code: def test_define_parallel_buckets(
      max_seq_len_source,
      max_seq_len_target,
      bucket_width,
      bucket_scaling,
      length_ratio,
      expected_buckets,
  ):
      buckets = data_io.define_parallel_buckets(
          max_seq_len_source,
          max_seq_len_target,
          bucket_width=bucket_width,
          bucket_scaling=bucket_scaling,
          length_ratio=length_ratio,
      )
      assert buckets == expected_buckets
  
imports: import os
  import random
  from tempfile import TemporaryDirectory
  from typing import Optional, List, Tuple
  import numpy
  import pytest
  import torch
  from sockeye import constants
  from sockeye import data_io
  from sockeye import utils
  from sockeye import vocab
  from sockeye.test_utils import tmp_digits_dataset
  from sockeye.utils import SockeyeError, get_tokens, seed_rngs
label_desc: Use image node_id 2 for calling a global function with example usage: test_define_parallel_buckets(max_seq_len_source, max_seq_len_target, bucket_width, bucket_scaling, length_ratio, expected_buckets) without return types