fix test

tests/test_crew_thread_safety.py

@@ -1,7 +1,8 @@
 import asyncio
 import threading
+from collections.abc import Callable
 from concurrent.futures import ThreadPoolExecutor
-from typing import Dict, Any, Callable
+from typing import Any
 from unittest.mock import patch
 
 import pytest
@@ -24,9 +25,12 @@ def simple_agent_factory():
 
 @pytest.fixture
 def simple_task_factory():
-    def create_task(name: str, callback: Callable = None) -> Task:
+    def create_task(name: str, agent: Agent, callback: Callable | None = None) -> Task:
         return Task(
-            description=f"Task for {name}", expected_output="Done", callback=callback
+            description=f"Task for {name}",
+            expected_output="Done",
+            agent=agent,
+            callback=callback,
         )
 
     return create_task
@@ -34,10 +38,9 @@ def simple_task_factory():
 
 @pytest.fixture
 def crew_factory(simple_agent_factory, simple_task_factory):
-    def create_crew(name: str, task_callback: Callable = None) -> Crew:
+    def create_crew(name: str, task_callback: Callable | None = None) -> Crew:
         agent = simple_agent_factory(name)
-        task = simple_task_factory(name, callback=task_callback)
-        task.agent = agent
+        task = simple_task_factory(name, agent=agent, callback=task_callback)
 
         return Crew(agents=[agent], tasks=[task], verbose=False)
 
@@ -50,7 +53,7 @@ class TestCrewThreadSafety:
         mock_execute_task.return_value = "Task completed"
         num_crews = 5
 
-        def run_crew_with_context_check(crew_id: str) -> Dict[str, Any]:
+        def run_crew_with_context_check(crew_id: str) -> dict[str, Any]:
             results = {"crew_id": crew_id, "contexts": []}
 
             def check_context_task(output):
@@ -105,28 +108,28 @@ class TestCrewThreadSafety:
             before_ctx = next(
                 ctx for ctx in result["contexts"] if ctx["stage"] == "before_kickoff"
             )
-            assert (
-                before_ctx["crew_id"] is None
-            ), f"Context should be None before kickoff for {result['crew_id']}"
+            assert before_ctx["crew_id"] is None, (
+                f"Context should be None before kickoff for {result['crew_id']}"
+            )
 
             task_ctx = next(
                 ctx for ctx in result["contexts"] if ctx["stage"] == "task_callback"
             )
-            assert (
-                task_ctx["crew_id"] == crew_uuid
-            ), f"Context mismatch during task for {result['crew_id']}"
+            assert task_ctx["crew_id"] == crew_uuid, (
+                f"Context mismatch during task for {result['crew_id']}"
+            )
 
             after_ctx = next(
                 ctx for ctx in result["contexts"] if ctx["stage"] == "after_kickoff"
             )
-            assert (
-                after_ctx["crew_id"] is None
-            ), f"Context should be None after kickoff for {result['crew_id']}"
+            assert after_ctx["crew_id"] is None, (
+                f"Context should be None after kickoff for {result['crew_id']}"
+            )
 
             thread_name = before_ctx["thread"]
-            assert (
-                "ThreadPoolExecutor" in thread_name
-            ), f"Should run in thread pool for {result['crew_id']}"
+            assert "ThreadPoolExecutor" in thread_name, (
+                f"Should run in thread pool for {result['crew_id']}"
+            )
 
     @pytest.mark.asyncio
     @patch("crewai.Agent.execute_task")
@@ -134,7 +137,7 @@ class TestCrewThreadSafety:
         mock_execute_task.return_value = "Task completed"
         num_crews = 5
 
-        async def run_crew_async(crew_id: str) -> Dict[str, Any]:
+        async def run_crew_async(crew_id: str) -> dict[str, Any]:
             task_context = {"crew_id": crew_id, "context": None}
 
             def capture_context(output):
@@ -162,12 +165,12 @@ class TestCrewThreadSafety:
             crew_uuid = result["crew_uuid"]
             task_ctx = result["task_context"]["context"]
 
-            assert (
-                task_ctx is not None
-            ), f"Context should exist during task for {result['crew_id']}"
-            assert (
-                task_ctx["crew_id"] == crew_uuid
-            ), f"Context mismatch for {result['crew_id']}"
+            assert task_ctx is not None, (
+                f"Context should exist during task for {result['crew_id']}"
+            )
+            assert task_ctx["crew_id"] == crew_uuid, (
+                f"Context mismatch for {result['crew_id']}"
+            )
 
     @patch("crewai.Agent.execute_task")
     def test_concurrent_kickoff_for_each(self, mock_execute_task, crew_factory):
@@ -193,9 +196,9 @@ class TestCrewThreadSafety:
         assert len(contexts_captured) == len(inputs)
 
         context_ids = [ctx["context_id"] for ctx in contexts_captured]
-        assert len(set(context_ids)) == len(
-            inputs
-        ), "Each execution should have unique context"
+        assert len(set(context_ids)) == len(inputs), (
+            "Each execution should have unique context"
+        )
 
     @patch("crewai.Agent.execute_task")
     def test_no_context_leakage_between_crews(self, mock_execute_task, crew_factory):