def METHOD_NAME(dest_rse, mock_request, file_config_mock):
    set_transfer_limit(
        dest_rse['name'],
        activity=mock_request['activity'],
        max_transfers=1,
        strategy='fifo',
    )
    list(list_transfer_limits())
    preparer(once=True, transfertools=['mock'], partition_wait_time=0)
    updated_mock_request = get_request(mock_request['id'])
    assert updated_mock_request['state'] == RequestState.WAITING