def METHOD_NAME(self, system_frame):
    m = system_frame
    add_costing(m)
    m.fs.costing.initialize()
    results = solve(m)
    assert_optimal_termination(results)
    # check costing
    assert value(m.fs.costing.LCOW) == pytest.approx(
        2.170813986, rel=1e-3
    )  # in $/m**3
    assert value(m.fs.costing.LCOS) == pytest.approx(6.528763868, rel=1e-3)