def METHOD_NAME(self, load_forcing, legal_forcing):
    forcing = load_forcing
    forcing.using(legal_forcing, 3, 4.0, "5", k=1, l_var="2", j=3.0)
    assert forcing._forcing_cls == legal_forcing
    assert forcing._args == (3, 4.0, "5")
    assert forcing._kwargs == {"k": 1, "l_var": "2", "j": 3.0}