fix: fix the lint check errors of the main branch (#403)

tests/integration/test_nodes.py

@@ -1,9 +1,7 @@
 from collections import namedtuple
 import json
 import pytest
-import asyncio
-import types
-from unittest.mock import patch, MagicMock, AsyncMock
+from unittest.mock import patch, MagicMock
 from src.graph.nodes import planner_node
 from src.graph.nodes import human_feedback_node
 from src.graph.nodes import coordinator_node
@@ -39,7 +37,7 @@ def mock_state():
 @pytest.fixture
 def mock_configurable():
     mock = MagicMock()
-    mock.max_search_results = 5
+    mock.max_search_results = 7
     return mock
 
 
@@ -668,8 +666,6 @@ def test_coordinator_node_tool_calls_exception_handling(
     patch_handoff_to_planner,
     patch_logger,
 ):
-    # tool_calls raises exception in processing
-    tool_calls = [{"name": "handoff_to_planner", "args": None}]
     with (
         patch("src.graph.nodes.AGENT_LLM_MAP", {"coordinator": "basic"}),
         patch("src.graph.nodes.get_llm_by_type") as mock_get_llm,
@@ -1037,24 +1033,6 @@ async def test_execute_agent_step_recursion_limit_env_negative(
         )
 
 
-@pytest.fixture
-def mock_state_with_steps(mock_step, mock_completed_step):
-    # Simulate a plan with one completed and one unexecuted step
-    Plan = MagicMock()
-    Plan.steps = [mock_completed_step, mock_step]
-    return {
-        "current_plan": Plan,
-        "observations": ["obs1"],
-        "locale": "en-US",
-        "resources": [],
-    }
-
-
-@pytest.fixture
-def mock_config():
-    return MagicMock()
-
-
 @pytest.fixture
 def mock_configurable_with_mcp():
     mock = MagicMock()
@@ -1297,27 +1275,6 @@ def mock_state_without_resources():
     return {"other": "value"}
 
 
-@pytest.fixture
-def mock_config():
-    return MagicMock()
-
-
-@pytest.fixture
-def mock_configurable():
-    mock = MagicMock()
-    mock.max_search_results = 7
-    return mock
-
-
-@pytest.fixture
-def patch_config_from_runnable_config(mock_configurable):
-    with patch(
-        "src.graph.nodes.Configuration.from_runnable_config",
-        return_value=mock_configurable,
-    ):
-        yield
-
-
 @pytest.fixture
 def patch_get_web_search_tool():
     with patch("src.graph.nodes.get_web_search_tool") as mock: