old_contents: """
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program. If not, see <http://www.gnu.org/licenses/>.
  """
  
  import sys
  sys.path.insert(0, ".")
  from datetime import datetime
  import unittest
  from coalib.misc.StringConstants import StringConstants
  from coalib.processes.communication.LogMessage import LogMessage, LOG_LEVEL
  from coalib.output.LogPrinter import LogPrinter
  from coalib.misc.i18n import _
  
  
  class TestLogPrinter(LogPrinter):
      def _print(self, output, special_arg="test"):
          return output, special_arg
  
  
  class LogPrinterTestCase(unittest.TestCase):
      log_message = LogMessage(LOG_LEVEL.ERROR, StringConstants.COMPLEX_TEST_STRING)
  
      def test_interface(self):
          uut = LogPrinter()
          self.assertRaises(NotImplementedError, uut.log, self.log_message)
  
      def test_logging(self):
          uut = TestLogPrinter("")
          self.assertEqual((str(self.log_message), "special"), uut.log(self.log_message, end="", special_arg="special"))
  
          uut = TestLogPrinter()
          ts = datetime.today()
          self.assertEqual(("["+_("ERROR")+"]["+ts.strftime("%X")+"] "+StringConstants.COMPLEX_TEST_STRING,
                            "test"),
                           uut.log(self.log_message, timestamp=ts, end=""))
  
      def test_raises(self):
          uut = LogPrinter()
          self.assertRaises(TypeError, uut.log, 5)
  
  if __name__ == '__main__':
      unittest.main(verbosity=2)
  
new_contents: """
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program. If not, see <http://www.gnu.org/licenses/>.
  """
  
  import sys
  sys.path.insert(0, ".")
  from datetime import datetime
  import unittest
  from coalib.misc.StringConstants import StringConstants
  from coalib.processes.communication.LogMessage import LogMessage, LOG_LEVEL
  from coalib.output.LogPrinter import LogPrinter
  from coalib.misc.i18n import _
  
  
  class TestLogPrinter(LogPrinter):
      def _print(self, output, special_arg="test"):
          return output, special_arg
  
  
  class LogPrinterTestCase(unittest.TestCase):
      log_message = LogMessage(LOG_LEVEL.ERROR, StringConstants.COMPLEX_TEST_STRING)
  
      def test_interface(self):
          uut = LogPrinter()
          self.assertRaises(NotImplementedError, uut.log, self.log_message)
  
      def test_logging(self):
          uut = TestLogPrinter("")
          self.assertEqual((str(self.log_message), "special"), uut.log(self.log_message, end="", special_arg="special"))
  
          uut = TestLogPrinter()
          ts = datetime.today()
          self.assertEqual(("["+_("ERROR")+"]["+ts.strftime("%X")+"] "+StringConstants.COMPLEX_TEST_STRING,
                            "test"),
                           uut.log_message(self.log_message, timestamp=ts, end=""))
  
      def test_raises(self):
          uut = LogPrinter()
          self.assertRaises(TypeError, uut.log, 5)
  
  if __name__ == '__main__':
      unittest.main(verbosity=2)
  
subject: Update LogPrinterTest.py