old_contents: # -*- coding: utf-8 -*-
  """Test suite for the deepreload module."""
  
  # Copyright (c) IPython Development Team.
  # Distributed under the terms of the Modified BSD License.
  
  import os
  
  import nose.tools as nt
  
  from IPython.utils.syspathcontext import prepended_to_syspath
  from IPython.utils.tempdir import TemporaryDirectory
  from IPython.lib.deepreload import reload as dreload
  
  def test_deepreload():
      "Test that dreload does deep reloads and skips excluded modules."
      with TemporaryDirectory() as tmpdir:
          with prepended_to_syspath(tmpdir):
              with open(os.path.join(tmpdir, 'A.py'), 'w') as f:
                  f.write("class Object(object):\n    pass\n")
              with open(os.path.join(tmpdir, 'B.py'), 'w') as f:
                  f.write("import A\n")
              import A
              import B
  
              # Test that A is not reloaded.
              obj = A.Object()
              dreload(B, exclude=['A'])
              nt.assert_true(isinstance(obj, A.Object))
  
              # Test that A is reloaded.
              obj = A.Object()
              dreload(B)
              nt.assert_false(isinstance(obj, A.Object))
  
new_contents: # -*- coding: utf-8 -*-
  """Test suite for the deepreload module."""
  
  # Copyright (c) IPython Development Team.
  # Distributed under the terms of the Modified BSD License.
  
  from pathlib import Path
  
  import nose.tools as nt
  
  from IPython.utils.syspathcontext import prepended_to_syspath
  from IPython.utils.tempdir import TemporaryDirectory
  from IPython.lib.deepreload import reload as dreload
  
  def test_deepreload():
      "Test that dreload does deep reloads and skips excluded modules."
      with TemporaryDirectory() as tmpdir:
          with prepended_to_syspath(tmpdir):
              tmpdirpath = Path(tmpdir)
              with open( tmpdirpath / 'A.py' , 'w') as f:
                  f.write("class Object(object):\n    pass\n")
              with open( tmpdirpath / 'B.py' , 'w') as f:
                  f.write("import A\n")
              import A
              import B
  
              # Test that A is not reloaded.
              obj = A.Object()
              dreload(B, exclude=['A'])
              nt.assert_true(isinstance(obj, A.Object))
  
              # Test that A is reloaded.
              obj = A.Object()
              dreload(B)
              nt.assert_false(isinstance(obj, A.Object))
  
subject: use pathlib on test_deepreload