old_contents: #! /usr/bin/env python
  # -*- coding: utf-8 -*-
  
  # to execute:
  # $ cd test
  # $ python -m unittest
  
  import unittest
  from smartcard.scard import SCardGetErrorMessage
  from smartcard.scard import SCARD_S_SUCCESS, SCARD_F_INTERNAL_ERROR
  from distutils.util import get_platform
  
  
  class TestError(unittest.TestCase):
  
      def test_SCardGetErrorMessage(self):
          res = SCardGetErrorMessage(SCARD_S_SUCCESS)
  
          # do not test on Windows
          # the error messages are different and localized
          if get_platform() in ('win32', 'win-amd64'):
              return
  
          expected = "Command successful."
          self.assertEqual(res, expected)
  
          res = SCardGetErrorMessage(SCARD_F_INTERNAL_ERROR)
          expected = "Internal error."
          self.assertEqual(res, expected)
  
          res = SCardGetErrorMessage(1)
          # macOS bug not yet fixed
          if get_platform() < 'macosx-10.13':
              expected = "Unkown error: 0x00000001"
          else:
              expected = "Unknown error: 0x00000001"
          self.assertEqual(res, expected)
  
  
  if __name__ == '__main__':
      unittest.main()
  
new_contents: #! /usr/bin/env python
  # -*- coding: utf-8 -*-
  
  # to execute:
  # $ cd test
  # $ python -m unittest
  
  import unittest
  from smartcard.scard import SCardGetErrorMessage
  from smartcard.scard import SCARD_S_SUCCESS, SCARD_F_INTERNAL_ERROR
  from distutils.util import get_platform
  
  
  class TestError(unittest.TestCase):
  
      def test_SCardGetErrorMessage(self):
          res = SCardGetErrorMessage(SCARD_S_SUCCESS)
  
          # do not test on Windows
          # the error messages are different and localized
          if get_platform() in ('win32', 'win-amd64'):
              return
  
          expected = "Command successful."
          self.assertEqual(res, expected)
  
          res = SCardGetErrorMessage(SCARD_F_INTERNAL_ERROR)
          expected = "Internal error."
          self.assertEqual(res, expected)
  
          res = SCardGetErrorMessage(1)
          # macOS bug not yet fixed
          if get_platform().startswith('macosx-') and get_platform() < 'macosx-10.13':
              expected = "Unkown error: 0x00000001"
          else:
              expected = "Unknown error: 0x00000001"
          self.assertEqual(res, expected)
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: fix test for SCardGetErrorMessage(1) on Mojave