Python: [BREAKING] changed AIFunction to FunctionTool and @ai_function to @tool (#3413)

* changed AIFunction to FunctionTool and @ai_function to @tool

* test and mypy fixes

* mypy fix

* switch function tool to always_require

* fix noop

* fix github copilot imports

* test fixes

* fix ollama test

* fixes for tests

* fix tests

* reverted change to always_require and extended timeout

* fix test

python/packages/github_copilot/agent_framework_github_copilot/_agent.py

@@ -19,7 +19,7 @@ from agent_framework import (
     Role,
     normalize_messages,
 )
-from agent_framework._tools import AIFunction, ToolProtocol
+from agent_framework._tools import FunctionTool, ToolProtocol
 from agent_framework._types import normalize_tools
 from agent_framework.exceptions import ServiceException, ServiceInitializationError
 from copilot import CopilotClient, CopilotSession
@@ -417,8 +417,8 @@ class GithubCopilotAgent(BaseAgent, Generic[TOptions]):
         for tool in tools:
             if isinstance(tool, ToolProtocol):
                 match tool:
-                    case AIFunction():
-                        copilot_tools.append(self._ai_function_to_copilot_tool(tool))  # type: ignore
+                    case FunctionTool():
+                        copilot_tools.append(self._tool_to_copilot_tool(tool))  # type: ignore
                     case _:
                         logger.debug(f"Unsupported tool type: {type(tool)}")
             elif isinstance(tool, CopilotTool):
@@ -426,8 +426,8 @@ class GithubCopilotAgent(BaseAgent, Generic[TOptions]):
 
         return copilot_tools
 
-    def _ai_function_to_copilot_tool(self, ai_func: AIFunction[Any, Any]) -> CopilotTool:
-        """Convert an AIFunction to a Copilot SDK tool."""
+    def _tool_to_copilot_tool(self, ai_func: FunctionTool[Any, Any]) -> CopilotTool:
+        """Convert an FunctionTool to a Copilot SDK tool."""
 
         async def handler(invocation: ToolInvocation) -> ToolResult:
             args = invocation.get("arguments", {})

python/packages/github_copilot/tests/test_github_copilot_agent.py

@@ -7,7 +7,14 @@ from unittest.mock import AsyncMock, MagicMock, patch
 from uuid import uuid4
 
 import pytest
-from agent_framework import AgentResponse, AgentResponseUpdate, AgentThread, ChatMessage, Content, Role
+from agent_framework import (
+    AgentResponse,
+    AgentResponseUpdate,
+    AgentThread,
+    ChatMessage,
+    Content,
+    Role,
+)
 from agent_framework.exceptions import ServiceException
 from copilot.generated.session_events import Data, SessionEvent, SessionEventType
 
@@ -733,10 +740,10 @@ class TestGithubCopilotAgentToolConversion:
         mock_client: MagicMock,
     ) -> None:
         """Test that mixed tool types are handled correctly."""
-        from agent_framework._tools import ai_function
+        from agent_framework import tool
         from copilot.types import Tool as CopilotTool
 
-        @ai_function
+        @tool(approval_mode="never_require")
         def my_function(arg: str) -> str:
             """A function tool."""
             return arg
@@ -754,7 +761,7 @@ class TestGithubCopilotAgentToolConversion:
         result = agent._prepare_tools([my_function, copilot_tool])  # type: ignore
 
         assert len(result) == 2
-        # First tool is converted AIFunction
+        # First tool is converted FunctionTool
         assert result[0].name == "my_function"
         # Second tool is CopilotTool passthrough
         assert result[1] == copilot_tool