test_pydantic_tools_parser_unknown_tool_raises_output_parser_exception() — langchain Function Reference

Source Code

libs/core/tests/unit_tests/output_parsers/test_openai_tools.py lines 1430–1454

def test_pydantic_tools_parser_unknown_tool_raises_output_parser_exception(
    partial: bool,  # noqa: FBT001
) -> None:
    class KnownTool(BaseModel):
        value: int

    parser = PydanticToolsParser(tools=[KnownTool])
    message = AIMessage(
        content="",
        tool_calls=[
            {
                "id": "call_unknown",
                "name": "UnknownTool",
                "args": {"value": 1},
            }
        ],
    )
    generation = ChatGeneration(message=message)

    with pytest.raises(OutputParserException) as excinfo:
        parser.parse_result([generation], partial=partial)

    msg = str(excinfo.value)
    assert "Unknown tool type" in msg
    assert "UnknownTool" in msg