code: def test_build_vocab(data, size, min_count, expected):
      vocab = build_vocab(
          data=data, num_words=size, min_count=min_count
      )
      assert vocab == expected
  
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 2 for calling a global function with example usage: test_build_vocab(data, size, min_count, expected) without return types