feat: support to define a task guardrail using YAML config

tests/project_test.py

@@ -1,4 +1,5 @@
 from typing import List
+from unittest.mock import patch
 
 import pytest
 
@@ -142,8 +143,31 @@ def test_agent_function_calling_llm():
     ), "agent's function_calling_llm is incorrect"
 
 
+# VCR could not record the request to localhost from Docker to get it version, so we need to mock the tool.
+# TODO: We can remove this mock after some issue such as https://github.com/kevin1024/vcrpy/issues/519 been addressed
+@pytest.fixture
+def code_interpreter_tool_mock():
+    with patch(
+        "crewai_tools.tools.code_interpreter_tool.code_interpreter_tool.CodeInterpreterTool._run",
+        return_value="(True, 'good result')",
+    ):
+        yield
+
+
+def test_task_guardrail(code_interpreter_tool_mock):
+    crew = InternalCrew()
+    research_task = crew.research_task()
+    assert (
+        research_task.guardrail
+        == "make sure each bullet contains a minimum of 100 words"
+    )
+
+    reporting_task = crew.reporting_task()
+    assert reporting_task.guardrail is None
+
+
 @pytest.mark.vcr(filter_headers=["authorization"])
-def test_before_kickoff_modification():
+def test_before_kickoff_modification(code_interpreter_tool_mock):
     crew = InternalCrew()
     inputs = {"topic": "LLMs"}
     result = crew.crew().kickoff(inputs=inputs)
@@ -151,7 +175,7 @@ def test_before_kickoff_modification():
 
 
 @pytest.mark.vcr(filter_headers=["authorization"])
-def test_after_kickoff_modification():
+def test_after_kickoff_modification(code_interpreter_tool_mock):
     crew = InternalCrew()
     # Assuming the crew execution returns a dict
     result = crew.crew().kickoff({"topic": "LLMs"})
@@ -162,14 +186,14 @@ def test_after_kickoff_modification():
 
 
 @pytest.mark.vcr(filter_headers=["authorization"])
-def test_before_kickoff_with_none_input():
+def test_before_kickoff_with_none_input(code_interpreter_tool_mock):
     crew = InternalCrew()
     crew.crew().kickoff(None)
     # Test should pass without raising exceptions
 
 
 @pytest.mark.vcr(filter_headers=["authorization"])
-def test_multiple_before_after_kickoff():
+def test_multiple_before_after_kickoff(code_interpreter_tool_mock):
     @CrewBase
     class MultipleHooksCrew:
         agents: List[BaseAgent]