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test_fetch_last_ai_and_tool_messages_normal() — langchain Function Reference

Architecture documentation for the test_fetch_last_ai_and_tool_messages_normal() function in test_fetch_last_ai_and_tool_messages.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

Dependency Diagram

graph TD
  93adba86_bd68_0b22_1123_5d16348cd35c["test_fetch_last_ai_and_tool_messages_normal()"]
  377b132d_d3e1_0d37_8fdd_618ce0d34bb1["test_fetch_last_ai_and_tool_messages.py"]
  93adba86_bd68_0b22_1123_5d16348cd35c -->|defined in| 377b132d_d3e1_0d37_8fdd_618ce0d34bb1
  style 93adba86_bd68_0b22_1123_5d16348cd35c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/test_fetch_last_ai_and_tool_messages.py lines 13–27

def test_fetch_last_ai_and_tool_messages_normal() -> None:
    """Test normal case with AIMessage and subsequent ToolMessages."""
    messages = [
        HumanMessage(content="Hello"),
        AIMessage(content="Hi there!", tool_calls=[{"name": "test", "id": "1", "args": {}}]),
        ToolMessage(content="Tool result", tool_call_id="1"),
    ]

    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 there!"
    assert len(tool_msgs) == 1
    assert tool_msgs[0].content == "Tool result"

Domain

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Defined In

Source

Frequently Asked Questions

What does test_fetch_last_ai_and_tool_messages_normal() do?
test_fetch_last_ai_and_tool_messages_normal() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/test_fetch_last_ai_and_tool_messages.py.
Where is test_fetch_last_ai_and_tool_messages_normal() defined?
test_fetch_last_ai_and_tool_messages_normal() is defined in libs/langchain_v1/tests/unit_tests/agents/test_fetch_last_ai_and_tool_messages.py at line 13.

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