test_fetch_last_ai_and_tool_messages_ai_without_tool_calls() — langchain Function Reference

Source Code

libs/langchain_v1/tests/unit_tests/agents/test_fetch_last_ai_and_tool_messages.py lines 95–107

def test_fetch_last_ai_and_tool_messages_ai_without_tool_calls() -> None:
    """Test AIMessage without tool_calls returns empty tool messages list."""
    messages = [
        HumanMessage(content="Hello"),
        AIMessage(content="Hi! How can I help you today?"),
    ]

    ai_msg, tool_msgs = _fetch_last_ai_and_tool_messages(messages)

    assert ai_msg is not None
    assert isinstance(ai_msg, AIMessage)
    assert ai_msg.content == "Hi! How can I help you today?"
    assert len(tool_msgs) == 0