old_contents: # coding: utf-8
  from __future__ import unicode_literals
  
  from ..util import ensure_path
  
  from pathlib import Path
  import pytest
  
  
  @pytest.mark.parametrize('text', ['hello/world', 'hello world'])
  def test_util_ensure_path_succeeds(text):
      path = ensure_path(text)
      assert isinstance(path, Path)
  
  
  @pytest.mark.parametrize('text', [b'hello/world', True, False, None])
  def test_util_ensure_path_fails(text):
      path = ensure_path(text)
      assert not isinstance(path, Path)
  
new_contents: # coding: utf-8
  from __future__ import unicode_literals
  
  from ..util import ensure_path
  
  from pathlib import Path
  import pytest
  
  
  @pytest.mark.parametrize('text', ['hello/world', 'hello world'])
  def test_util_ensure_path_succeeds(text):
      path = ensure_path(text)
      assert isinstance(path, Path)
  
subject: Remove unnecessary test