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test_multiple_overrides_with_system_message() — langchain Function Reference

Architecture documentation for the test_multiple_overrides_with_system_message() function in test_system_message.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

Dependency Diagram

graph TD
  8038197f_575d_3162_5f45_8616dead3bcc["test_multiple_overrides_with_system_message()"]
  fdcac224_4658_3042_d41f_938e751993a3["TestModelRequestSystemMessage"]
  8038197f_575d_3162_5f45_8616dead3bcc -->|defined in| fdcac224_4658_3042_d41f_938e751993a3
  style 8038197f_575d_3162_5f45_8616dead3bcc fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

libs/langchain_v1/tests/unit_tests/agents/test_system_message.py lines 279–302

    def test_multiple_overrides_with_system_message(self) -> None:
        """Test chaining overrides with system_message."""
        model = GenericFakeChatModel(messages=iter([AIMessage(content="Hello")]))

        original_request = ModelRequest(
            model=model,
            system_message=SystemMessage(content="Prompt 1"),
            messages=[],
            tool_choice=None,
            tools=[],
            response_format=None,
            state=AgentState(messages=[]),
            runtime=None,
        )

        final_request = (
            original_request.override(system_message=SystemMessage(content="Prompt 2"))
            .override(tool_choice="auto")
            .override(system_message=SystemMessage(content="Prompt 3"))
        )

        assert final_request.system_prompt == "Prompt 3"
        assert final_request.tool_choice == "auto"
        assert original_request.system_prompt == "Prompt 1"

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Frequently Asked Questions

What does test_multiple_overrides_with_system_message() do?
test_multiple_overrides_with_system_message() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/test_system_message.py.
Where is test_multiple_overrides_with_system_message() defined?
test_multiple_overrides_with_system_message() is defined in libs/langchain_v1/tests/unit_tests/agents/test_system_message.py at line 279.

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