code: def test_find_abbreviation(self):
      # Basic case
      doc = self.nlp("abbreviation (abbrn)")
      long = doc[0:1]
      short = doc[2:3]
      _, long_form = find_abbreviation(long, short)
      assert long_form.text == "abbreviation"
  
      # Hypenation and numbers within abbreviation
      doc = self.nlp("abbreviation (ab-b9rn)")
      long = doc[0:1]
      short = doc[2:3]
      _, long_form = find_abbreviation(long, short)
      assert long_form.text == "abbreviation"
  
      # No match
      doc = self.nlp("abbreviation (aeb-b9rn)")
      long = doc[0:1]
      short = doc[2:3]
      _, long_form = find_abbreviation(long, short)
      assert long_form is None
  
      # First letter must match start of word.
      doc = self.nlp("aaaabbreviation (ab-b9rn)")
      long = doc[0:1]
      short = doc[2:3]
      _, long_form = find_abbreviation(long, short)
      assert long_form.text == "aaaabbreviation"
  
      # Matching is greedy for first letter (are is not included).
      doc = self.nlp(
          "more words are considered aaaabbreviation (ab-b9rn)"
      )
      long = doc[0:5]
      short = doc[6:7]
      _, long_form = find_abbreviation(long, short)
      assert long_form.text == "aaaabbreviation"
  
file_path: scispacy/tests/test_abbreviation_detection.py
imports: import unittest
  import spacy
  import pytest
  from scispacy.abbreviation import AbbreviationDetector, find_abbreviation, filter_matches
label_desc: Use image node_id 2 for calling the TestAbbreviationDetector obj's underlying member method code with example usage: obj.test_find_abbreviation() without return types