def METHOD_NAME(self, model):
    assert pytest.approx(10e-14, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "H2O"]
    )
    assert pytest.approx(18.00, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "A"]
    )
    assert pytest.approx(32.00, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "B"]
    )
    assert pytest.approx(42.00, rel=1e-5) == value(
        model.fs.unit.treated.flow_mass_comp[0, "C"]
    )