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test_two_handlers_with_commands() — langchain Function Reference

Architecture documentation for the test_two_handlers_with_commands() function in test_composition.py from the langchain codebase.

Function python LangChainCore Runnables calls 2

Entity Profile

Dependency Diagram

graph TD
  a71fe78b_b173_b78f_9635_f0879410586c["test_two_handlers_with_commands()"]
  f1e766c6_5a64_9e6c_f2a8_d41c64f6f142["TestChainModelCallHandlers"]
  a71fe78b_b173_b78f_9635_f0879410586c -->|defined in| f1e766c6_5a64_9e6c_f2a8_d41c64f6f142
  3988450e_19ed_2280_0a85_e9520f7f556b["create_test_request()"]
  a71fe78b_b173_b78f_9635_f0879410586c -->|calls| 3988450e_19ed_2280_0a85_e9520f7f556b
  1cdbb163_cfa8_588a_643a_640bbf32247f["create_mock_base_handler()"]
  a71fe78b_b173_b78f_9635_f0879410586c -->|calls| 1cdbb163_cfa8_588a_643a_640bbf32247f
  style a71fe78b_b173_b78f_9635_f0879410586c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_composition.py lines 96–126

    def test_two_handlers_with_commands(self) -> None:
        """Test that commands from inner and outer are collected correctly."""

        def outer(
            request: ModelRequest, handler: Callable[[ModelRequest], ModelResponse]
        ) -> ExtendedModelResponse:
            response = handler(request)
            return ExtendedModelResponse(
                model_response=response,
                command=Command(update={"outer_key": "outer_val"}),
            )

        def inner(
            request: ModelRequest, handler: Callable[[ModelRequest], ModelResponse]
        ) -> ExtendedModelResponse:
            response = handler(request)
            return ExtendedModelResponse(
                model_response=response,
                command=Command(update={"inner_key": "inner_val"}),
            )

        composed = _chain_model_call_handlers([outer, inner])
        assert composed is not None

        result = composed(create_test_request(), create_mock_base_handler())

        assert isinstance(result, _ComposedExtendedModelResponse)
        # Commands are collected: inner first, then outer
        assert len(result.commands) == 2
        assert result.commands[0].update == {"inner_key": "inner_val"}
        assert result.commands[1].update == {"outer_key": "outer_val"}

Domain

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Defined In

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Source

Frequently Asked Questions

What does test_two_handlers_with_commands() do?
test_two_handlers_with_commands() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_composition.py.
Where is test_two_handlers_with_commands() defined?
test_two_handlers_with_commands() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_composition.py at line 96.
What does test_two_handlers_with_commands() call?
test_two_handlers_with_commands() calls 2 function(s): create_mock_base_handler, create_test_request.

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