text: import os
  from pathlib import Path
  
  import pytest
  
  from pipenv.utils.processes import subprocess_run
  
  # This module is run only on Windows.
  pytestmark = pytest.mark.skipif(os.name != 'nt', reason="only relevant on windows")
  
  
  @pytest.mark.project
  def test_case_changes_windows(PipenvInstance):
      """Test project matching for case changes on Windows.
      """
      with PipenvInstance(chdir=True) as p:
          c = p.pipenv('install pytz')
          assert c.returncode == 0
  
          # Canonical venv location.
          c = p.pipenv('--venv')
          assert c.returncode == 0
          virtualenv_location = c.stdout.strip()
  
          # Dance around to change the casing of the project directory.
          target = p.path.upper()
          if target == p.path:
              target = p.path.lower()
          os.chdir('..')
          os.chdir(target)
          assert os.path.abspath(os.curdir) != p.path
  
          # Ensure the incorrectly-cased project can find the correct venv.
          c = p.pipenv('--venv')
          assert c.returncode == 0
          assert c.stdout.strip().lower() == virtualenv_location.lower()
  
  
  @pytest.mark.files
  @pytest.mark.local
  def test_local_path_windows(PipenvInstance):
      whl = (
          Path(__file__).parent.parent
          .joinpath('pypi', 'six', 'six-1.11.0-py2.py3-none-any.whl')
      )
      try:
          whl = whl.resolve()
      except OSError:
          whl = whl.absolute()
      with PipenvInstance(chdir=True) as p:
          c = p.pipenv(f'install "{whl}"')
          assert c.returncode == 0
  
  
  @pytest.mark.local
  @pytest.mark.files
  def test_local_path_windows_forward_slash(PipenvInstance):
      whl = (
          Path(__file__).parent.parent
          .joinpath('pypi', 'six', 'six-1.11.0-py2.py3-none-any.whl')
      )
      try:
          whl = whl.resolve()
      except OSError:
          whl = whl.absolute()
      with PipenvInstance(chdir=True) as p:
          c = p.pipenv(f'install "{whl.as_posix()}"')
          assert c.returncode == 0
  
  
  @pytest.mark.cli
  def test_pipenv_clean_windows(PipenvInstance):
      with PipenvInstance(chdir=True) as p:
          c = p.pipenv('install requests')
          assert c.returncode == 0
          c = p.pipenv(f'run pip install -i {p.index_url} click')
          assert c.returncode == 0
  
          c = p.pipenv('clean --dry-run')
          assert c.returncode == 0
          assert 'click' in c.stdout.strip()
  
  @pytest.mark.cli
  def test_pipenv_run_with_special_chars_windows(PipenvInstance):
      with PipenvInstance():
          c = subprocess_run(["pipenv", "run", "echo", "[3-1]"])
          assert c.returncode == 0, c.stderr
  