def random_state_tuple_axis_1(request):
    """
    Specific to `test_sample*_axis_1` tests.
    A pytest fixture of valid `random_state` parameter pairs for pandas
    and cudf. Valid parameter combinations, and what to check for each pair
    are listed below:

    pandas:   None,   seed(int),  np.random.RandomState
    cudf:     None,   seed(int),  np.random.RandomState
    ------
    check:    shape,  shape,      exact result

    Each column above stands for one valid parameter combination and check.
    """

    return request.param