test_parse_with_different_pydantic_2_proper() — langchain Function Reference

Source Code

libs/core/tests/unit_tests/output_parsers/test_openai_tools.py lines 844–874

def test_parse_with_different_pydantic_2_proper() -> None:
    """Test with pydantic.BaseModel from pydantic 2."""

    class Forecast(BaseModel):
        temperature: int
        forecast: str

    # Can't get pydantic to work here due to the odd typing of tryig to support
    # both v1 and v2 in the same codebase.
    parser = PydanticToolsParser(tools=[Forecast])
    message = AIMessage(
        content="",
        tool_calls=[
            {
                "id": "call_OwL7f5PE",
                "name": "Forecast",
                "args": {"temperature": 20, "forecast": "Sunny"},
            }
        ],
    )

    generation = ChatGeneration(
        message=message,
    )

    assert parser.parse_result([generation]) == [
        Forecast(
            temperature=20,
            forecast="Sunny",
        )
    ]