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TestMiddleware Class — langchain Architecture

Architecture documentation for the TestMiddleware class in test_state_schema.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  be0b0f4a_a727_78cd_c887_3f6b96270b40["TestMiddleware"]
  3d4a3f09_0839_f785_dcfd_f1e7b13e3204["test_state_schema.py"]
  be0b0f4a_a727_78cd_c887_3f6b96270b40 -->|defined in| 3d4a3f09_0839_f785_dcfd_f1e7b13e3204
  e9c0ce14_d33f_7641_2350_cd379e713bff["before_model()"]
  be0b0f4a_a727_78cd_c887_3f6b96270b40 -->|method| e9c0ce14_d33f_7641_2350_cd379e713bff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/test_state_schema.py lines 126–131

    class TestMiddleware(AgentMiddleware[MiddlewareState, None]):
        state_schema = MiddlewareState

        def before_model(self, state: MiddlewareState, runtime: Runtime) -> dict[str, Any]:
            middleware_calls.append(state["middleware_data"])
            return {}

Defined In

Source

Frequently Asked Questions

What is the TestMiddleware class?
TestMiddleware is a class in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/test_state_schema.py.
Where is TestMiddleware defined?
TestMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/test_state_schema.py at line 126.

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