code: def test_get_ordered_tokens_from_vocab(vocab, expected_output):
      assert get_ordered_tokens_from_vocab(vocab) == expected_output
  
file_path: sockeye/test/unit/test_vocab.py
imports: import pytest
  from unittest import mock
  from collections import Counter
  import sockeye.constants
  from sockeye.vocab import build_vocab, get_ordered_tokens_from_vocab, is_valid_vocab, _get_sorted_source_vocab_fnames, count_tokens
label_desc: Use image node_id 5 for calling a global function with example usage: test_get_ordered_tokens_from_vocab(vocab, expected_output) without return types