def METHOD_NAME(self, model):
    assert model.fs.unit.config.database is model.db
    assert model.fs.unit._tech_type == "static_mixer"
    assert isinstance(model.fs.unit.electricity, Var)
    assert isinstance(model.fs.unit.energy_electric_flow_vol_inlet, Var)
    assert isinstance(model.fs.unit.electricity_consumption, Constraint)