def METHOD_NAME(self):
    for sparse_type in self._sparse_types:
        for M in self._test_matrices:
            S = sparse_type(M)
            for axis in (0, 1, -1, -2, (0, ), (1, ), (-1, ), (-2, )):
                assert_allclose(spnorm(S, axis=axis), npnorm(M, axis=axis))
                for ord in None, 2, np.inf, -np.inf, 1, 0.5, 0.42:
                    assert_allclose(spnorm(S, ord, axis=axis),
                                    npnorm(M, ord, axis=axis))