feat: add fixed time to fix test

tests/agent_test.py

@@ -1,6 +1,7 @@
 """Test Agent creation and execution basic functionality."""
 
 import os
+from datetime import UTC, datetime, timezone
 from unittest import mock
 from unittest.mock import patch
 
@@ -908,6 +909,8 @@ def test_tool_result_as_answer_is_the_final_answer_for_the_agent():
 
 @pytest.mark.vcr(filter_headers=["authorization"])
 def test_tool_usage_information_is_appended_to_agent():
+    from datetime import UTC, datetime
+
     from crewai.tools import BaseTool
 
     class MyCustomTool(BaseTool):
@@ -917,6 +920,11 @@ def test_tool_usage_information_is_appended_to_agent():
         def _run(self) -> str:
             return "Howdy!"
 
+    fixed_datetime = datetime(2025, 2, 10, 12, 0, 0, tzinfo=UTC)
+    with patch("crewai.tools.tool_usage.datetime") as mock_datetime:
+        mock_datetime.now.return_value = fixed_datetime
+        mock_datetime.UTC = UTC
+
         agent1 = Agent(
             role="Friendly Neighbor",
             goal="Make everyone feel welcome",
@@ -939,6 +947,7 @@ def test_tool_usage_information_is_appended_to_agent():
                 "tool_name": "Decide Greetings",
                 "tool_args": {},
                 "result_as_answer": True,
+                "start_time": fixed_datetime,
             }
         ]