old_contents: from __future__ import unicode_literals
  from ...en import English
  import pytest
  
  @pytest.fixture
  def en_tokenizer():
      return English.Defaults.create_tokenizer()
  
  
  @pytest.mark.parametrize('inputs', [("Robin's", "Robin"), ("Alexis's", "Alexis")])
  def test_tokenizer_handles_poss_contraction(en_tokenizer, inputs):
      text_poss, text = inputs
      tokens = en_tokenizer(text_poss)
      assert len(tokens) == 2
      assert tokens[0].text == text
      assert tokens[1].text == "'s"
  
  
  @pytest.mark.parametrize('text', ["schools'", "Alexis'"])
  def test_tokenizer_splits_trailing_apos(en_tokenizer, text):
      tokens = en_tokenizer(text)
      assert len(tokens) == 2
      assert tokens[0].text == text.split("'")[0]
      assert tokens[1].text == "'"
  
  
  @pytest.mark.parametrize('text', ["'em", "nothin'", "ol'"])
  def text_tokenizer_doesnt_split_apos_exc(en_tokenizer, text):
      tokens = en_tokenizer(text)
      assert len(tokens) == 1
      assert tokens[0].text == text
  
  
  @pytest.mark.parametrize('text', ["we'll", "You'll", "there'll"])
  def test_tokenizer_handles_ll_contraction(en_tokenizer, text):
      tokens = en_tokenizer(text)
      assert len(tokens) == 2
      assert tokens[0].text == text.split("'")[0]
      assert tokens[1].text == "'ll"
      assert tokens[1].lemma_ == "will"
  
  
  @pytest.mark.parametrize('inputs', [("can't", "Can't"), ("ain't", "Ain't")])
  def test_tokenizer_handles_capitalization(en_tokenizer, inputs):
      text_lower, text_title = inputs
      tokens_lower = en_tokenizer(text_lower)
      tokens_title = en_tokenizer(text_title)
      assert tokens_title[0].text == tokens_lower[0].text.title()
      assert tokens_lower[0].text == tokens_title[0].text.lower()
      assert tokens_lower[1].text == tokens_title[1].text
  
  
  @pytest.mark.parametrize('pron', ["I", "You", "He", "She", "It", "We", "They"])
  def test_tokenizer_keeps_title_case(en_tokenizer, pron):
      for contraction in ["'ll", "'d"]:
          tokens = en_tokenizer(pron + contraction)
          assert tokens[0].text == pron
          assert tokens[1].text == contraction
  
  
  @pytest.mark.parametrize('exc', ["Ill", "ill", "Hell", "hell", "Well", "well"])
  def test_tokenizer_excludes_ambiguous(en_tokenizer, exc):
      tokens = en_tokenizer(exc)
      assert len(tokens) == 1
  
  
  @pytest.mark.parametrize('inputs', [("We've", "``We've"), ("couldn't", "couldn't)")])
  def test_tokenizer_splits_defined_punct(en_tokenizer, inputs):
      wo_punct, w_punct = inputs
      tokens = en_tokenizer(wo_punct)
      assert len(tokens) == 2
      tokens = en_tokenizer(w_punct)
      assert len(tokens) == 3
  
new_contents: from __future__ import unicode_literals
  
  import pytest
  
  
  @pytest.mark.parametrize('text_poss,text', [("Robin's", "Robin"), ("Alexis's", "Alexis")])
  def test_tokenizer_handles_poss_contraction(en_tokenizer, text_poss, text):
      tokens = en_tokenizer(text_poss)
      assert len(tokens) == 2
      assert tokens[0].text == text
      assert tokens[1].text == "'s"
  
  
  @pytest.mark.parametrize('text', ["schools'", "Alexis'"])
  def test_tokenizer_splits_trailing_apos(en_tokenizer, text):
      tokens = en_tokenizer(text)
      assert len(tokens) == 2
      assert tokens[0].text == text.split("'")[0]
      assert tokens[1].text == "'"
  
  
  @pytest.mark.parametrize('text', ["'em", "nothin'", "ol'"])
  def text_tokenizer_doesnt_split_apos_exc(en_tokenizer, text):
      tokens = en_tokenizer(text)
      assert len(tokens) == 1
      assert tokens[0].text == text
  
  
  @pytest.mark.parametrize('text', ["we'll", "You'll", "there'll"])
  def test_tokenizer_handles_ll_contraction(en_tokenizer, text):
      tokens = en_tokenizer(text)
      assert len(tokens) == 2
      assert tokens[0].text == text.split("'")[0]
      assert tokens[1].text == "'ll"
      assert tokens[1].lemma_ == "will"
  
  
  @pytest.mark.parametrize('text_lower,text_title', [("can't", "Can't"), ("ain't", "Ain't")])
  def test_tokenizer_handles_capitalization(en_tokenizer, text_lower, text_title):
      tokens_lower = en_tokenizer(text_lower)
      tokens_title = en_tokenizer(text_title)
      assert tokens_title[0].text == tokens_lower[0].text.title()
      assert tokens_lower[0].text == tokens_title[0].text.lower()
      assert tokens_lower[1].text == tokens_title[1].text
  
  
  @pytest.mark.parametrize('pron', ["I", "You", "He", "She", "It", "We", "They"])
  @pytest.mark.parametrize('contraction', ["'ll", "'d"])
  def test_tokenizer_keeps_title_case(en_tokenizer, pron, contraction):
      tokens = en_tokenizer(pron + contraction)
      assert tokens[0].text == pron
      assert tokens[1].text == contraction
  
  
  @pytest.mark.parametrize('exc', ["Ill", "ill", "Hell", "hell", "Well", "well"])
  def test_tokenizer_excludes_ambiguous(en_tokenizer, exc):
      tokens = en_tokenizer(exc)
      assert len(tokens) == 1
  
  
  @pytest.mark.parametrize('wo_punct,w_punct', [("We've", "``We've"), ("couldn't", "couldn't)")])
  def test_tokenizer_splits_defined_punct(en_tokenizer, wo_punct, w_punct):
      tokens = en_tokenizer(wo_punct)
      assert len(tokens) == 2
      tokens = en_tokenizer(w_punct)
      assert len(tokens) == 3
  
subject: Update tokenizer tests for contractions