def METHOD_NAME():
    """Tests redundant sp and k pairs are dropped if their equivalents exist."""
    transformer = FourierFeatures(sp_list=[12, 9, 3], fourier_terms_list=[4, 3, 1])
    transformer.fit(Y)
    assert transformer.sp_k_pairs_list_ == [
        (12, 1),
        (12, 2),
        (12, 3),
        (12, 4),
        (9, 1),
        (9, 2),
    ]