def METHOD_NAME(cubes_sic):
    derived_var = siextent.DerivedVariable()
    cubes_sic[0].var_name = 'wrong'
    msg = ('Derivation of siextent failed due to missing variables '
           'sic and siconca.')
    with pytest.raises(RecipeError, match=msg):
        derived_var.calculate(cubes_sic)