text: """Tests for utils.io"""
  
  # Copyright (c) Jupyter Development Team.
  # Distributed under the terms of the Modified BSD License.
  
  import io as stdlib_io
  import sys
  from io import StringIO
  
  from ..io import unicode_std_stream
  
  
  def test_UnicodeStdStream():
      # Test wrapping a bytes-level stdout
      stdoutb = stdlib_io.BytesIO()
      stdout = stdlib_io.TextIOWrapper(stdoutb, encoding="ascii")
  
      orig_stdout = sys.stdout
      sys.stdout = stdout
      try:
          sample = "@łe¶ŧ←"
          unicode_std_stream().write(sample)
  
          output = stdoutb.getvalue().decode("utf-8")
          assert output == sample
          assert not stdout.closed
      finally:
          sys.stdout = orig_stdout
  
  
  def test_UnicodeStdStream_nowrap():
      # If we replace stdout with a StringIO, it shouldn't get wrapped.
      orig_stdout = sys.stdout
      sys.stdout = StringIO()
      try:
          assert unicode_std_stream() is sys.stdout
          assert not sys.stdout.closed
      finally:
          sys.stdout = orig_stdout
  