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test_summarization_middleware_find_safe_cutoff_point_orphan_tool() — langchain Function Reference

Architecture documentation for the test_summarization_middleware_find_safe_cutoff_point_orphan_tool() function in test_summarization.py from the langchain codebase.

Function python LangChainCore ApiManagement

Entity Profile

Dependency Diagram

graph TD
  7560d745_e956_e708_ea17_bf5eff9b9521["test_summarization_middleware_find_safe_cutoff_point_orphan_tool()"]
  1911a463_b67d_0301_5ef1_5c535dafc14a["test_summarization.py"]
  7560d745_e956_e708_ea17_bf5eff9b9521 -->|defined in| 1911a463_b67d_0301_5ef1_5c535dafc14a
  style 7560d745_e956_e708_ea17_bf5eff9b9521 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_summarization.py lines 823–839

def test_summarization_middleware_find_safe_cutoff_point_orphan_tool() -> None:
    """Test `_find_safe_cutoff_point` with truly orphan `ToolMessage` (no matching `AIMessage`)."""
    model = FakeToolCallingModel()
    middleware = SummarizationMiddleware(
        model=model, trigger=("messages", 10), keep=("messages", 2)
    )

    # Messages where ToolMessage has no matching AIMessage at all
    messages: list[AnyMessage] = [
        HumanMessage(content="msg1"),
        AIMessage(content="ai_no_tools"),  # No tool_calls
        ToolMessage(content="orphan_result", tool_call_id="orphan_call"),
        HumanMessage(content="msg2"),
    ]

    # Starting at orphan ToolMessage falls back to advancing forward
    assert middleware._find_safe_cutoff_point(messages, 2) == 3

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Frequently Asked Questions

What does test_summarization_middleware_find_safe_cutoff_point_orphan_tool() do?
test_summarization_middleware_find_safe_cutoff_point_orphan_tool() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_summarization.py.
Where is test_summarization_middleware_find_safe_cutoff_point_orphan_tool() defined?
test_summarization_middleware_find_safe_cutoff_point_orphan_tool() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/implementations/test_summarization.py at line 823.

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