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test_multiple_old_style_middlewares() — langchain Function Reference

Architecture documentation for the test_multiple_old_style_middlewares() function in test_middleware_backwards_compat.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

Dependency Diagram

graph TD
  f38e9673_03fe_6d6e_c44e_7d93384d33d9["test_multiple_old_style_middlewares()"]
  74d2d22f_07ae_c5bb_33c3_7da58e2da5a0["test_middleware_backwards_compat.py"]
  f38e9673_03fe_6d6e_c44e_7d93384d33d9 -->|defined in| 74d2d22f_07ae_c5bb_33c3_7da58e2da5a0
  style f38e9673_03fe_6d6e_c44e_7d93384d33d9 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py lines 237–251

def test_multiple_old_style_middlewares(fake_model: GenericFakeChatModel) -> None:
    """Multiple old-style middlewares can be combined."""
    agent = create_agent(
        model=fake_model,
        middleware=[
            OldStyleMiddleware1(),
            OldStyleMiddleware2(),
            OldStyleMiddleware3(),
            old_style_decorator,
            OldStyleModelResponseMiddleware(),
        ],
    )
    result = agent.invoke({"messages": [HumanMessage(content="hi")]})
    assert "messages" in result
    assert len(result["messages"]) >= 1

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Defined In

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Frequently Asked Questions

What does test_multiple_old_style_middlewares() do?
test_multiple_old_style_middlewares() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py.
Where is test_multiple_old_style_middlewares() defined?
test_multiple_old_style_middlewares() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py at line 237.

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