def METHOD_NAME(self):
    with assert_raises(ValueError):
        SOD(n_neighbors=None, ref_set=10, alpha=0.8)
    with assert_raises(ValueError):
        SOD(n_neighbors=20, ref_set=None, alpha=0.8)
    with assert_raises(ValueError):
        SOD(n_neighbors=20, ref_set=10, alpha=None)
    with assert_raises(ValueError):
        SOD(n_neighbors=-1, ref_set=10, alpha=0.8)
    with assert_raises(ValueError):
        SOD(n_neighbors=20, ref_set=-1, alpha=0.8)
    with assert_raises(ValueError):
        SOD(n_neighbors=20, ref_set=10, alpha=-1)
    with assert_raises(ValueError):
        SOD(n_neighbors=20, ref_set=25, alpha=0.8)
    with assert_raises(ValueError):
        SOD(n_neighbors='not int', ref_set=25, alpha=0.8)
    with assert_raises(ValueError):
        SOD(n_neighbors=20, ref_set='not int', alpha=0.8)
    with assert_raises(ValueError):
        SOD(n_neighbors=20, ref_set=25, alpha='not float')