def METHOD_NAME():
    with pytest.raises(TypeError):
        ARCHInMean(SP500, form=0 + 3j, volatility=GARCH())
    with pytest.raises(ValueError):
        ARCHInMean(SP500, form=0, volatility=GARCH())
    with pytest.raises(ValueError):
        ARCHInMean(SP500, form="unknown", volatility=GARCH())