test_model_response_with_response_type() — langchain Function Reference

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_typing.py lines 414–424

def test_model_response_with_response_type() -> None:
    """Test that ModelResponse preserves ResponseT."""
    response: ModelResponse[AnalysisResult] = ModelResponse(
        result=[AIMessage(content="test")],
        structured_response=AnalysisResult(sentiment="positive", confidence=0.9),
    )

    # Type checker knows structured_response is AnalysisResult | None
    if response.structured_response is not None:
        _sentiment: str = response.structured_response.sentiment
        _confidence: float = response.structured_response.confidence