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test_override_system_prompt_backward_compatibility() — langchain Function Reference

Architecture documentation for the test_override_system_prompt_backward_compatibility() function in test_overrides.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

Dependency Diagram

graph TD
  6a6888fe_f32b_9e63_9cdf_a98611cb16d8["test_override_system_prompt_backward_compatibility()"]
  5e5133af_311a_09ab_c36c_5325b6843847["TestModelRequestOverride"]
  6a6888fe_f32b_9e63_9cdf_a98611cb16d8 -->|defined in| 5e5133af_311a_09ab_c36c_5325b6843847
  style 6a6888fe_f32b_9e63_9cdf_a98611cb16d8 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_overrides.py lines 230–253

    def test_override_system_prompt_backward_compatibility(self) -> None:
        """Test that `system_prompt` kwarg in `override()` converts to `SystemMessage`."""
        model = GenericFakeChatModel(messages=iter([AIMessage(content="Hello")]))
        original_request = ModelRequest(
            model=model,
            system_message=None,
            messages=[HumanMessage("Hi")],
            tool_choice=None,
            tools=[],
            response_format=None,
            state=AgentState(messages=[]),
            runtime=None,
        )

        # Use deprecated system_prompt parameter
        new_request = original_request.override(
            system_prompt="New prompt via deprecated param"  # type: ignore[call-arg]
        )

        assert new_request.system_prompt == "New prompt via deprecated param"
        assert isinstance(new_request.system_message, SystemMessage)
        assert new_request.system_message.content == "New prompt via deprecated param"
        # Original unchanged
        assert original_request.system_message is None

Domain

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Defined In

Source

Frequently Asked Questions

What does test_override_system_prompt_backward_compatibility() do?
test_override_system_prompt_backward_compatibility() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_overrides.py.
Where is test_override_system_prompt_backward_compatibility() defined?
test_override_system_prompt_backward_compatibility() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_overrides.py at line 230.

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