def METHOD_NAME(self, model):
    assert pytest.approx(1000, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "H2O"]
    )
    assert pytest.approx(9, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "A"]
    )
    assert pytest.approx(16, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "B"]
    )
    assert pytest.approx(21, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "C"]
    )