceptions:
 
         query.pipeline_config = {
             'output': {'misc': {'exception-handling': 'show-hint', 'failure-hint': 'Request failed.'}},
-            'ai': {'runner': {'runner': 'local-agent'}, 'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}}},
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}},
+            },
         }
 
         class FailingRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 raise ValueError('API error')
                 yield
@@ -346,14 +366,19 @@ class TestChatHandlerExceptions:
 
         query.pipeline_config = {
             'output': {'misc': {'exception-handling': 'show-error'}},
-            'ai': {'runner': {'runner': 'local-agent'}, 'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}}},
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}},
+            },
         }
 
         class ErrorRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 raise ValueError('Custom error')
                 yield
@@ -386,14 +411,19 @@ class TestChatHandlerExceptions:
 
         query.pipeline_config = {
             'output': {'misc': {'exception-handling': 'hide'}},
-            'ai': {'runner': {'runner': 'local-agent'}, 'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}}},
+            'ai': {
+                'runner': {'runner': 'local-agent'},
+                'local-agent': {'prompt': 'default', 'model': {'primary': 'test'}},
+            },
         }
 
         class HideErrorRunner:
             name = 'local-agent'
+
             def __init__(self, app, config):
                 self.app = app
                 self.config = config
+
             async def run(self, query):
                 raise RuntimeError('hidden')
                 yield
@@ -433,4 +463,4 @@ class TestChatHandlerHelper:
         chat = get_chat_handler()
         handler = chat.ChatMessageHandler(fake_app)
         result = handler.cut_str('first line\nsecond line')
-        assert '...' in result
+        assert '...' in result

tests/unit_tests/pipeline/test_cntfilter.py

@@ -67,7 +67,11 @@ def make_pipeline_config(**overrides):
     for key, value in overrides.items():
         if key in base_config and isinstance(base_config[key], dict) and isinstance(value, dict):
             for sub_key, sub_value in value.items():
-                if sub_key in base_config[key] and isinstance(base_config[key][sub_key], dict) and isinstance(sub_value, dict):
+                if (
+                    sub_key in base_config[key]
+                    and isinstance(base_config[key][sub_key], dict)
+                    and isinstance(sub_value, dict)
+                ):
                     base_config[key][sub_key].update(sub_value)
                 else:
                     base_config[key][sub_key] = sub_value
@@ -141,7 +145,7 @@ class TestPreContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello world")
+        query = text_query('hello world')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -163,7 +167,7 @@ class TestPreContentFilter:
         await stage.initialize(pipeline_config)
 
         # Empty message chain
-        query = text_query("")
+        query = text_query('')
         query.message_chain = platform_message.MessageChain([])
         query.pipeline_config = pipeline_config
 
@@ -185,7 +189,7 @@ class TestPreContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("   ")  # Only whitespace
+        query = text_query('   ')  # Only whitespace
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -234,7 +238,7 @@ class TestPreContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello world")
+        query = text_query('hello world')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -266,7 +270,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("/help me")
+        query = text_query('/help me')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -294,7 +298,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("http://example.com")
+        query = text_query('http://example.com')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -322,7 +326,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("normal message")
+        query = text_query('normal message')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -343,7 +347,7 @@ class TestContentIgnoreFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("/help me")
+        query = text_query('/help me')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')
@@ -368,12 +372,10 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Add a response message
-        query.resp_messages = [
-            provider_message.Message(role='assistant', content='Hello back!')
-        ]
+        query.resp_messages = [provider_message.Message(role='assistant', content='Hello back!')]
 
         result = await stage.process(query, 'PostContentFilterStage')
 
@@ -398,11 +400,9 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_messages = [
-            provider_message.Message(role='assistant', content='Response')
-        ]
+        query.resp_messages = [provider_message.Message(role='assistant', content='Response')]
 
         result = await stage.process(query, 'PostContentFilterStage')
 
@@ -422,7 +422,7 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Non-string content - use model_construct to bypass validation
         # The actual content type could be a list of ContentElement objects
@@ -450,11 +450,9 @@ class TestPostContentFilter:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_messages = [
-            provider_message.Message(role='assistant', content='')
-        ]
+        query.resp_messages = [provider_message.Message(role='assistant', content='')]
 
         result = await stage.process(query, 'PostContentFilterStage')
 
@@ -476,7 +474,7 @@ class TestContentFilterStageInvalidName:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
 
         with pytest.raises(ValueError, match='未知的 stage_inst_name'):
@@ -506,7 +504,7 @@ class TestContentIgnoreFilterDirect:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("normal message without prefix")
+        query = text_query('normal message without prefix')
         query.pipeline_config = pipeline_config
 
         result = await stage.process(query, 'PreContentFilterStage')

tests/unit_tests/pipeline/test_command_handler.py

@@ -15,6 +15,7 @@ from tests.factories import FakeApp, command_query
 
 # ============== FIXTURE USING IMPORT ISOLATION UTILITY ==============
 
+
 @pytest.fixture(scope='module')
 def mock_circular_import_chain():
     """
@@ -56,6 +57,7 @@ def mock_event_ctx():
 @pytest.fixture
 def mock_execute_factory():
     """Factory fixture to create mock cmd_mgr.execute generators."""
+
     def _create_execute(
         text: str | None = 'ok',
         error: str | None = None,
@@ -71,7 +73,9 @@ def mock_execute_factory():
             ret.image_base64 = image_base64
             ret.file_url = file_url
             yield ret
+
         return mock_execute
+
     return _create_execute
 
 
@@ -86,6 +90,7 @@ def get_command_handler():
     global _command_handler_module
     if _command_handler_module is None:
         from importlib import import_module
+
         _command_handler_module = import_module('langbot.pkg.pipeline.process.handlers.command')
     return _command_handler_module
 
@@ -95,12 +100,14 @@ def get_entities():
     global _entities_module
     if _entities_module is None:
         from importlib import import_module
+
         _entities_module = import_module('langbot.pkg.pipeline.entities')
     return _entities_module
 
 
 # ============== REAL CommandHandler Tests ==============
 
+
 @pytest.mark.usefixtures('mock_circular_import_chain')
 class TestCommandHandlerReal:
     """Tests for real CommandHandler class."""
@@ -127,6 +134,7 @@ class TestCommandHandlerReal:
         fake_app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         executed_commands = []
+
         async def track_execute(command_text, full_command_text, query, session):
             executed_commands.append(command_text)
             ret = Mock()
@@ -334,8 +342,7 @@ class TestCommandHandlerReal:
         command = get_command_handler()
         fake_app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
         fake_app.cmd_mgr.execute = mock_execute_factory(
-            text='Here is the image:',
-            image_url='https://example.com/image.png'
+            text='Here is the image:', image_url='https://example.com/image.png'
         )
 
         handler = command.CommandHandler(fake_app)
@@ -393,4 +400,4 @@ class TestCommandHandlerHelper:
         command = get_command_handler()
         handler = command.CommandHandler(fake_app)
         result = handler.cut_str('first line\nsecond line')
-        assert '...' in result
+        assert '...' in result

tests/unit_tests/pipeline/test_longtext.py

@@ -126,11 +126,9 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text="very long response")])
-        ]
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text='very long response')])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 
@@ -151,11 +149,9 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text="short response")])
-        ]
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text='short response')])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 
@@ -179,14 +175,13 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Non-Plain component (Image)
         query.resp_message_chain = [
-            platform_message.MessageChain([
-                platform_message.Plain(text="short"),
-                platform_message.Image(url="https://example.com/img.png")
-            ])
+            platform_message.MessageChain(
+                [platform_message.Plain(text='short'), platform_message.Image(url='https://example.com/img.png')]
+            )
         ]
 
         result = await stage.process(query, 'LongTextProcessStage')
@@ -213,7 +208,7 @@ class TestLongTextProcessStageProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -232,7 +227,7 @@ class TestLongTextProcessStageProcess:
         stage = longtext.LongTextProcessStage(app)
         stage.strategy_impl = AsyncMock()
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = make_longtext_config(strategy='forward', threshold=1)
         query.resp_message_chain = []
 
@@ -242,6 +237,7 @@ class TestLongTextProcessStageProcess:
         assert result.new_query is query
         stage.strategy_impl.process.assert_not_called()
 
+
 class TestForwardStrategy:
     """Tests for ForwardComponentStrategy."""
 
@@ -260,7 +256,7 @@ class TestForwardStrategy:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         # Create a mock adapter with bot_account_id
         mock_adapter = Mock()
@@ -268,10 +264,8 @@ class TestForwardStrategy:
         query.adapter = mock_adapter
 
         # Long text exceeding threshold
-        long_text = "This is a very long response that exceeds the threshold"
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text=long_text)])
-        ]
+        long_text = 'This is a very long response that exceeds the threshold'
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text=long_text)])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 
@@ -297,13 +291,13 @@ class TestForwardStrategy:
 
         await strat.initialize()
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = make_longtext_config()
         mock_adapter = Mock()
         mock_adapter.bot_account_id = '12345'
         query.adapter = mock_adapter
 
-        components = await strat.process("test message", query)
+        components = await strat.process('test message', query)
 
         assert len(components) == 1
         assert isinstance(components[0], platform_message.Forward)
@@ -326,14 +320,12 @@ class TestLongTextThreshold:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
 
         # Text below threshold
-        short_text = "x" * (threshold - 1)
-        query.resp_message_chain = [
-            platform_message.MessageChain([platform_message.Plain(text=short_text)])
-        ]
+        short_text = 'x' * (threshold - 1)
+        query.resp_message_chain = [platform_message.MessageChain([platform_message.Plain(text=short_text)])]
 
         result = await stage.process(query, 'LongTextProcessStage')
 

tests/unit_tests/pipeline/test_msgtrun.py

@@ -115,7 +115,7 @@ class TestRoundTruncatorProcess:
         await stage.initialize(pipeline_config)
 
         # Create query with 3 messages (within limit)
-        query = text_query("current message")
+        query = text_query('current message')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='message 1'),
@@ -154,7 +154,7 @@ class TestRoundTruncatorProcess:
 
         # Create query with many messages exceeding limit
         # 7 messages = 3 full rounds + 1 current user
-        query = text_query("current message")
+        query = text_query('current message')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='message 1'),
@@ -194,7 +194,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.messages = []
 
@@ -216,7 +216,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='hello'),
@@ -240,7 +240,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("current")
+        query = text_query('current')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='user1'),
@@ -274,7 +274,7 @@ class TestRoundTruncatorProcess:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("current")
+        query = text_query('current')
         query.pipeline_config = pipeline_config
         query.messages = [
             provider_message.Message(role='user', content='old1'),
@@ -305,7 +305,7 @@ class TestRoundTruncatorDirect:
                 trun = trun_cls(app)
                 break
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = make_truncate_config(max_round=3)
         query.messages = [
             provider_message.Message(role='user', content='m1'),

tests/unit_tests/pipeline/test_preproc.py

@@ -78,7 +78,7 @@ class TestPreProcessorNormalText:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello world")
+        query = text_query('hello world')
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -113,7 +113,7 @@ class TestPreProcessorNormalText:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("test message")
+        query = text_query('test message')
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -194,13 +194,16 @@ class TestPreProcessorImageSegment:
 
         stage = preproc.PreProcessor(app)
         # Image query with base64
-        query = image_query(text="look at this", url=None)
+        query = image_query(text='look at this', url=None)
         # Set base64 on the image component
         import langbot_plugin.api.entities.builtin.platform.message as platform_message
-        chain = platform_message.MessageChain([
-            platform_message.Plain(text="look at this"),
-            platform_message.Image(base64="data:image/png;base64,abc123"),
-        ])
+
+        chain = platform_message.MessageChain(
+            [
+                platform_message.Plain(text='look at this'),
+                platform_message.Image(base64='data:image/png;base64,abc123'),
+            ]
+        )
         query.message_chain = chain
 
         result = await stage.process(query, 'PreProcessor')
@@ -238,7 +241,7 @@ class TestPreProcessorImageSegment:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = image_query(text="describe this")
+        query = image_query(text='describe this')
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -276,7 +279,7 @@ class TestPreProcessorModelSelection:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello")
+        query = text_query('hello')
 
         # Set pipeline config with primary model
         query.pipeline_config = {
@@ -335,7 +338,7 @@ class TestPreProcessorModelSelection:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello")
+        query = text_query('hello')
 
         query.pipeline_config = {
             'ai': {
@@ -384,7 +387,7 @@ class TestPreProcessorVariables:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = text_query("hello", sender_id=67890)
+        query = text_query('hello', sender_id=67890)
 
         result = await stage.process(query, 'PreProcessor')
 
@@ -421,7 +424,7 @@ class TestPreProcessorVariables:
         app.plugin_connector.emit_event = AsyncMock(return_value=mock_event_ctx)
 
         stage = preproc.PreProcessor(app)
-        query = group_text_query("hello", group_id=99999)
+        query = group_text_query('hello', group_id=99999)
 
         result = await stage.process(query, 'PreProcessor')
 

tests/unit_tests/pipeline/test_ratelimit.py

@@ -46,7 +46,7 @@ class TestFixedWindowAlgo:
             'safety': {
                 'rate-limit': {
                     'window-length': 60,  # 60 seconds window
-                    'limitation': 10,     # 10 requests per window
+                    'limitation': 10,  # 10 requests per window
                     'strategy': 'drop',
                 }
             }
@@ -75,11 +75,9 @@ class TestFixedWindowAlgo:
         # Make requests within limit
         for i in range(10):
             result = await algo.require_access(
-                sample_query_with_rate_limit,
-                provider_session.LauncherTypes.PERSON,
-                '12345'
+                sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345'
             )
-            assert result is True, f"Request {i+1} should be allowed"
+            assert result is True, f'Request {i + 1} should be allowed'
 
     @pytest.mark.asyncio
     async def test_fixedwin_exceeds_limit_drop_strategy(self, mock_app_for_algo, sample_query_with_rate_limit):
@@ -91,20 +89,12 @@ class TestFixedWindowAlgo:
 
         # Exhaust the limit
         for i in range(10):
-            await algo.require_access(
-                sample_query_with_rate_limit,
-                provider_session.LauncherTypes.PERSON,
-                '12345'
-            )
+            await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
         # Next request should be denied
-        result = await algo.require_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        result = await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
-        assert result is False, "Request exceeding limit should be denied"
+        assert result is False, 'Request exceeding limit should be denied'
 
     @pytest.mark.asyncio
     async def test_fixedwin_different_sessions_isolated(self, mock_app_for_algo, sample_query_with_rate_limit):
@@ -116,20 +106,14 @@ class TestFixedWindowAlgo:
 
         # Exhaust limit for session 1
         for i in range(10):
-            await algo.require_access(
-                sample_query_with_rate_limit,
-                provider_session.LauncherTypes.PERSON,
-                'session1'
-            )
+            await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, 'session1')
 
         # Session 2 should still have its own limit
         result = await algo.require_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            'session2'
+            sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, 'session2'
         )
 
-        assert result is True, "Different session should have independent limit"
+        assert result is True, 'Different session should have independent limit'
 
     @pytest.mark.asyncio
     async def test_fixedwin_limit_one_request(self, mock_app_for_algo, sample_query):
@@ -150,19 +134,11 @@ class TestFixedWindowAlgo:
         await algo.initialize()
 
         # First request allowed
-        result1 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        result1 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, '12345')
         assert result1 is True
 
         # Second request denied
-        result2 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        result2 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, '12345')
         assert result2 is False
 
     @pytest.mark.asyncio
@@ -174,11 +150,7 @@ class TestFixedWindowAlgo:
         await algo.initialize()
 
         # First request creates container
-        await algo.require_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        await algo.require_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
         # Key format: 'LauncherTypes.PERSON_12345' (enum string representation)
         expected_key = 'LauncherTypes.PERSON_12345'
@@ -230,7 +202,7 @@ class TestFixedWindowAlgo:
 
         # New request should be allowed (new window)
         result = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'test')
-        assert result is True, "New window should allow new requests"
+        assert result is True, 'New window should allow new requests'
 
     @pytest.mark.asyncio
     async def test_fixedwin_wait_strategy_blocks_until_next_window(self, mock_app_for_algo, sample_query):
@@ -256,29 +228,21 @@ class TestFixedWindowAlgo:
 
         # First request allowed
         start_time = time.time()
-        result1 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            'wait_test'
-        )
+        result1 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'wait_test')
         assert result1 is True
 
         # Exhaust limit
         await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'wait_test')
 
         # Third request should wait and then succeed
-        result3 = await algo.require_access(
-            sample_query,
-            provider_session.LauncherTypes.PERSON,
-            'wait_test'
-        )
+        result3 = await algo.require_access(sample_query, provider_session.LauncherTypes.PERSON, 'wait_test')
         elapsed = time.time() - start_time
 
-        assert result3 is True, "After wait, request should succeed"
+        assert result3 is True, 'After wait, request should succeed'
         # Should have waited approximately until next window
         # With 1-second window, elapsed should be > 0.5 second (allowing for timing variance)
         # Note: This is a timing-sensitive test, so we use a generous tolerance
-        assert elapsed >= 0.5, f"Should have waited for next window, elapsed={elapsed:.2f}s"
+        assert elapsed >= 0.5, f'Should have waited for next window, elapsed={elapsed:.2f}s'
 
     @pytest.mark.asyncio
     async def test_fixedwin_release_access(self, mock_app_for_algo, sample_query_with_rate_limit):
@@ -289,11 +253,7 @@ class TestFixedWindowAlgo:
         await algo.initialize()
 
         # release_access is empty in current implementation
-        await algo.release_access(
-            sample_query_with_rate_limit,
-            provider_session.LauncherTypes.PERSON,
-            '12345'
-        )
+        await algo.release_access(sample_query_with_rate_limit, provider_session.LauncherTypes.PERSON, '12345')
 
         # Should not raise or change state
         assert 'person_12345' not in algo.containers

tests/unit_tests/pipeline/test_wrapper.py

@@ -55,7 +55,7 @@ def make_session():
         launcher_type=provider_session.LauncherTypes.PERSON,
         launcher_id=12345,
         sender_id=12345,
-        use_prompt_name="default",
+        use_prompt_name='default',
         using_conversation=None,
         conversations=[],
     )
@@ -93,11 +93,9 @@ class TestResponseWrapperMessageChain:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
-        query.resp_messages = [
-            platform_message.MessageChain([platform_message.Plain(text="response")])
-        ]
+        query.resp_messages = [platform_message.MessageChain([platform_message.Plain(text='response')])]
         query.resp_message_chain = []
 
         results = []
@@ -125,7 +123,7 @@ class TestResponseWrapperCommand:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -133,7 +131,7 @@ class TestResponseWrapperCommand:
         command_resp = Mock()
         command_resp.role = 'command'
         command_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Help info")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Help info')])
         )
         query.resp_messages = [command_resp]
 
@@ -163,7 +161,7 @@ class TestResponseWrapperPlugin:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -171,7 +169,7 @@ class TestResponseWrapperPlugin:
         plugin_resp = Mock()
         plugin_resp.role = 'plugin'
         plugin_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Plugin response")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Plugin response')])
         )
         query.resp_messages = [plugin_resp]
 
@@ -211,17 +209,17 @@ class TestResponseWrapperAssistant:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
         # Create assistant response with content
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Hello back!"
+        assistant_resp.content = 'Hello back!'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Hello back!")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Hello back!')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -247,7 +245,7 @@ class TestResponseWrapperAssistant:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -292,7 +290,7 @@ class TestResponseWrapperAssistant:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
@@ -303,10 +301,10 @@ class TestResponseWrapperAssistant:
 
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Processing..."
+        assistant_resp.content = 'Processing...'
         assistant_resp.tool_calls = [mock_tool_call]
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Processing...")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Processing...')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -346,17 +344,17 @@ class TestResponseWrapperInterrupt:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
         # Create assistant response with content
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Hello!"
+        assistant_resp.content = 'Hello!'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Hello!")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Hello!')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -384,7 +382,7 @@ class TestResponseWrapperCustomReply:
         app.sess_mgr.get_session = AsyncMock(return_value=session)
 
         # Mock plugin connector with custom reply
-        custom_chain = platform_message.MessageChain([platform_message.Plain(text="Custom reply")])
+        custom_chain = platform_message.MessageChain([platform_message.Plain(text='Custom reply')])
         mock_event_ctx = Mock()
         mock_event_ctx.is_prevented_default = Mock(return_value=False)
         mock_event_ctx.event = Mock()
@@ -397,17 +395,17 @@ class TestResponseWrapperCustomReply:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
 
         # Create assistant response
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Default reply"
+        assistant_resp.content = 'Default reply'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Default reply")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Default reply')])
         )
         query.resp_messages = [assistant_resp]
 
@@ -421,7 +419,7 @@ class TestResponseWrapperCustomReply:
         assert len(results[0].new_query.resp_message_chain) == 1
         # Should be the custom chain
         chain = results[0].new_query.resp_message_chain[0]
-        assert "Custom reply" in str(chain)
+        assert 'Custom reply' in str(chain)
 
 
 class TestResponseWrapperVariables:
@@ -452,7 +450,7 @@ class TestResponseWrapperVariables:
 
         await stage.initialize(pipeline_config)
 
-        query = text_query("hello")
+        query = text_query('hello')
         query.pipeline_config = pipeline_config
         query.resp_message_chain = []
         query.variables['_pipeline_bound_plugins'] = ['plugin1', 'plugin2']
@@ -460,10 +458,10 @@ class TestResponseWrapperVariables:
         # Create assistant response
         assistant_resp = Mock()
         assistant_resp.role = 'assistant'
-        assistant_resp.content = "Hello"
+        assistant_resp.content = 'Hello'
         assistant_resp.tool_calls = None
         assistant_resp.get_content_platform_message_chain = Mock(
-            return_value=platform_message.MessageChain([platform_message.Plain(text="Hello")])
+            return_value=platform_message.MessageChain([platform_message.Plain(text='Hello')])
         )
         query.resp_messages = [assistant_resp]
 

tests/unit_tests/plugin/test_connector_methods.py

@@ -6,6 +6,7 @@ Tests cover:
 - RAG methods (ingest, retrieve, schema)
 - Disabled plugin early returns
 """
+
 from __future__ import annotations
 
 import pytest
@@ -86,16 +87,12 @@ class TestListPlugins:
             return_value=[
                 {
                     'manifest': {'manifest': {'metadata': {'author': 'a', 'name': 'p1'}}},
-                    'components': [
-                        {'manifest': {'manifest': {'kind': 'Command'}}}
-                    ],
+                    'components': [{'manifest': {'manifest': {'kind': 'Command'}}}],
                     'debug': False,
                 },
                 {
                     'manifest': {'manifest': {'metadata': {'author': 'b', 'name': 'p2'}}},
-                    'components': [
-                        {'manifest': {'manifest': {'kind': 'Tool'}}}
-                    ],
+                    'components': [{'manifest': {'manifest': {'kind': 'Tool'}}}],
                     'debug': False,
                 },
             ]
@@ -127,9 +124,7 @@ class TestListPlugins:
                 },
             ]
         )
-        connector.ap.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(__iter__=lambda self: iter([]))
-        )
+        connector.ap.persistence_mgr.execute_async = AsyncMock(return_value=Mock(__iter__=lambda self: iter([])))
 
         result = await connector.list_plugins()
 
@@ -230,7 +225,8 @@ class TestCallParser:
         )
 
         connector.handler.parse_document.assert_called_once_with(
-            'author', 'parser',
+            'author',
+            'parser',
             {'mime_type': 'text/plain', 'filename': 'test.txt'},
             b'file content',
         )
@@ -251,9 +247,7 @@ class TestRAGMethods:
 
         result = await connector.call_rag_ingest('author/engine', {'file': 'test.pdf'})
 
-        connector.handler.rag_ingest_document.assert_called_once_with(
-            'author', 'engine', {'file': 'test.pdf'}
-        )
+        connector.handler.rag_ingest_document.assert_called_once_with('author', 'engine', {'file': 'test.pdf'})
         assert result['status'] == 'success'
 
     @pytest.mark.asyncio
@@ -264,14 +258,16 @@ class TestRAGMethods:
 
         connector.handler = AsyncMock()
         connector.handler.retrieve_knowledge = AsyncMock(
-            return_value={'results': [{'id': 'doc1', 'content': [{'type': 'text', 'text': 'test'}], 'metadata': {}, 'distance': 0.1}]}
+            return_value={
+                'results': [
+                    {'id': 'doc1', 'content': [{'type': 'text', 'text': 'test'}], 'metadata': {}, 'distance': 0.1}
+                ]
+            }
         )
 
         result = await connector.call_rag_retrieve('author/engine', {'query': 'test'})
 
-        connector.handler.retrieve_knowledge.assert_called_once_with(
-            'author', 'engine', '', {'query': 'test'}
-        )
+        connector.handler.retrieve_knowledge.assert_called_once_with('author', 'engine', '', {'query': 'test'})
         assert result == {
             'results': [
                 {
@@ -290,9 +286,7 @@ class TestRAGMethods:
         connector = create_mock_connector()
 
         connector.handler = AsyncMock()
-        connector.handler.get_rag_creation_schema = AsyncMock(
-            return_value={'properties': {'name': {'type': 'string'}}}
-        )
+        connector.handler.get_rag_creation_schema = AsyncMock(return_value={'properties': {'name': {'type': 'string'}}})
 
         result = await connector.get_rag_creation_schema('author/engine')
 
@@ -326,9 +320,7 @@ class TestRAGMethods:
 
         await connector.rag_on_kb_create('author/engine', 'kb-uuid', {'model': 'test'})
 
-        connector.handler.rag_on_kb_create.assert_called_once_with(
-            'author', 'engine', 'kb-uuid', {'model': 'test'}
-        )
+        connector.handler.rag_on_kb_create.assert_called_once_with('author', 'engine', 'kb-uuid', {'model': 'test'})
 
     @pytest.mark.asyncio
     async def test_rag_on_kb_delete(self):
@@ -354,9 +346,7 @@ class TestRAGMethods:
 
         result = await connector.call_rag_delete_document('author/engine', 'doc-uuid', 'kb-uuid')
 
-        connector.handler.rag_delete_document.assert_called_once_with(
-            'author', 'engine', 'doc-uuid', 'kb-uuid'
-        )
+        connector.handler.rag_delete_document.assert_called_once_with('author', 'engine', 'doc-uuid', 'kb-uuid')
         assert result is True
 
 
@@ -446,9 +436,7 @@ class TestGetPluginInfo:
         connector = create_mock_connector()
 
         connector.handler = AsyncMock()
-        connector.handler.get_plugin_info = AsyncMock(
-            return_value={'manifest': {'metadata': {'name': 'plugin'}}}
-        )
+        connector.handler.get_plugin_info = AsyncMock(return_value={'manifest': {'metadata': {'name': 'plugin'}}})
 
         result = await connector.get_plugin_info('author', 'plugin')
 
@@ -470,9 +458,7 @@ class TestSetPluginConfig:
 
         await connector.set_plugin_config('author', 'plugin', {'setting': 'value'})
 
-        connector.handler.set_plugin_config.assert_called_once_with(
-            'author', 'plugin', {'setting': 'value'}
-        )
+        connector.handler.set_plugin_config.assert_called_once_with('author', 'plugin', {'setting': 'value'})
 
 
 class TestPingPluginRuntime:

tests/unit_tests/plugin/test_connector_static.py

@@ -3,6 +3,7 @@
 Tests cover:
 - _parse_plugin_id() parsing and validation
 """
+
 from __future__ import annotations
 
 import pytest

tests/unit_tests/plugin/test_extract_deps.py

@@ -6,6 +6,7 @@ Tests cover:
 - Handling missing requirements.txt
 - Handling empty/malformed requirements.txt
 """
+
 from __future__ import annotations
 
 import zipfile
@@ -82,13 +83,13 @@ class TestExtractDepsMetadata:
         """Test that comments and empty lines are filtered."""
         connector_instance = create_mock_connector()
 
-        requirements = '''# This is a comment
+        requirements = """# This is a comment
 requests>=2.0
 
 # Another comment
 flask==1.0
 
-numpy'''
+numpy"""
         zip_bytes = create_zip_with_requirements(requirements)
 
         task_context = Mock()
@@ -147,9 +148,9 @@ numpy'''
         """Test handling requirements.txt with only comments."""
         connector_instance = create_mock_connector()
 
-        requirements = '''# Comment 1
+        requirements = """# Comment 1
 # Comment 2
-# Comment 3'''
+# Comment 3"""
         zip_bytes = create_zip_with_requirements(requirements)
 
         task_context = Mock()

tests/unit_tests/plugin/test_handler.py

@@ -40,11 +40,13 @@ class TestHandlerQueryVariables:
         """Test set_query_var returns error when query not found."""
         runtime_handler = make_handler(mock_app)
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value]({
-            'query_id': 'nonexistent-query',
-            'key': 'test_var',
-            'value': 'test_value',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value](
+            {
+                'query_id': 'nonexistent-query',
+                'key': 'test_var',
+                'value': 'test_value',
+            }
+        )
 
         assert response.code != 0
         assert 'nonexistent-query' in response.message
@@ -58,11 +60,13 @@ class TestHandlerQueryVariables:
 
         mock_app.query_pool.cached_queries['test-query'] = mock_query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value]({
-            'query_id': 'test-query',
-            'key': 'test_var',
-            'value': 'test_value',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.SET_QUERY_VAR.value](
+            {
+                'query_id': 'test-query',
+                'key': 'test_var',
+                'value': 'test_value',
+            }
+        )
 
         assert response.code == 0
         assert mock_query.variables['test_var'] == 'test_value'
@@ -76,10 +80,12 @@ class TestHandlerQueryVariables:
 
         mock_app.query_pool.cached_queries['test-query'] = mock_query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VAR.value]({
-            'query_id': 'test-query',
-            'key': 'existing_var',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VAR.value](
+            {
+                'query_id': 'test-query',
+                'key': 'existing_var',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {'value': 'existing_value'}
@@ -93,9 +99,11 @@ class TestHandlerQueryVariables:
 
         mock_app.query_pool.cached_queries['test-query'] = mock_query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VARS.value]({
-            'query_id': 'test-query',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_QUERY_VARS.value](
+            {
+                'query_id': 'test-query',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {'vars': mock_query.variables}
@@ -108,7 +116,7 @@ class TestHandlerRagErrorResponse:
         """Test basic error response creation."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = Exception("test error")
+        error = Exception('test error')
         response = _make_rag_error_response(error, 'TestError')
 
         # ActionResponse is a pydantic model, check message field
@@ -120,13 +128,8 @@ class TestHandlerRagErrorResponse:
         """Test error response with extra context."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = ValueError("invalid input")
-        response = _make_rag_error_response(
-            error,
-            'ValidationError',
-            field='name',
-            value='test'
-        )
+        error = ValueError('invalid input')
+        response = _make_rag_error_response(error, 'ValidationError', field='name', value='test')
 
         assert 'ValidationError' in response.message
         assert 'field=name' in response.message
@@ -137,7 +140,7 @@ class TestHandlerRagErrorResponse:
         """Test error response includes exception type."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = RuntimeError("connection failed")
+        error = RuntimeError('connection failed')
         response = _make_rag_error_response(error, 'ConnectionError')
 
         assert 'RuntimeError' in response.message
@@ -148,7 +151,7 @@ class TestHandlerRagErrorResponse:
         """Test error response with no extra context."""
         from langbot.pkg.plugin.handler import _make_rag_error_response
 
-        error = KeyError("missing_key")
+        error = KeyError('missing_key')
         response = _make_rag_error_response(error, 'LookupError')
 
         # No context parts means no brackets

tests/unit_tests/plugin/test_handler_actions.py

@@ -47,12 +47,14 @@ class TestInitializePluginSettings:
             Mock(),
         ]
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-            'install_source': 'local',
-            'install_info': {'path': '/test'},
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+                'install_source': 'local',
+                'install_info': {'path': '/test'},
+            }
+        )
 
         assert response.code == 0
         assert app.persistence_mgr.execute_async.await_count == 2
@@ -82,12 +84,14 @@ class TestInitializePluginSettings:
             Mock(),
         ]
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-            'install_source': 'github',
-            'install_info': {'repo': 'author/name'},
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.INITIALIZE_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+                'install_source': 'github',
+                'install_info': {'repo': 'author/name'},
+            }
+        )
 
         assert response.code == 0
         assert app.persistence_mgr.execute_async.await_count == 3
@@ -161,9 +165,7 @@ class TestSetBinaryStorage:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result(SimpleNamespace(value=b'old'))
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](
-            self.payload(b'new')
-        )
+        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](self.payload(b'new'))
 
         assert response.code == 0
         assert app.persistence_mgr.execute_async.await_count == 2
@@ -203,9 +205,7 @@ class TestSetBinaryStorage:
         runtime_handler = make_handler(app)
         app.instance_config.data['plugin']['binary_storage']['max_value_bytes'] = 0
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](
-            self.payload(b'x')
-        )
+        response = await runtime_handler.actions[RuntimeToLangBotAction.SET_BINARY_STORAGE.value](self.payload(b'x'))
 
         assert response.code != 0
         assert '1 > 0 bytes' in response.message
@@ -228,10 +228,12 @@ class TestGetPluginSettings:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result()
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {
@@ -255,10 +257,12 @@ class TestGetPluginSettings:
         )
         app.persistence_mgr.execute_async.return_value = make_result(setting)
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value]({
-            'plugin_author': 'test-author',
-            'plugin_name': 'test-plugin',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_PLUGIN_SETTINGS.value](
+            {
+                'plugin_author': 'test-author',
+                'plugin_name': 'test-plugin',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {
@@ -286,11 +290,13 @@ class TestGetBinaryStorage:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result(SimpleNamespace(value=b'test binary content'))
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value]({
-            'key': 'test-key',
-            'owner_type': 'plugin',
-            'owner': 'test-owner',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value](
+            {
+                'key': 'test-key',
+                'owner_type': 'plugin',
+                'owner': 'test-owner',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {
@@ -303,11 +309,13 @@ class TestGetBinaryStorage:
         runtime_handler = make_handler(app)
         app.persistence_mgr.execute_async.return_value = make_result()
 
-        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value]({
-            'key': 'test-key',
-            'owner_type': 'plugin',
-            'owner': 'test-owner',
-        })
+        response = await runtime_handler.actions[RuntimeToLangBotAction.GET_BINARY_STORAGE.value](
+            {
+                'key': 'test-key',
+                'owner_type': 'plugin',
+                'owner': 'test-owner',
+            }
+        )
 
         assert response.code != 0
         assert 'Storage with key test-key not found' in response.message
@@ -329,9 +337,11 @@ class TestHandlerQueryLookup:
         """Query-bound actions return error when query_id is not cached."""
         runtime_handler = make_handler(app)
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value]({
-            'query_id': 'nonexistent-query',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value](
+            {
+                'query_id': 'nonexistent-query',
+            }
+        )
 
         assert response.code != 0
         assert 'nonexistent-query' in response.message
@@ -343,9 +353,11 @@ class TestHandlerQueryLookup:
         query = SimpleNamespace(variables={}, bot_uuid='test-bot-uuid')
         app.query_pool.cached_queries['existing-query'] = query
 
-        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value]({
-            'query_id': 'existing-query',
-        })
+        response = await runtime_handler.actions[PluginToRuntimeAction.GET_BOT_UUID.value](
+            {
+                'query_id': 'existing-query',
+            }
+        )
 
         assert response.code == 0
         assert response.data == {'bot_uuid': 'test-bot-uuid'}

tests/unit_tests/plugin/test_handler_helpers.py

@@ -4,6 +4,7 @@ Tests cover:
 - _make_rag_error_response() helper function
 - RuntimeConnectionHandler cleanup_plugin_data method
 """
+
 from __future__ import annotations
 
 import pytest
@@ -23,7 +24,7 @@ class TestMakeRagErrorResponse:
         """Test basic error response creation."""
         handler = get_handler_module()
 
-        error = ValueError("test error message")
+        error = ValueError('test error message')
         result = handler._make_rag_error_response(error, 'TestError')
 
         # ActionResponse.error() returns code=1 (error status)
@@ -36,7 +37,7 @@ class TestMakeRagErrorResponse:
         """Test that error type is included in message."""
         handler = get_handler_module()
 
-        error = RuntimeError("something went wrong")
+        error = RuntimeError('something went wrong')
         result = handler._make_rag_error_response(error, 'VectorStoreError')
 
         assert '[VectorStoreError/RuntimeError]' in result.message
@@ -45,7 +46,7 @@ class TestMakeRagErrorResponse:
         """Test that extra context fields are included."""
         handler = get_handler_module()
 
-        error = Exception("embedding failed")
+        error = Exception('embedding failed')
         result = handler._make_rag_error_response(
             error,
             'EmbeddingError',
@@ -71,7 +72,7 @@ class TestMakeRagErrorResponse:
         """Test multiple context fields are comma separated."""
         handler = get_handler_module()
 
-        error = IOError("file not found")
+        error = IOError('file not found')
         result = handler._make_rag_error_response(
             error,
             'FileServiceError',
@@ -119,9 +120,7 @@ class TestCleanupPluginData:
         handler_instance = Mock(spec=handler_module.RuntimeConnectionHandler)
         handler_instance.ap = mock_app
 
-        await handler_module.RuntimeConnectionHandler.cleanup_plugin_data(
-            handler_instance, 'author', 'plugin-name'
-        )
+        await handler_module.RuntimeConnectionHandler.cleanup_plugin_data(handler_instance, 'author', 'plugin-name')
 
         # Should have at least 2 calls: one for settings, one for binary storage
-        assert mock_app.persistence_mgr.execute_async.call_count >= 2
+        assert mock_app.persistence_mgr.execute_async.call_count >= 2

tests/unit_tests/provider/conftest.py

@@ -88,7 +88,10 @@ class AnotherFakeRequester(requester.ProviderAPIRequester):
 
     async def invoke_llm(self, query, model, messages, funcs=None, extra_args={}, remove_think=False):
         import langbot_plugin.api.entities.builtin.provider.message as provider_message
-        return provider_message.Message(role='assistant', content=[provider_message.ContentElement(type='text', text='Another response')])
+
+        return provider_message.Message(
+            role='assistant', content=[provider_message.ContentElement(type='text', text='Another response')]
+        )
 
     async def invoke_rerank(self, model, query: str, documents: list, extra_args={}):
         """Return fake rerank results."""
@@ -135,8 +138,10 @@ def mock_app_for_modelmgr():
 
     # Fake persistence manager - returns empty results by default
     app.persistence_mgr = SimpleNamespace()
+
     async def default_execute(query):
         return _make_mock_result([])
+
     app.persistence_mgr.execute_async = AsyncMock(side_effect=default_execute)
 
     # Fake discover engine
@@ -165,9 +170,7 @@ def fake_requester_registry(mock_app_for_modelmgr):
     fake_component = _create_fake_component('fake-requester', FakeProviderAPIRequester)
     another_component = _create_fake_component('another-fake-requester', AnotherFakeRequester)
 
-    app.discover.get_components_by_kind = Mock(
-        return_value=[fake_component, another_component]
-    )
+    app.discover.get_components_by_kind = Mock(return_value=[fake_component, another_component])
 
     model_mgr = ModelManager(app)
     return model_mgr

tests/unit_tests/provider/runners/test_difysvapi_runner.py

@@ -26,7 +26,7 @@ class TestDifyExtractTextOutput:
                     'base-url': 'https://api.dify.ai',
                 }
             },
-            'output': {'misc': {}}
+            'output': {'misc': {}},
         }
 
         runner = DifyServiceAPIRunner(mock_app, pipeline_config)
@@ -111,7 +111,7 @@ class TestDifyRunnerConfigValidation:
                     'base-url': 'https://api.dify.ai',
                 }
             },
-            'output': {'misc': {}}
+            'output': {'misc': {}},
         }
 
         with pytest.raises(DifyAPIError, match='不支持'):
@@ -134,7 +134,7 @@ class TestDifyRunnerConfigValidation:
                         'base-url': 'https://api.dify.ai',
                     }
                 },
-                'output': {'misc': {}}
+                'output': {'misc': {}},
             }
 
             runner = DifyServiceAPIRunner(mock_app, pipeline_config)
@@ -160,10 +160,10 @@ class TestDifyRunnerInit:
                     'base-url': 'https://api.dify.ai',
                 }
             },
-            'output': {'misc': {}}
+            'output': {'misc': {}},
         }
 
         runner = DifyServiceAPIRunner(mock_app, pipeline_config)
 
         assert runner.pipeline_config == pipeline_config
-        assert runner.ap == mock_app
+        assert runner.ap == mock_app

tests/unit_tests/provider/test_litellmchat.py

@@ -1062,9 +1062,7 @@ class TestScanModels:
 
         with patch.object(litellmchat.litellm, 'get_model_info') as mock_get_model_info:
             mock_get_model_info.side_effect = (
-                lambda model: {'max_input_tokens': 131072}
-                if model == 'moonshot/moonshot-v1-128k'
-                else {}
+                lambda model: {'max_input_tokens': 131072} if model == 'moonshot/moonshot-v1-128k' else {}
             )
 
             assert requester._safe_context_length('moonshot-v1-128k') == 131072

tests/unit_tests/provider/test_model_manager.py

@@ -635,7 +635,9 @@ async def test_model_manager_reload_provider_not_found(fake_requester_registry):
 
 
 @pytest.mark.asyncio
-async def test_model_manager_load_llm_model_with_provider(fake_requester_registry, fake_persistence_data, runtime_provider):
+async def test_model_manager_load_llm_model_with_provider(
+    fake_requester_registry, fake_persistence_data, runtime_provider
+):
     """Test ModelManager.load_llm_model_with_provider creates RuntimeLLMModel."""
     model_mgr = fake_requester_registry
 
@@ -648,7 +650,9 @@ async def test_model_manager_load_llm_model_with_provider(fake_requester_registr
 
 
 @pytest.mark.asyncio
-async def test_model_manager_load_llm_model_with_provider_from_row(fake_requester_registry, fake_persistence_data, runtime_provider):
+async def test_model_manager_load_llm_model_with_provider_from_row(
+    fake_requester_registry, fake_persistence_data, runtime_provider
+):
     """Test ModelManager.load_llm_model_with_provider handles Row objects."""
     model_mgr = fake_requester_registry
 
@@ -661,7 +665,9 @@ async def test_model_manager_load_llm_model_with_provider_from_row(fake_requeste
 
 
 @pytest.mark.asyncio
-async def test_model_manager_load_embedding_model_with_provider(fake_requester_registry, fake_persistence_data, runtime_provider):
+async def test_model_manager_load_embedding_model_with_provider(
+    fake_requester_registry, fake_persistence_data, runtime_provider
+):
     """Test ModelManager.load_embedding_model_with_provider creates RuntimeEmbeddingModel."""
     model_mgr = fake_requester_registry
 

tests/unit_tests/provider/test_requester_base.py

@@ -43,6 +43,7 @@ class TestableRequester(requester.ProviderAPIRequester):
         remove_think=False,
     ):
         import langbot_plugin.api.entities.builtin.provider.message as provider_message
+
         return provider_message.Message(
             role='assistant',
             content=[provider_message.ContentElement(type='text', text='Testable response')],
@@ -289,7 +290,9 @@ async def test_runtime_provider_invoke_llm_delegates(runtime_provider, runtime_l
         current_stage_name=None,
     )
 
-    messages = [provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])]
+    messages = [
+        provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])
+    ]
 
     result = await provider.invoke_llm(query, runtime_llm_model, messages)
 
@@ -330,7 +333,9 @@ async def test_runtime_provider_invoke_llm_stream_yields_chunks(runtime_provider
         current_stage_name=None,
     )
 
-    messages = [provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])]
+    messages = [
+        provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])
+    ]
 
     chunks = []
     async for chunk in provider.invoke_llm_stream(query, runtime_llm_model, messages):
@@ -576,7 +581,9 @@ async def test_runtime_provider_invoke_llm_propagates_error(mock_app_for_modelmg
         current_stage_name=None,
     )
 
-    messages = [provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])]
+    messages = [
+        provider_message.Message(role='user', content=[provider_message.ContentElement(type='text', text='Hello')])
+    ]
 
     with pytest.raises(RequesterError):
         await provider.invoke_llm(query, model, messages)

tests/unit_tests/provider/test_session_manager.py

@@ -5,6 +5,7 @@ Tests cover:
 - Conversation creation with prompts
 - Session concurrency semaphore
 """
+
 from __future__ import annotations
 
 import pytest
@@ -60,11 +61,7 @@ class TestSessionManagerGetSession:
         """Create mock app with instance config."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {
-            'concurrency': {
-                'session': 5
-            }
-        }
+        mock_app.instance_config.data = {'concurrency': {'session': 5}}
         return mock_app
 
     @pytest.fixture
@@ -173,11 +170,7 @@ class TestSessionManagerGetConversation:
         """Create mock app with instance config."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {
-            'concurrency': {
-                'session': 5
-            }
-        }
+        mock_app.instance_config.data = {'concurrency': {'session': 5}}
         return mock_app
 
     @pytest.fixture
@@ -201,17 +194,13 @@ class TestSessionManagerGetConversation:
         return query
 
     @pytest.mark.asyncio
-    async def test_creates_conversation_with_prompt(
-        self, mock_app_with_config, sample_query, sample_session
-    ):
+    async def test_creates_conversation_with_prompt(self, mock_app_with_config, sample_query, sample_session):
         """Test that get_conversation creates conversation with prompt."""
         sessionmgr = get_session_module()
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
         pipeline_uuid = 'pipeline-123'
         bot_uuid = 'bot-123'
 
@@ -234,21 +223,15 @@ class TestSessionManagerGetConversation:
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
         pipeline_uuid = 'pipeline-123'
         bot_uuid = 'bot-123'
 
         # First call creates conversation
-        conv1 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid
-        )
+        conv1 = await manager.get_conversation(sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid)
 
         # Second call with same pipeline should return same conversation
-        conv2 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid
-        )
+        conv2 = await manager.get_conversation(sample_query, sample_session, prompt_config, pipeline_uuid, bot_uuid)
 
         assert conv1 is conv2
         assert len(sample_session.conversations) == 1
@@ -262,36 +245,26 @@ class TestSessionManagerGetConversation:
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
 
         # First call with pipeline1
-        conv1 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, 'pipeline-1', 'bot-1'
-        )
+        conv1 = await manager.get_conversation(sample_query, sample_session, prompt_config, 'pipeline-1', 'bot-1')
 
         # Second call with different pipeline should create new conversation
-        conv2 = await manager.get_conversation(
-            sample_query, sample_session, prompt_config, 'pipeline-2', 'bot-2'
-        )
+        conv2 = await manager.get_conversation(sample_query, sample_session, prompt_config, 'pipeline-2', 'bot-2')
 
         assert conv1 is not conv2
         assert len(sample_session.conversations) == 2
         assert sample_session.using_conversation is conv2
 
     @pytest.mark.asyncio
-    async def test_conversation_has_empty_messages(
-        self, mock_app_with_config, sample_query, sample_session
-    ):
+    async def test_conversation_has_empty_messages(self, mock_app_with_config, sample_query, sample_session):
         """Test that created conversation has empty messages list."""
         sessionmgr = get_session_module()
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'You are a helpful assistant.'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'You are a helpful assistant.'}]
 
         conversation = await manager.get_conversation(
             sample_query, sample_session, prompt_config, 'pipeline-123', 'bot-123'
@@ -300,22 +273,17 @@ class TestSessionManagerGetConversation:
         assert conversation.messages == []
 
     @pytest.mark.asyncio
-    async def test_prompt_messages_from_config(
-        self, mock_app_with_config, sample_query, sample_session
-    ):
+    async def test_prompt_messages_from_config(self, mock_app_with_config, sample_query, sample_session):
         """Test that prompt messages are created from prompt_config."""
         sessionmgr = get_session_module()
 
         manager = sessionmgr.SessionManager(mock_app_with_config)
 
-        prompt_config = [
-            {'role': 'system', 'content': 'System message'},
-            {'role': 'user', 'content': 'User message'}
-        ]
+        prompt_config = [{'role': 'system', 'content': 'System message'}, {'role': 'user', 'content': 'User message'}]
 
         conversation = await manager.get_conversation(
             sample_query, sample_session, prompt_config, 'pipeline-123', 'bot-123'
         )
 
         assert conversation.prompt.name == 'default'
-        assert len(conversation.prompt.messages) == 2
+        assert len(conversation.prompt.messages) == 2

tests/unit_tests/provider/test_tool_manager.py

@@ -136,6 +136,7 @@ class TestToolManagerSchemaGeneration:
             assert 'description' in func
             assert 'parameters' in func
 
+
 class TestToolManagerExecuteFuncCall:
     """Tests for execute_func_call method."""
 

tests/unit_tests/rag/test_i18n_conversion.py

@@ -3,6 +3,7 @@
 Tests cover:
 - _to_i18n_name() static method
 """
+
 from __future__ import annotations
 
 from importlib import import_module
@@ -60,4 +61,4 @@ class TestToI18nName:
         kbmgr = get_kbmgr_module()
         input_dict = {'en_US': 'English', 'extra_key': 'extra_value'}
         result = kbmgr.RAGManager._to_i18n_name(input_dict)
-        assert result == {'en_US': 'English', 'extra_key': 'extra_value'}
+        assert result == {'en_US': 'English', 'extra_key': 'extra_value'}

tests/unit_tests/rag/test_kbmgr.py

@@ -6,6 +6,7 @@ Tests cover:
 - Knowledge engine enrichment
 - KB loading and removal
 """
+
 from __future__ import annotations
 
 import pytest
@@ -101,13 +102,9 @@ class TestRAGManagerCreateKnowledgeBase:
         rag_module = get_rag_module()
         mock_app = create_mock_app()
 
-        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(
-            return_value=[{'plugin_id': 'author/engine'}]
-        )
+        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(return_value=[{'plugin_id': 'author/engine'}])
         mock_app.persistence_mgr.execute_async = AsyncMock()
-        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(
-            side_effect=Exception('Plugin error')
-        )
+        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(side_effect=Exception('Plugin error'))
 
         manager = rag_module.RAGManager(mock_app)
 
@@ -128,9 +125,7 @@ class TestRAGManagerCreateKnowledgeBase:
         rag_module = get_rag_module()
         mock_app = create_mock_app()
 
-        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(
-            return_value=[{'plugin_id': 'author/engine'}]
-        )
+        mock_app.plugin_connector.list_knowledge_engines = AsyncMock(return_value=[{'plugin_id': 'author/engine'}])
         mock_app.persistence_mgr.execute_async = AsyncMock()
         mock_app.plugin_connector.rag_on_kb_create = AsyncMock()
 
@@ -206,9 +201,7 @@ class TestRuntimeKnowledgeBaseOnKBCreate:
         mock_app = create_mock_app()
         mock_kb = create_mock_kb_entity()
 
-        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(
-            side_effect=Exception('Plugin failed')
-        )
+        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(side_effect=Exception('Plugin failed'))
 
         runtime_kb = rag_module.RuntimeKnowledgeBase(mock_app, mock_kb)
 
@@ -245,9 +238,7 @@ class TestRuntimeKnowledgeBaseIngestDocument:
         mock_app = create_mock_app()
         mock_kb = create_mock_kb_entity()
 
-        mock_app.plugin_connector.call_rag_ingest = AsyncMock(
-            return_value={'status': 'success'}
-        )
+        mock_app.plugin_connector.call_rag_ingest = AsyncMock(return_value={'status': 'success'})
 
         runtime_kb = rag_module.RuntimeKnowledgeBase(mock_app, mock_kb)
 
@@ -304,14 +295,10 @@ class TestRAGManagerLoadKnowledgeBasesFromDB:
         # KB that will cause initialize to fail
         mock_kb = create_mock_kb_entity()
 
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(all=Mock(return_value=[mock_kb]))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(all=Mock(return_value=[mock_kb])))
 
         # Make initialize fail by having plugin_connector throw error
-        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(
-            side_effect=Exception('Init failed')
-        )
+        mock_app.plugin_connector.rag_on_kb_create = AsyncMock(side_effect=Exception('Init failed'))
 
         manager = rag_module.RAGManager(mock_app)
         # Should not raise - errors are caught
@@ -411,9 +398,7 @@ class TestRuntimeKnowledgeBaseRetrieve:
         mock_kb = create_mock_kb_entity()
         mock_kb.retrieval_settings = {}
 
-        mock_app.plugin_connector.call_rag_retrieve = AsyncMock(
-            return_value={'results': []}
-        )
+        mock_app.plugin_connector.call_rag_retrieve = AsyncMock(return_value={'results': []})
 
         runtime_kb = rag_module.RuntimeKnowledgeBase(mock_app, mock_kb)
 
@@ -682,9 +667,7 @@ class TestRAGManagerGetAllDetails:
         """Test returns empty list when no knowledge bases."""
         rag_module = get_rag_module()
         mock_app = create_mock_app()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(all=Mock(return_value=[]))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(all=Mock(return_value=[])))
 
         manager = rag_module.RAGManager(mock_app)
         result = await manager.get_all_knowledge_base_details()
@@ -699,9 +682,7 @@ class TestRAGManagerGetAllDetails:
 
         # Mock DB result
         mock_kb_row = Mock()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(all=Mock(return_value=[mock_kb_row]))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(all=Mock(return_value=[mock_kb_row])))
         mock_app.persistence_mgr.serialize_model = Mock(
             return_value={'uuid': 'kb1', 'knowledge_engine_plugin_id': 'author/engine'}
         )
@@ -724,9 +705,7 @@ class TestRAGManagerGetDetails:
         """Test returns None when KB doesn't exist."""
         rag_module = get_rag_module()
         mock_app = create_mock_app()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(first=Mock(return_value=None))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(first=Mock(return_value=None)))
 
         manager = rag_module.RAGManager(mock_app)
         result = await manager.get_knowledge_base_details('nonexistent')
@@ -740,9 +719,7 @@ class TestRAGManagerGetDetails:
         mock_app = create_mock_app()
 
         mock_kb_row = Mock()
-        mock_app.persistence_mgr.execute_async = AsyncMock(
-            return_value=Mock(first=Mock(return_value=mock_kb_row))
-        )
+        mock_app.persistence_mgr.execute_async = AsyncMock(return_value=Mock(first=Mock(return_value=mock_kb_row)))
         mock_app.persistence_mgr.serialize_model = Mock(
             return_value={'uuid': 'kb1', 'knowledge_engine_plugin_id': 'author/engine'}
         )
@@ -791,4 +768,4 @@ class TestRAGManagerLoadKnowledgeBase:
 
         await manager.load_knowledge_base(kb_dict)
 
-        assert 'kb-uuid' in manager.knowledge_bases
+        assert 'kb-uuid' in manager.knowledge_bases

tests/unit_tests/rag/test_runtime_service.py

@@ -121,10 +121,12 @@ class TestRAGRuntimeServiceVectorSearch:
         """Create mock app."""
         mock_app = MagicMock()
         mock_app.vector_db_mgr = MagicMock()
-        mock_app.vector_db_mgr.search = AsyncMock(return_value=[
-            {'id': 'id1', 'distance': 0.1, 'metadata': {'file_id': 'abc'}},
-            {'id': 'id2', 'distance': 0.2, 'metadata': {'file_id': 'def'}},
-        ])
+        mock_app.vector_db_mgr.search = AsyncMock(
+            return_value=[
+                {'id': 'id1', 'distance': 0.1, 'metadata': {'file_id': 'abc'}},
+                {'id': 'id2', 'distance': 0.2, 'metadata': {'file_id': 'def'}},
+            ]
+        )
         return mock_app
 
     def _make_rag_import_mocks(self):
@@ -301,10 +303,7 @@ class TestRAGRuntimeServiceVectorList:
         mock_app = MagicMock()
         mock_app.vector_db_mgr = MagicMock()
         mock_app.vector_db_mgr.list_by_filter = AsyncMock(
-            return_value=(
-                [{'id': 'id1', 'metadata': {'file_id': 'abc'}}],
-                10
-            )
+            return_value=([{'id': 'id1', 'metadata': {'file_id': 'abc'}}], 10)
         )
         return mock_app
 

tests/unit_tests/storage/test_localstorage_path_traversal.py

@@ -21,8 +21,8 @@ from langbot.pkg.storage.providers.localstorage import LocalStorageProvider
 @pytest.fixture
 def storage_provider(tmp_path):
     """Create a LocalStorageProvider with a temporary storage path."""
-    storage_path = str(tmp_path / "storage")
-    with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+    storage_path = str(tmp_path / 'storage')
+    with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
         mock_app = Mock()
         provider = LocalStorageProvider(mock_app)
         yield provider, storage_path
@@ -35,15 +35,15 @@ class TestPathTraversalPrevention:
     async def test_absolute_path_save_rejected(self, storage_provider, tmp_path):
         """Saving with an absolute path key must be blocked."""
         provider, storage_path = storage_provider
-        target_file = str(tmp_path / "pwned.txt")
+        target_file = str(tmp_path / 'pwned.txt')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError)):
-                await provider.save(target_file, b"malicious content")
+                await provider.save(target_file, b'malicious content')
 
         # The file must NOT exist outside the storage directory
         assert not os.path.exists(target_file), (
-            f"Path traversal succeeded: file was written outside storage to {target_file}"
+            f'Path traversal succeeded: file was written outside storage to {target_file}'
         )
 
     @pytest.mark.asyncio
@@ -52,32 +52,28 @@ class TestPathTraversalPrevention:
         provider, storage_path = storage_provider
 
         # Create a file outside the storage directory
-        target_file = str(tmp_path / "secret.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"secret data")
+        target_file = str(tmp_path / 'secret.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'secret data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 data = await provider.load(target_file)
-                assert data != b"secret data", (
-                    "Path traversal succeeded: read file outside storage"
-                )
+                assert data != b'secret data', 'Path traversal succeeded: read file outside storage'
 
     @pytest.mark.asyncio
     async def test_absolute_path_exists_rejected(self, storage_provider, tmp_path):
         """Exists check with an absolute path key must be blocked or return False."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "check_me.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"data")
+        target_file = str(tmp_path / 'check_me.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             try:
                 result = await provider.exists(target_file)
-                assert result is False, (
-                    "Path traversal succeeded: exists() returned True for file outside storage"
-                )
+                assert result is False, 'Path traversal succeeded: exists() returned True for file outside storage'
             except (ValueError, PermissionError):
                 pass  # Expected
 
@@ -86,28 +82,26 @@ class TestPathTraversalPrevention:
         """Deleting with an absolute path key must be blocked."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "do_not_delete.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"important data")
+        target_file = str(tmp_path / 'do_not_delete.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'important data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 await provider.delete(target_file)
 
-        assert os.path.exists(target_file), (
-            "Path traversal succeeded: file outside storage was deleted"
-        )
+        assert os.path.exists(target_file), 'Path traversal succeeded: file outside storage was deleted'
 
     @pytest.mark.asyncio
     async def test_absolute_path_size_rejected(self, storage_provider, tmp_path):
         """Size check with an absolute path key must be blocked."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "measure_me.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"some data")
+        target_file = str(tmp_path / 'measure_me.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'some data')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 await provider.size(target_file)
 
@@ -116,41 +110,39 @@ class TestPathTraversalPrevention:
         """Relative path traversal with '..' must be blocked."""
         provider, storage_path = storage_provider
 
-        target_file = str(tmp_path / "above_storage.txt")
-        with open(target_file, "wb") as f:
-            f.write(b"above storage secret")
+        target_file = str(tmp_path / 'above_storage.txt')
+        with open(target_file, 'wb') as f:
+            f.write(b'above storage secret')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
-            relative_key = os.path.join("..", "above_storage.txt")
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
+            relative_key = os.path.join('..', 'above_storage.txt')
             with pytest.raises((ValueError, PermissionError, FileNotFoundError)):
                 data = await provider.load(relative_key)
-                assert data != b"above storage secret"
+                assert data != b'above storage secret'
 
     @pytest.mark.asyncio
     async def test_delete_dir_recursive_traversal_rejected(self, storage_provider, tmp_path):
         """delete_dir_recursive with traversal path must be blocked."""
         provider, storage_path = storage_provider
 
-        outside_dir = tmp_path / "outside_dir"
+        outside_dir = tmp_path / 'outside_dir'
         outside_dir.mkdir()
-        (outside_dir / "file.txt").write_text("important")
+        (outside_dir / 'file.txt').write_text('important')
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             with pytest.raises((ValueError, PermissionError)):
                 await provider.delete_dir_recursive(str(outside_dir))
 
-        assert outside_dir.exists(), (
-            "Path traversal succeeded: directory outside storage was deleted"
-        )
+        assert outside_dir.exists(), 'Path traversal succeeded: directory outside storage was deleted'
 
     @pytest.mark.asyncio
     async def test_legitimate_key_works(self, storage_provider):
         """Normal keys without traversal must still work."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
-            key = "test_image_abc123.png"
-            content = b"PNG image data"
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
+            key = 'test_image_abc123.png'
+            content = b'PNG image data'
 
             await provider.save(key, content)
             assert await provider.exists(key) is True
@@ -166,9 +158,9 @@ class TestPathTraversalPrevention:
         """Keys with legitimate subdirectories must still work."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
-            key = "bot_log_images/img_001.png"
-            content = b"PNG image data"
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
+            key = 'bot_log_images/img_001.png'
+            content = b'PNG image data'
 
             await provider.save(key, content)
             assert await provider.exists(key) is True
@@ -181,33 +173,33 @@ class TestPathTraversalPrevention:
         """delete_dir_recursive should handle non-existing directories gracefully."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             # Try to delete a non-existing directory - should not raise
-            await provider.delete_dir_recursive("nonexistent_dir")
+            await provider.delete_dir_recursive('nonexistent_dir')
 
     @pytest.mark.asyncio
     async def test_delete_dir_recursive_with_files(self, storage_provider):
         """delete_dir_recursive should delete directory with files inside."""
         provider, storage_path = storage_provider
 
-        with patch("langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH", storage_path):
+        with patch('langbot.pkg.storage.providers.localstorage.LOCAL_STORAGE_PATH', storage_path):
             # Create a directory with files
-            key1 = "test_dir/file1.txt"
-            key2 = "test_dir/file2.txt"
-            await provider.save(key1, b"content1")
-            await provider.save(key2, b"content2")
+            key1 = 'test_dir/file1.txt'
+            key2 = 'test_dir/file2.txt'
+            await provider.save(key1, b'content1')
+            await provider.save(key2, b'content2')
 
             # Verify files exist
             assert await provider.exists(key1)
             assert await provider.exists(key2)
 
             # Delete directory recursively
-            await provider.delete_dir_recursive("test_dir")
+            await provider.delete_dir_recursive('test_dir')
 
             # Verify files no longer exist
             assert not await provider.exists(key1)
             assert not await provider.exists(key2)
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])

tests/unit_tests/storage/test_s3storage.py

@@ -8,6 +8,7 @@ Tests cover:
 
 Uses moto library to mock AWS S3 service.
 """
+
 from __future__ import annotations
 
 import pytest
@@ -44,8 +45,10 @@ def mock_app_with_s3_config():
 def s3_mock():
     """Set up moto S3 mock context."""
     from moto import mock_aws
+
     with mock_aws():
         import boto3
+
         # Create bucket for tests that need pre-existing bucket
         s3 = boto3.client('s3', region_name='us-east-1')
         yield s3
@@ -325,4 +328,4 @@ class TestS3StorageProviderErrorHandling:
         await provider.initialize()
 
         with pytest.raises(Exception):
-            await provider.size('nonexistent.txt')
+            await provider.size('nonexistent.txt')

tests/unit_tests/storage/test_storage_manager.py

@@ -31,7 +31,7 @@ class TestStorageMgr:
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(LocalStorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, LocalStorageProvider)
             mock_app.logger.info.assert_called()
@@ -41,12 +41,12 @@ class TestStorageMgr:
         """Should use local storage when explicitly configured."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {"storage": {"use": "local"}}
+        mock_app.instance_config.data = {'storage': {'use': 'local'}}
         mock_app.logger = Mock()
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(LocalStorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, LocalStorageProvider)
 
@@ -55,14 +55,12 @@ class TestStorageMgr:
         """Should use S3 storage when configured."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {
-            "storage": {"use": "s3", "s3": {"endpoint_url": "https://s3.amazonaws.com"}}
-        }
+        mock_app.instance_config.data = {'storage': {'use': 's3', 's3': {'endpoint_url': 'https://s3.amazonaws.com'}}}
         mock_app.logger = Mock()
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(S3StorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(S3StorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, S3StorageProvider)
 
@@ -71,12 +69,12 @@ class TestStorageMgr:
         """Should default to local storage for invalid storage type."""
         mock_app = Mock()
         mock_app.instance_config = Mock()
-        mock_app.instance_config.data = {"storage": {"use": "invalid_type"}}
+        mock_app.instance_config.data = {'storage': {'use': 'invalid_type'}}
         mock_app.logger = Mock()
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(LocalStorageProvider, "initialize", new_callable=AsyncMock):
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock):
             await storage_mgr.initialize()
             assert isinstance(storage_mgr.storage_provider, LocalStorageProvider)
 
@@ -90,9 +88,7 @@ class TestStorageMgr:
 
         storage_mgr = StorageMgr(mock_app)
 
-        with patch.object(
-            LocalStorageProvider, "initialize", new_callable=AsyncMock
-        ) as mock_init:
+        with patch.object(LocalStorageProvider, 'initialize', new_callable=AsyncMock) as mock_init:
             await storage_mgr.initialize()
             mock_init.assert_called_once()
 
@@ -105,8 +101,8 @@ class TestStorageProviderBase:
         mock_app = Mock()
 
         # Use LocalStorageProvider as concrete implementation
-        with patch("os.path.exists", return_value=True):
-            with patch("os.makedirs"):
+        with patch('os.path.exists', return_value=True):
+            with patch('os.makedirs'):
                 provider = LocalStorageProvider(mock_app)
                 assert provider.ap == mock_app
 
@@ -115,12 +111,12 @@ class TestStorageProviderBase:
         """Provider base initialize should be callable and do nothing."""
         mock_app = Mock()
 
-        with patch("os.path.exists", return_value=True):
-            with patch("os.makedirs"):
+        with patch('os.path.exists', return_value=True):
+            with patch('os.makedirs'):
                 provider = LocalStorageProvider(mock_app)
                 # Initialize should not raise
                 await provider.initialize()
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])

tests/unit_tests/telemetry/test_telemetry.py

@@ -8,6 +8,7 @@ Tests cover:
 - HTTP request success/failure scenarios
 - Source code bug: send_tasks should be instance variable
 """
+
 from __future__ import annotations
 
 import pytest
@@ -38,6 +39,7 @@ class TestTelemetryManagerInit:
         manager = telemetry.TelemetryManager(mock_app)
         assert manager.telemetry_config == {}
 
+
 class TestTelemetryManagerInitialize:
     """Tests for initialize() method."""
 
@@ -218,7 +220,7 @@ class TestPayloadSanitization:
 
         # All null string fields should be empty strings
         for field in ['adapter', 'runner', 'runner_category', 'model_name', 'version', 'edition', 'error', 'timestamp']:
-            assert result[field] == '', f"Field {field} should be empty string, got {result[field]}"
+            assert result[field] == '', f'Field {field} should be empty string, got {result[field]}'
 
     @pytest.mark.asyncio
     async def test_sanitize_string_fields_preserve_values(self):
@@ -418,9 +420,7 @@ class TestHTTPScenarios:
         manager.telemetry_config = {'url': 'https://example.com'}
 
         mock_response = Mock(
-            status_code=200,
-            text='{"code": 0, "msg": "success"}',
-            json=Mock(return_value={'code': 0, 'msg': 'success'})
+            status_code=200, text='{"code": 0, "msg": "success"}', json=Mock(return_value={'code': 0, 'msg': 'success'})
         )
 
         mock_client = Mock()
@@ -448,9 +448,7 @@ class TestHTTPScenarios:
         manager.telemetry_config = {'url': 'https://example.com'}
 
         mock_response = Mock(
-            status_code=500,
-            text='Internal Server Error',
-            json=Mock(return_value={'code': 500, 'msg': 'error'})
+            status_code=500, text='Internal Server Error', json=Mock(return_value={'code': 500, 'msg': 'error'})
         )
 
         mock_client = Mock()
@@ -478,7 +476,7 @@ class TestHTTPScenarios:
         mock_response = Mock(
             status_code=200,
             text='{"code": 400, "msg": "Bad Request"}',
-            json=Mock(return_value={'code': 400, 'msg': 'Bad Request'})
+            json=Mock(return_value={'code': 400, 'msg': 'Bad Request'}),
         )
 
         mock_client = Mock()
@@ -493,7 +491,7 @@ class TestHTTPScenarios:
         assert mock_app.logger.warning.call_count >= 1
         # Check that one of the calls contains application error info
         all_warnings = [call[0][0] for call in mock_app.logger.warning.call_args_list]
-        assert any('400' in w for w in all_warnings), f"No warning contained error code 400: {all_warnings}"
+        assert any('400' in w for w in all_warnings), f'No warning contained error code 400: {all_warnings}'
 
     @pytest.mark.asyncio
     async def test_send_timeout_logs_warning(self):

tests/unit_tests/utils/test_funcschema.py

@@ -9,6 +9,7 @@ Tests cover:
 Note: Do NOT use 'from __future__ import annotations' because
        funcschema.py expects actual type objects, not string annotations.
 """
+
 import pytest
 from importlib import import_module
 

tests/unit_tests/utils/test_image.py

@@ -20,55 +20,53 @@ class TestGetQQImageDownloadableUrl:
 
     def test_basic_url(self):
         """Parse basic image URL."""
-        url = "http://example.com/image.jpg"
+        url = 'http://example.com/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com/image.jpg"
+        assert result_url == 'http://example.com/image.jpg'
         assert query == {}
 
     def test_url_with_query_params(self):
         """Parse URL with query parameters."""
-        url = "http://example.com/image.jpg?param1=value1&param2=value2"
+        url = 'http://example.com/image.jpg?param1=value1&param2=value2'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com/image.jpg"
-        assert query == {"param1": ["value1"], "param2": ["value2"]}
+        assert result_url == 'http://example.com/image.jpg'
+        assert query == {'param1': ['value1'], 'param2': ['value2']}
 
     def test_url_with_port(self):
         """Parse URL with port number."""
-        url = "http://example.com:8080/image.jpg"
+        url = 'http://example.com:8080/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com:8080/image.jpg"
+        assert result_url == 'http://example.com:8080/image.jpg'
 
     def test_url_with_path(self):
         """Parse URL with complex path."""
-        url = "http://example.com/path/to/image.jpg"
+        url = 'http://example.com/path/to/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "http://example.com/path/to/image.jpg"
+        assert result_url == 'http://example.com/path/to/image.jpg'
 
     def test_url_with_fragment(self):
         """Parse URL with fragment (fragment is not part of query)."""
-        url = "http://example.com/image.jpg#fragment"
+        url = 'http://example.com/image.jpg#fragment'
         result_url, query = get_qq_image_downloadable_url(url)
 
         # Fragment is not included in query string parsing
-        assert "http://example.com/image.jpg" in result_url
+        assert 'http://example.com/image.jpg' in result_url
 
     def test_https_url(self):
         """Parse HTTPS URL and preserve its scheme."""
-        url = "https://example.com/image.jpg"
+        url = 'https://example.com/image.jpg'
         result_url, query = get_qq_image_downloadable_url(url)
 
-        assert result_url == "https://example.com/image.jpg"
+        assert result_url == 'https://example.com/image.jpg'
         assert query == {}
 
     def test_preserves_qq_https_scheme_and_query(self):
         """QQ image URLs keep HTTPS and query parameters."""
-        result_url, query = get_qq_image_downloadable_url(
-            'https://gchat.qpic.cn/gchatpic_new/abc/0?term=2&is_origin=1'
-        )
+        result_url, query = get_qq_image_downloadable_url('https://gchat.qpic.cn/gchatpic_new/abc/0?term=2&is_origin=1')
 
         assert result_url == 'https://gchat.qpic.cn/gchatpic_new/abc/0'
         assert query == {'term': ['2'], 'is_origin': ['1']}
@@ -88,50 +86,50 @@ class TestExtractB64AndFormat:
     async def test_jpeg_data_uri(self):
         """Extract base64 and format from JPEG data URI."""
         # Create a simple base64 string
-        original_data = b"test image data"
+        original_data = b'test image data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/jpeg;base64,{b64_data}"
+        data_uri = f'data:image/jpeg;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "jpeg"
+        assert result_format == 'jpeg'
 
     @pytest.mark.asyncio
     async def test_png_data_uri(self):
         """Extract base64 and format from PNG data URI."""
-        original_data = b"test png data"
+        original_data = b'test png data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/png;base64,{b64_data}"
+        data_uri = f'data:image/png;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "png"
+        assert result_format == 'png'
 
     @pytest.mark.asyncio
     async def test_gif_data_uri(self):
         """Extract base64 and format from GIF data URI."""
-        original_data = b"test gif data"
+        original_data = b'test gif data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/gif;base64,{b64_data}"
+        data_uri = f'data:image/gif;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "gif"
+        assert result_format == 'gif'
 
     @pytest.mark.asyncio
     async def test_webp_data_uri(self):
         """Extract base64 and format from WebP data URI."""
-        original_data = b"test webp data"
+        original_data = b'test webp data'
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/webp;base64,{b64_data}"
+        data_uri = f'data:image/webp;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
         assert result_b64 == b64_data
-        assert result_format == "webp"
+        assert result_format == 'webp'
 
     @pytest.mark.asyncio
     async def test_complex_base64(self):
@@ -139,7 +137,7 @@ class TestExtractB64AndFormat:
         # Base64 can include + and / characters
         original_data = bytes(range(256))  # All byte values
         b64_data = base64.b64encode(original_data).decode()
-        data_uri = f"data:image/png;base64,{b64_data}"
+        data_uri = f'data:image/png;base64,{b64_data}'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
@@ -150,9 +148,9 @@ class TestExtractB64AndFormat:
     @pytest.mark.asyncio
     async def test_empty_base64(self):
         """Handle empty base64 string."""
-        data_uri = "data:image/png;base64,"
+        data_uri = 'data:image/png;base64,'
 
         result_b64, result_format = await extract_b64_and_format(data_uri)
 
-        assert result_b64 == ""
-        assert result_format == "png"
+        assert result_b64 == ''
+        assert result_format == 'png'

tests/unit_tests/utils/test_importutil.py

@@ -23,52 +23,52 @@ class TestImportDir:
 
     def test_calls_importlib_for_each_python_file(self, tmp_path):
         """Should call importlib.import_module for each .py file."""
-        module_dir = tmp_path / "test_modules"
+        module_dir = tmp_path / 'test_modules'
         module_dir.mkdir()
 
-        (module_dir / "__init__.py").write_text("")
-        (module_dir / "module_a.py").write_text("VALUE_A = 'a'\n")
-        (module_dir / "module_b.py").write_text("VALUE_B = 'b'\n")
-        (module_dir / "readme.txt").write_text("not a module")
+        (module_dir / '__init__.py').write_text('')
+        (module_dir / 'module_a.py').write_text("VALUE_A = 'a'\n")
+        (module_dir / 'module_b.py').write_text("VALUE_B = 'b'\n")
+        (module_dir / 'readme.txt').write_text('not a module')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importlib, "import_module") as mock_import:
-            importutil.import_dir(str(module_dir), path_prefix="test_prefix.")
+        with patch.object(importlib, 'import_module') as mock_import:
+            importutil.import_dir(str(module_dir), path_prefix='test_prefix.')
             # Should call import_module for each .py file (excluding __init__.py)
             assert mock_import.call_count == 2
 
     def test_skips_init_py(self, tmp_path):
         """Should skip __init__.py when importing."""
-        module_dir = tmp_path / "test_modules"
+        module_dir = tmp_path / 'test_modules'
         module_dir.mkdir()
 
-        (module_dir / "__init__.py").write_text("")
-        (module_dir / "regular.py").write_text("VALUE = 1\n")
+        (module_dir / '__init__.py').write_text('')
+        (module_dir / 'regular.py').write_text('VALUE = 1\n')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importlib, "import_module") as mock_import:
-            importutil.import_dir(str(module_dir), path_prefix="test_prefix.")
+        with patch.object(importlib, 'import_module') as mock_import:
+            importutil.import_dir(str(module_dir), path_prefix='test_prefix.')
             # __init__.py should be skipped
             mock_import.assert_called_once()
             # The call should not include __init__
             call_args = mock_import.call_args[0][0]
-            assert "__init__" not in call_args
+            assert '__init__' not in call_args
 
     def test_ignores_non_py_files(self, tmp_path):
         """Should ignore non-.py files."""
-        module_dir = tmp_path / "test_modules"
+        module_dir = tmp_path / 'test_modules'
         module_dir.mkdir()
 
-        (module_dir / "module.py").write_text("VALUE = 1\n")
-        (module_dir / "readme.txt").write_text("text")
-        (module_dir / "data.json").write_text("{}")
+        (module_dir / 'module.py').write_text('VALUE = 1\n')
+        (module_dir / 'readme.txt').write_text('text')
+        (module_dir / 'data.json').write_text('{}')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importlib, "import_module") as mock_import:
-            importutil.import_dir(str(module_dir), path_prefix="test_prefix.")
+        with patch.object(importlib, 'import_module') as mock_import:
+            importutil.import_dir(str(module_dir), path_prefix='test_prefix.')
             # Only .py files should be imported
             assert mock_import.call_count == 1
 
@@ -79,14 +79,14 @@ class TestImportModulesInPkg:
     def test_imports_modules_from_package(self, tmp_path):
         """Should import all modules from a package object."""
         mock_pkg = MagicMock()
-        mock_pkg.__file__ = str(tmp_path / "__init__.py")
+        mock_pkg.__file__ = str(tmp_path / '__init__.py')
 
-        (tmp_path / "__init__.py").write_text("")
-        (tmp_path / "mod1.py").write_text("MOD1 = 1\n")
+        (tmp_path / '__init__.py').write_text('')
+        (tmp_path / 'mod1.py').write_text('MOD1 = 1\n')
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importutil, "import_dir") as mock_import_dir:
+        with patch.object(importutil, 'import_dir') as mock_import_dir:
             importutil.import_modules_in_pkg(mock_pkg)
             mock_import_dir.assert_called_once()
             call_path = mock_import_dir.call_args[0][0]
@@ -101,11 +101,11 @@ class TestImportModulesInPkgs:
         from langbot.pkg.utils import importutil
 
         mock_pkg1 = MagicMock()
-        mock_pkg1.__file__ = "/path/to/pkg1/__init__.py"
+        mock_pkg1.__file__ = '/path/to/pkg1/__init__.py'
         mock_pkg2 = MagicMock()
-        mock_pkg2.__file__ = "/path/to/pkg2/__init__.py"
+        mock_pkg2.__file__ = '/path/to/pkg2/__init__.py'
 
-        with patch.object(importutil, "import_modules_in_pkg") as mock_import:
+        with patch.object(importutil, 'import_modules_in_pkg') as mock_import:
             importutil.import_modules_in_pkgs([mock_pkg1, mock_pkg2])
             assert mock_import.call_count == 2
 
@@ -116,18 +116,18 @@ class TestImportDotStyleDir:
     def test_converts_dot_notation_to_path(self, tmp_path):
         """Should convert dot notation to path and import."""
         # Create structure matching the dot notation
-        (tmp_path / "my").mkdir()
-        (tmp_path / "my" / "pkg").mkdir()
-        (tmp_path / "my" / "pkg" / "test").mkdir()
+        (tmp_path / 'my').mkdir()
+        (tmp_path / 'my' / 'pkg').mkdir()
+        (tmp_path / 'my' / 'pkg' / 'test').mkdir()
 
         from langbot.pkg.utils import importutil
 
-        with patch.object(importutil, "import_dir") as mock_import_dir:
-            importutil.import_dot_style_dir("my.pkg.test")
+        with patch.object(importutil, 'import_dir') as mock_import_dir:
+            importutil.import_dot_style_dir('my.pkg.test')
             # The path should be converted using os.path.join
             call_path = mock_import_dir.call_args[0][0]
             # Should contain the path components joined
-            assert "my" in call_path
+            assert 'my' in call_path
 
 
 class TestReadResourceFile:
@@ -137,16 +137,16 @@ class TestReadResourceFile:
         """Should read content from a resource file."""
         from langbot.pkg.utils import importutil
 
-        content = importutil.read_resource_file("templates/config.yaml")
-        assert "admins:" in content
-        assert "edition: community" in content
+        content = importutil.read_resource_file('templates/config.yaml')
+        assert 'admins:' in content
+        assert 'edition: community' in content
 
     def test_raises_for_nonexistent_file(self):
         """Should raise exception for non-existent resource file."""
         from langbot.pkg.utils import importutil
 
         with pytest.raises((FileNotFoundError, Exception)):
-            importutil.read_resource_file("nonexistent/path/file.txt")
+            importutil.read_resource_file('nonexistent/path/file.txt')
 
 
 class TestReadResourceFileBytes:
@@ -156,16 +156,16 @@ class TestReadResourceFileBytes:
         """Should read content as bytes from a resource file."""
         from langbot.pkg.utils import importutil
 
-        content = importutil.read_resource_file_bytes("templates/config.yaml")
-        assert b"admins:" in content
-        assert b"edition: community" in content
+        content = importutil.read_resource_file_bytes('templates/config.yaml')
+        assert b'admins:' in content
+        assert b'edition: community' in content
 
     def test_raises_for_nonexistent_file_bytes(self):
         """Should raise exception for non-existent resource file."""
         from langbot.pkg.utils import importutil
 
         with pytest.raises((FileNotFoundError, Exception)):
-            importutil.read_resource_file_bytes("nonexistent/path/file.txt")
+            importutil.read_resource_file_bytes('nonexistent/path/file.txt')
 
 
 class TestListResourceFiles:
@@ -175,9 +175,9 @@ class TestListResourceFiles:
         """Should list files in a resource directory."""
         from langbot.pkg.utils import importutil
 
-        files = importutil.list_resource_files("templates")
-        assert "config.yaml" in files
-        assert "default-pipeline-config.json" in files
+        files = importutil.list_resource_files('templates')
+        assert 'config.yaml' in files
+        assert 'default-pipeline-config.json' in files
         assert all(isinstance(file, str) for file in files)
 
     def test_raises_for_nonexistent_directory(self):
@@ -185,8 +185,8 @@ class TestListResourceFiles:
         from langbot.pkg.utils import importutil
 
         with pytest.raises((FileNotFoundError, Exception)):
-            importutil.list_resource_files("nonexistent_directory_xyz")
+            importutil.list_resource_files('nonexistent_directory_xyz')
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])

tests/unit_tests/utils/test_platform.py

@@ -5,6 +5,7 @@ Tests cover:
 - Docker environment detection
 - WebSocket plugin runtime mode
 """
+
 from __future__ import annotations
 
 import os
@@ -86,4 +87,4 @@ class TestGetPlatform:
         assert platform_module.use_websocket_to_connect_plugin_runtime() is True
 
         # Restore
-        platform_module.standalone_runtime = original
+        platform_module.standalone_runtime = original

tests/unit_tests/utils/test_proxy.py

@@ -60,10 +60,12 @@ class TestProxyManager:
 
     async def test_initialize_config_overrides_env(self):
         """Config proxy overrides environment variables."""
-        mock_app = self._create_mock_app(proxy_config={
-            'http': 'http://config-proxy:8080',
-            'https': 'https://config-proxy:8443',
-        })
+        mock_app = self._create_mock_app(
+            proxy_config={
+                'http': 'http://config-proxy:8080',
+                'https': 'https://config-proxy:8443',
+            }
+        )
 
         with patch.dict(os.environ, {'HTTP_PROXY': 'http://env-proxy:8080'}):
             pm = ProxyManager(mock_app)
@@ -74,10 +76,12 @@ class TestProxyManager:
 
     async def test_initialize_sets_env_variables(self):
         """initialize sets proxy to environment variables."""
-        mock_app = self._create_mock_app(proxy_config={
-            'http': 'http://test-proxy:8080',
-            'https': 'https://test-proxy:8443',
-        })
+        mock_app = self._create_mock_app(
+            proxy_config={
+                'http': 'http://test-proxy:8080',
+                'https': 'https://test-proxy:8443',
+            }
+        )
 
         pm = ProxyManager(mock_app)
         await pm.initialize()
@@ -143,9 +147,11 @@ class TestProxyManager:
 
     async def test_initialize_http_only_config(self):
         """initialize handles http-only config."""
-        mock_app = self._create_mock_app(proxy_config={
-            'http': 'http://http-only:8080',
-        })
+        mock_app = self._create_mock_app(
+            proxy_config={
+                'http': 'http://http-only:8080',
+            }
+        )
 
         # Clear any existing proxy env vars
         env_backup = {}

tests/unit_tests/utils/test_runner.py

@@ -29,63 +29,63 @@ class TestGetRunnerCategory:
 
     def test_empty_url_returns_unknown(self):
         """Empty or None URL should return UNKNOWN."""
-        assert get_runner_category("test", "") == RunnerCategory.UNKNOWN
-        assert get_runner_category("test", None) == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', '') == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', None) == RunnerCategory.UNKNOWN
 
     def test_localhost_returns_local(self):
         """localhost URL should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://localhost:3000") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "https://localhost") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://localhost:3000') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'https://localhost') == RunnerCategory.LOCAL
 
     def test_127_0_0_1_returns_local(self):
         """127.0.0.1 URL should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://127.0.0.1:8080") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "https://127.0.0.1") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://127.0.0.1:8080') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'https://127.0.0.1') == RunnerCategory.LOCAL
 
     def test_0_0_0_0_returns_local(self):
         """0.0.0.0 URL should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://0.0.0.0:8080") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://0.0.0.0:8080') == RunnerCategory.LOCAL
 
     def test_private_ip_192_168_returns_local(self):
         """192.168.x.x private IP should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://192.168.1.1:3000") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://192.168.0.100") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://192.168.1.1:3000') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://192.168.0.100') == RunnerCategory.LOCAL
 
     def test_private_ip_10_returns_local(self):
         """10.x.x.x private IP should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://10.0.0.1:8080") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://10.255.255.255") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://10.0.0.1:8080') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://10.255.255.255') == RunnerCategory.LOCAL
 
     def test_private_ip_172_16_31_returns_local(self):
         """172.16.x.x - 172.31.x.x private IP range should be categorized as LOCAL."""
-        assert get_runner_category("test", "http://172.16.0.1:8080") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://172.20.0.1") == RunnerCategory.LOCAL
-        assert get_runner_category("test", "http://172.31.255.255") == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://172.16.0.1:8080') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://172.20.0.1') == RunnerCategory.LOCAL
+        assert get_runner_category('test', 'http://172.31.255.255') == RunnerCategory.LOCAL
 
     def test_n8n_cloud_returns_cloud(self):
         """n8n.cloud domain should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://myinstance.n8n.cloud") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://test.n8n.io") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://myinstance.n8n.cloud') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://test.n8n.io') == RunnerCategory.CLOUD
 
     def test_dify_cloud_returns_cloud(self):
         """Dify cloud domains should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://api.dify.ai/v1") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://cloud.dify.ai") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://api.dify.ai/v1') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://cloud.dify.ai') == RunnerCategory.CLOUD
 
     def test_coze_cloud_returns_cloud(self):
         """Coze domains should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://api.coze.com") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://api.coze.cn") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://api.coze.com') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://api.coze.cn') == RunnerCategory.CLOUD
 
     def test_langflow_cloud_returns_cloud(self):
         """Langflow domains should be categorized as CLOUD."""
-        assert get_runner_category("test", "https://cloud.langflow.ai") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://test.langflow.org") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://cloud.langflow.ai') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://test.langflow.org') == RunnerCategory.CLOUD
 
     def test_other_url_returns_cloud(self):
         """Other URLs should default to CLOUD category."""
-        assert get_runner_category("test", "https://example.com") == RunnerCategory.CLOUD
-        assert get_runner_category("test", "https://myserver.example.org") == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://example.com') == RunnerCategory.CLOUD
+        assert get_runner_category('test', 'https://myserver.example.org') == RunnerCategory.CLOUD
 
     @pytest.mark.parametrize(
         'runner_url',
@@ -101,7 +101,7 @@ class TestGetRunnerCategory:
     )
     def test_invalid_urls_return_unknown(self, runner_url):
         """Invalid or incomplete URLs should return UNKNOWN."""
-        assert get_runner_category("test", runner_url) == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', runner_url) == RunnerCategory.UNKNOWN
 
     def test_urlparse_exception_returns_unknown(self):
         """Exception during URL parsing should return UNKNOWN."""
@@ -109,15 +109,15 @@ class TestGetRunnerCategory:
         from langbot.pkg.utils import runner
 
         def mock_urlparse(url):
-            raise Exception("URL parsing failed")
+            raise Exception('URL parsing failed')
 
-        with patch("langbot.pkg.utils.runner.urlparse", side_effect=mock_urlparse):
-            result = runner.get_runner_category("test", "http://example.com")
+        with patch('langbot.pkg.utils.runner.urlparse', side_effect=mock_urlparse):
+            result = runner.get_runner_category('test', 'http://example.com')
             assert result == RunnerCategory.UNKNOWN
 
     def test_url_without_scheme_returns_unknown(self):
         """URL without scheme should return UNKNOWN."""
-        assert get_runner_category("test", "example.com") == RunnerCategory.UNKNOWN
+        assert get_runner_category('test', 'example.com') == RunnerCategory.UNKNOWN
 
     @pytest.mark.parametrize(
         'runner_url',
@@ -146,20 +146,21 @@ class TestGetRunnerCategory:
         """Domain names that only look like private IP prefixes should not be LOCAL."""
         assert get_runner_category('langflow-api', runner_url) == RunnerCategory.CLOUD
 
+
 class TestIsCloudRunner:
     """Test is_cloud_runner helper function."""
 
     def test_cloud_runner_returns_true(self):
         """Cloud URL should return True."""
-        assert is_cloud_runner("test", "https://api.dify.ai") is True
+        assert is_cloud_runner('test', 'https://api.dify.ai') is True
 
     def test_local_runner_returns_false(self):
         """Local URL should return False."""
-        assert is_cloud_runner("test", "http://localhost:3000") is False
+        assert is_cloud_runner('test', 'http://localhost:3000') is False
 
     def test_unknown_returns_false(self):
         """Unknown category should return False."""
-        assert is_cloud_runner("test", None) is False
+        assert is_cloud_runner('test', None) is False
 
 
 class TestIsLocalRunner:
@@ -167,15 +168,15 @@ class TestIsLocalRunner:
 
     def test_local_runner_returns_true(self):
         """Local URL should return True."""
-        assert is_local_runner("test", "http://localhost:3000") is True
+        assert is_local_runner('test', 'http://localhost:3000') is True
 
     def test_cloud_runner_returns_false(self):
         """Cloud URL should return False."""
-        assert is_local_runner("test", "https://api.dify.ai") is False
+        assert is_local_runner('test', 'https://api.dify.ai') is False
 
     def test_unknown_returns_false(self):
         """Unknown category should return False."""
-        assert is_local_runner("test", None) is False
+        assert is_local_runner('test', None) is False
 
 
 class TestGetRunnerInfo:
@@ -183,17 +184,17 @@ class TestGetRunnerInfo:
 
     def test_returns_dict_with_expected_keys(self):
         """Should return dict with name, url, and category keys."""
-        info = get_runner_info("my-runner", "http://localhost:3000")
-        assert "name" in info
-        assert "url" in info
-        assert "category" in info
+        info = get_runner_info('my-runner', 'http://localhost:3000')
+        assert 'name' in info
+        assert 'url' in info
+        assert 'category' in info
 
     def test_includes_correct_values(self):
         """Should include correct values in dict."""
-        info = get_runner_info("my-runner", "http://localhost:3000")
-        assert info["name"] == "my-runner"
-        assert info["url"] == "http://localhost:3000"
-        assert info["category"] == RunnerCategory.LOCAL
+        info = get_runner_info('my-runner', 'http://localhost:3000')
+        assert info['name'] == 'my-runner'
+        assert info['url'] == 'http://localhost:3000'
+        assert info['category'] == RunnerCategory.LOCAL
 
 
 class TestExtractRunnerUrl:
@@ -203,74 +204,58 @@ class TestExtractRunnerUrl:
         """Should extract base-url from dify-service-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "dify-service-api": {"base-url": "https://api.dify.ai"}
-            }
-        }
-        url = extract_runner_url("dify-service-api", runner, pipeline_config)
-        assert url == "https://api.dify.ai"
+        pipeline_config = {'ai': {'dify-service-api': {'base-url': 'https://api.dify.ai'}}}
+        url = extract_runner_url('dify-service-api', runner, pipeline_config)
+        assert url == 'https://api.dify.ai'
 
     def test_n8n_service_api_extracts_url(self):
         """Should extract webhook-url from n8n-service-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "n8n-service-api": {"webhook-url": "https://my.n8n.cloud/webhook"}
-            }
-        }
-        url = extract_runner_url("n8n-service-api", runner, pipeline_config)
-        assert url == "https://my.n8n.cloud/webhook"
+        pipeline_config = {'ai': {'n8n-service-api': {'webhook-url': 'https://my.n8n.cloud/webhook'}}}
+        url = extract_runner_url('n8n-service-api', runner, pipeline_config)
+        assert url == 'https://my.n8n.cloud/webhook'
 
     def test_coze_api_extracts_url(self):
         """Should extract api-base from coze-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "coze-api": {"api-base": "https://api.coze.com"}
-            }
-        }
-        url = extract_runner_url("coze-api", runner, pipeline_config)
-        assert url == "https://api.coze.com"
+        pipeline_config = {'ai': {'coze-api': {'api-base': 'https://api.coze.com'}}}
+        url = extract_runner_url('coze-api', runner, pipeline_config)
+        assert url == 'https://api.coze.com'
 
     def test_langflow_api_extracts_url(self):
         """Should extract base-url from langflow-api config."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "langflow-api": {"base-url": "https://cloud.langflow.ai"}
-            }
-        }
-        url = extract_runner_url("langflow-api", runner, pipeline_config)
-        assert url == "https://cloud.langflow.ai"
+        pipeline_config = {'ai': {'langflow-api': {'base-url': 'https://cloud.langflow.ai'}}}
+        url = extract_runner_url('langflow-api', runner, pipeline_config)
+        assert url == 'https://cloud.langflow.ai'
 
     def test_unknown_runner_returns_none(self):
         """Unknown runner name should return None."""
         runner = Mock()
         runner.pipeline_config = {}
         pipeline_config = {}
-        url = extract_runner_url("unknown-runner", runner, pipeline_config)
+        url = extract_runner_url('unknown-runner', runner, pipeline_config)
         assert url is None
 
     def test_none_runner_returns_none(self):
         """None runner should return None."""
-        url = extract_runner_url("test", None, {})
+        url = extract_runner_url('test', None, {})
         assert url is None
 
     def test_runner_without_pipeline_config_returns_none(self):
         """Runner without pipeline_config attribute should return None."""
         runner = Mock(spec=[])  # Empty spec means no attributes
-        url = extract_runner_url("test", runner, {})
+        url = extract_runner_url('test', runner, {})
         assert url is None
 
     def test_none_pipeline_config_returns_none(self):
         """None pipeline_config should return None."""
         runner = Mock()
         runner.pipeline_config = {}
-        url = extract_runner_url("dify-service-api", runner, None)
+        url = extract_runner_url('dify-service-api', runner, None)
         assert url is None
 
     def test_missing_ai_config_returns_none(self):
@@ -278,7 +263,7 @@ class TestExtractRunnerUrl:
         runner = Mock()
         runner.pipeline_config = {}
         pipeline_config = {}
-        url = extract_runner_url("dify-service-api", runner, pipeline_config)
+        url = extract_runner_url('dify-service-api', runner, pipeline_config)
         assert url is None
 
 
@@ -289,19 +274,15 @@ class TestGetRunnerCategoryFromRunner:
         """Should extract URL and return correct category."""
         runner = Mock()
         runner.pipeline_config = {}
-        pipeline_config = {
-            "ai": {
-                "dify-service-api": {"base-url": "https://api.dify.ai"}
-            }
-        }
-        category = get_runner_category_from_runner("dify-service-api", runner, pipeline_config)
+        pipeline_config = {'ai': {'dify-service-api': {'base-url': 'https://api.dify.ai'}}}
+        category = get_runner_category_from_runner('dify-service-api', runner, pipeline_config)
         assert category == RunnerCategory.CLOUD
 
     def test_returns_unknown_for_missing_url(self):
         """Should return UNKNOWN when URL cannot be extracted."""
         runner = Mock()
         runner.pipeline_config = {}
-        category = get_runner_category_from_runner("unknown", runner, {})
+        category = get_runner_category_from_runner('unknown', runner, {})
         assert category == RunnerCategory.UNKNOWN
 
 
@@ -310,9 +291,9 @@ class TestConstants:
 
     def test_runner_category_constants(self):
         """RunnerCategory should have LOCAL, CLOUD, UNKNOWN."""
-        assert RunnerCategory.LOCAL == "local"
-        assert RunnerCategory.CLOUD == "cloud"
-        assert RunnerCategory.UNKNOWN == "unknown"
+        assert RunnerCategory.LOCAL == 'local'
+        assert RunnerCategory.CLOUD == 'cloud'
+        assert RunnerCategory.UNKNOWN == 'unknown'
 
     def test_cloud_domains_not_empty(self):
         """CLOUD_DOMAINS should not be empty."""
@@ -323,5 +304,5 @@ class TestConstants:
         assert len(LOCAL_PATTERNS) > 0
 
 
-if __name__ == "__main__":
-    pytest.main([__file__, "-v"])
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])

tests/unit_tests/vector/test_filter_utils.py

@@ -68,11 +68,7 @@ class TestNormalizeFilter:
 
     def test_normalize_filter_multiple_conditions(self):
         """Multiple top-level keys are AND-ed (returned as multiple triples)."""
-        result = normalize_filter({
-            'file_id': 'abc',
-            'status': {'$ne': 'deleted'},
-            'created_at': {'$gte': 1700000000}
-        })
+        result = normalize_filter({'file_id': 'abc', 'status': {'$ne': 'deleted'}, 'created_at': {'$gte': 1700000000}})
 
         assert len(result) == 3
         # Order should match dict iteration order
@@ -149,11 +145,7 @@ class TestStripUnsupportedFields:
             ('file_id', '$eq', 'def'),
         ]
 
-        result = strip_unsupported_fields(
-            triples,
-            {'file_id', 'chunk_uuid'},
-            field_aliases={'uuid': 'chunk_uuid'}
-        )
+        result = strip_unsupported_fields(triples, {'file_id', 'chunk_uuid'}, field_aliases={'uuid': 'chunk_uuid'})
 
         assert len(result) == 2
         # 'uuid' should be resolved to 'chunk_uuid'
@@ -169,7 +161,7 @@ class TestStripUnsupportedFields:
         result = strip_unsupported_fields(
             triples,
             {'file_id'},  # chunk_uuid not supported
-            field_aliases={'uuid': 'chunk_uuid'}
+            field_aliases={'uuid': 'chunk_uuid'},
         )
 
         assert result == []
@@ -207,4 +199,5 @@ class TestSupportedOpsConstant:
     def test_supported_ops_is_frozenset(self):
         """SUPPORTED_OPS is a frozenset for immutability."""
         from collections.abc import Set
-        assert isinstance(SUPPORTED_OPS, Set)
+
+        assert isinstance(SUPPORTED_OPS, Set)

tests/unit_tests/vector/test_mgr.py

@@ -55,6 +55,7 @@ class TestVectorDBManagerInitialization:
 
             # Run initialize synchronously for test
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             # Chroma should be instantiated
@@ -76,6 +77,7 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_chroma_class.assert_called_once_with(mock_app)
@@ -96,6 +98,7 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_qdrant_class.assert_called_once_with(mock_app)
@@ -115,6 +118,7 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_seekdb_class.assert_called_once_with(mock_app)
@@ -123,11 +127,7 @@ class TestVectorDBManagerInitialization:
         """Milvus config with custom URI."""
         vdb_config = {
             'use': 'milvus',
-            'milvus': {
-                'uri': 'http://localhost:19530',
-                'token': 'root:Milvus',
-                'db_name': 'langbot_db'
-            }
+            'milvus': {'uri': 'http://localhost:19530', 'token': 'root:Milvus', 'db_name': 'langbot_db'},
         }
         mock_app = self._create_mock_app(vdb_config)
 
@@ -141,13 +141,11 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_milvus_class.assert_called_once_with(
-                mock_app,
-                uri='http://localhost:19530',
-                token='root:Milvus',
-                db_name='langbot_db'
+                mock_app, uri='http://localhost:19530', token='root:Milvus', db_name='langbot_db'
             )
 
     def test_initialize_milvus_backend_defaults(self):
@@ -165,24 +163,15 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             # Should use default values
-            mock_milvus_class.assert_called_once_with(
-                mock_app,
-                uri='./data/milvus.db',
-                token=None,
-                db_name='default'
-            )
+            mock_milvus_class.assert_called_once_with(mock_app, uri='./data/milvus.db', token=None, db_name='default')
 
     def test_initialize_pgvector_with_connection_string(self):
         """pgvector with connection string."""
-        vdb_config = {
-            'use': 'pgvector',
-            'pgvector': {
-                'connection_string': 'postgresql://user:pass@host:5432/langbot'
-            }
-        }
+        vdb_config = {'use': 'pgvector', 'pgvector': {'connection_string': 'postgresql://user:pass@host:5432/langbot'}}
         mock_app = self._create_mock_app(vdb_config)
 
         mocks = self._make_vector_import_mocks()
@@ -195,11 +184,11 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_pgvector_class.assert_called_once_with(
-                mock_app,
-                connection_string='postgresql://user:pass@host:5432/langbot'
+                mock_app, connection_string='postgresql://user:pass@host:5432/langbot'
             )
 
     def test_initialize_pgvector_with_individual_params(self):
@@ -211,8 +200,8 @@ class TestVectorDBManagerInitialization:
                 'port': 5433,
                 'database': 'vectordb',
                 'user': 'admin',
-                'password': 'secret'
-            }
+                'password': 'secret',
+            },
         }
         mock_app = self._create_mock_app(vdb_config)
 
@@ -226,15 +215,11 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_pgvector_class.assert_called_once_with(
-                mock_app,
-                host='db.example.com',
-                port=5433,
-                database='vectordb',
-                user='admin',
-                password='secret'
+                mock_app, host='db.example.com', port=5433, database='vectordb', user='admin', password='secret'
             )
 
     def test_initialize_pgvector_defaults(self):
@@ -252,15 +237,11 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_pgvector_class.assert_called_once_with(
-                mock_app,
-                host='localhost',
-                port=5432,
-                database='langbot',
-                user='postgres',
-                password='postgres'
+                mock_app, host='localhost', port=5432, database='langbot', user='postgres', password='postgres'
             )
 
     def test_initialize_unknown_backend_defaults_to_chroma(self):
@@ -278,6 +259,7 @@ class TestVectorDBManagerInitialization:
             mgr = VectorDBManager(mock_app)
 
             import asyncio
+
             asyncio.get_event_loop().run_until_complete(mgr.initialize())
 
             mock_chroma_class.assert_called_once_with(mock_app)
@@ -335,4 +317,4 @@ class TestVectorDBManagerProxies:
             mgr.vector_db = mock_vector_db
 
             result = mgr.get_supported_search_types()
-            assert result == ['vector', 'full_text']
+            assert result == ['vector', 'full_text']

tests/unit_tests/vector/test_vdb_base.py

@@ -39,6 +39,7 @@ class TestVectorDatabaseAbstractMethods:
 
     def test_abstract_methods_required(self):
         """Subclass must implement all abstract methods."""
+
         class IncompleteVectorDB(VectorDatabase):
             pass
 
@@ -47,11 +48,21 @@ class TestVectorDatabaseAbstractMethods:
 
     def test_supported_search_types_default(self):
         """Default supported_search_types returns [VECTOR]."""
+
         class MinimalVectorDB(VectorDatabase):
             async def add_embeddings(self, collection, ids, embeddings_list, metadatas, documents=None):
                 pass
 
-            async def search(self, collection, query_embedding, k=5, search_type='vector', query_text='', filter=None, vector_weight=None):
+            async def search(
+                self,
+                collection,
+                query_embedding,
+                k=5,
+                search_type='vector',
+                query_text='',
+                filter=None,
+                vector_weight=None,
+            ):
                 pass
 
             async def delete_by_file_id(self, collection, file_id):
@@ -71,11 +82,21 @@ class TestVectorDatabaseAbstractMethods:
 
     def test_list_by_filter_default_implementation(self):
         """list_by_filter has default implementation returning empty."""
+
         class MinimalVectorDB(VectorDatabase):
             async def add_embeddings(self, collection, ids, embeddings_list, metadatas, documents=None):
                 pass
 
-            async def search(self, collection, query_embedding, k=5, search_type='vector', query_text='', filter=None, vector_weight=None):
+            async def search(
+                self,
+                collection,
+                query_embedding,
+                k=5,
+                search_type='vector',
+                query_text='',
+                filter=None,
+                vector_weight=None,
+            ):
                 pass
 
             async def delete_by_file_id(self, collection, file_id):
@@ -93,9 +114,8 @@ class TestVectorDatabaseAbstractMethods:
         db = MinimalVectorDB()
         # list_by_filter should return empty list and -1 for total
         import asyncio
-        result = asyncio.get_event_loop().run_until_complete(
-            db.list_by_filter('test_collection')
-        )
+
+        result = asyncio.get_event_loop().run_until_complete(db.list_by_filter('test_collection'))
         assert result == ([], -1)
 
 
@@ -105,14 +125,17 @@ class TestVectorDatabaseInterface:
     @pytest.fixture
     def mock_vector_db(self):
         """Create a minimal mock VectorDatabase for testing."""
+
         class MockVectorDB(VectorDatabase):
             def __init__(self):
                 self.add_embeddings = AsyncMock()
-                self.search = AsyncMock(return_value={
-                    'ids': [['id1', 'id2']],
-                    'distances': [[0.1, 0.2]],
-                    'metadatas': [[{'key': 'val1'}, {'key': 'val2'}]]
-                })
+                self.search = AsyncMock(
+                    return_value={
+                        'ids': [['id1', 'id2']],
+                        'distances': [[0.1, 0.2]],
+                        'metadatas': [[{'key': 'val1'}, {'key': 'val2'}]],
+                    }
+                )
                 self.delete_by_file_id = AsyncMock()
                 self.delete_by_filter = AsyncMock(return_value=5)
                 self.get_or_create_collection = AsyncMock()
@@ -121,7 +144,16 @@ class TestVectorDatabaseInterface:
             async def add_embeddings(self, collection, ids, embeddings_list, metadatas, documents=None):
                 pass
 
-            async def search(self, collection, query_embedding, k=5, search_type='vector', query_text='', filter=None, vector_weight=None):
+            async def search(
+                self,
+                collection,
+                query_embedding,
+                k=5,
+                search_type='vector',
+                query_text='',
+                filter=None,
+                vector_weight=None,
+            ):
                 pass
 
             async def delete_by_file_id(self, collection, file_id):
@@ -146,7 +178,7 @@ class TestVectorDatabaseInterface:
             ids=['id1', 'id2'],
             embeddings_list=[[0.1, 0.2], [0.3, 0.4]],
             metadatas=[{'a': 1}, {'b': 2}],
-            documents=['doc1', 'doc2']
+            documents=['doc1', 'doc2'],
         )
         mock_vector_db.add_embeddings.assert_called_once()
 
@@ -162,7 +194,7 @@ class TestVectorDatabaseInterface:
             search_type='hybrid',
             query_text='search text',
             filter={'file_id': 'abc'},
-            vector_weight=0.7
+            vector_weight=0.7,
         )
         mock_vector_db.search.assert_called_once()
 
@@ -170,4 +202,4 @@ class TestVectorDatabaseInterface:
     async def test_delete_by_filter_returns_int(self, mock_vector_db):
         """delete_by_filter returns int count."""
         result = await mock_vector_db.delete_by_filter('test', {'file_id': 'abc'})
-        assert isinstance(result, int)
+        assert isinstance(result, int)

tests/unit_tests/vector/test_vdb_filter_conversion.py

@@ -5,6 +5,7 @@ Tests cover:
 - _build_milvus_expr: Milvus boolean expression string conversion
 - _build_pg_conditions: PostgreSQL SQLAlchemy conditions conversion
 """
+
 from __future__ import annotations
 
 from importlib import import_module
@@ -122,11 +123,13 @@ class TestQdrantFilterConversion:
         """Multiple conditions are combined in must/must_not."""
         qdrant_module = get_qdrant_module()
 
-        result = qdrant_module._build_qdrant_filter({
-            'file_id': 'abc',
-            'status': {'$ne': 'deleted'},
-            'created_at': {'$gte': 100},
-        })
+        result = qdrant_module._build_qdrant_filter(
+            {
+                'file_id': 'abc',
+                'status': {'$ne': 'deleted'},
+                'created_at': {'$gte': 100},
+            }
+        )
 
         assert len(result.must) == 2  # file_id eq + created_at gte
         assert len(result.must_not) == 1  # status ne
@@ -198,10 +201,12 @@ class TestMilvusFilterConversion:
         """Multiple conditions are joined with 'and'."""
         milvus_module = get_milvus_module()
 
-        result = milvus_module._build_milvus_expr({
-            'file_id': 'abc',
-            'chunk_uuid': {'$ne': 'def'},
-        })
+        result = milvus_module._build_milvus_expr(
+            {
+                'file_id': 'abc',
+                'chunk_uuid': {'$ne': 'def'},
+            }
+        )
         assert 'and' in result
         assert 'file_id == "abc"' in result
         assert 'chunk_uuid != "def"' in result
@@ -272,6 +277,7 @@ class TestPgVectorFilterConversion:
         assert len(result) == 1
         # Verify it's a SQLAlchemy BinaryExpression
         from sqlalchemy.sql.expression import BinaryExpression
+
         assert isinstance(result[0], BinaryExpression)
 
     def test_ne_operator_creates_inequality_condition(self):
@@ -321,10 +327,12 @@ class TestPgVectorFilterConversion:
         """Multiple conditions return list of conditions."""
         pgvector_module = get_pgvector_module()
 
-        result = pgvector_module._build_pg_conditions({
-            'file_id': 'abc',
-            'chunk_uuid': {'$ne': 'def'},
-        })
+        result = pgvector_module._build_pg_conditions(
+            {
+                'file_id': 'abc',
+                'chunk_uuid': {'$ne': 'def'},
+            }
+        )
 
         assert len(result) == 2
 
@@ -349,11 +357,13 @@ class TestPgVectorFilterConversion:
         """Only supported fields (text, file_id, chunk_uuid) are kept."""
         pgvector_module = get_pgvector_module()
 
-        result = pgvector_module._build_pg_conditions({
-            'text': {'$ne': ''},
-            'file_id': 'abc',
-            'chunk_uuid': {'$in': ['x', 'y']},
-            'unsupported': 'value',
-        })
+        result = pgvector_module._build_pg_conditions(
+            {
+                'text': {'$ne': ''},
+                'file_id': 'abc',
+                'chunk_uuid': {'$in': ['x', 'y']},
+                'unsupported': 'value',
+            }
+        )
 
-        assert len(result) == 3  # Only supported fields
+        assert len(result) == 3  # Only supported fields