code: def test_levenshtein(dist, a, b):
      assert levenshtein(a, b) == dist
  
imports: import pytest
  from spacy.matcher import levenshtein
  from spacy.matcher.levenshtein import levenshtein_compare
label_desc: Use image node_id 1 for calling a global function with example usage: test_levenshtein(dist, a, b) without return types