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test_override_with_none_value() — langchain Function Reference

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

Function python LangChainCore MessageInterface

Entity Profile

Dependency Diagram

graph TD
  5a8ef67e_52fc_b588_a065_bb77b618f280["test_override_with_none_value()"]
  5e5133af_311a_09ab_c36c_5325b6843847["TestModelRequestOverride"]
  5a8ef67e_52fc_b588_a065_bb77b618f280 -->|defined in| 5e5133af_311a_09ab_c36c_5325b6843847
  style 5a8ef67e_52fc_b588_a065_bb77b618f280 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_overrides.py lines 127–149

    def test_override_with_none_value(self) -> None:
        """Test overriding with None value."""
        model = GenericFakeChatModel(messages=iter([AIMessage(content="Hello")]))
        original_request = ModelRequest(
            model=model,
            system_message=SystemMessage("Original prompt"),
            messages=[HumanMessage("Hi")],
            tool_choice="auto",
            tools=[],
            response_format=None,
            state=AgentState(messages=[]),
            runtime=None,
        )

        new_request = original_request.override(
            system_message=None,
            tool_choice=None,
        )

        assert new_request.system_message is None
        assert new_request.tool_choice is None
        assert original_request.system_message == SystemMessage("Original prompt")
        assert original_request.tool_choice == "auto"

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Defined In

Source

Frequently Asked Questions

What does test_override_with_none_value() do?
test_override_with_none_value() 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_with_none_value() defined?
test_override_with_none_value() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_overrides.py at line 127.

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