old_contents: # Filename: test_ch.py
  # pylint: disable=locally-disabled,C0111,R0904,C0301,C0103,W0212
  from km3pipe.testing import TestCase, patch, Mock
  from km3pipe.io.ch import CHPump
  
  __author__ = "Tamas Gal"
  __copyright__ = "Copyright 2018, Tamas Gal and the KM3NeT collaboration."
  __credits__ = []
  __license__ = "MIT"
  __maintainer__ = "Tamas Gal"
  __email__ = "tgal@km3net.de"
  __status__ = "Development"
  
  
  class TestCHPump(TestCase):
      def test_init(self):
          pass
  
new_contents: # Filename: test_ch.py
  # pylint: disable=locally-disabled,C0111,R0904,C0301,C0103,W0212
  from km3pipe.testing import TestCase, patch, Mock
  from km3pipe.io.ch import CHPump
  
  __author__ = "Tamas Gal"
  __copyright__ = "Copyright 2018, Tamas Gal and the KM3NeT collaboration."
  __credits__ = []
  __license__ = "MIT"
  __maintainer__ = "Tamas Gal"
  __email__ = "tgal@km3net.de"
  __status__ = "Development"
  
  
  class TestCHPump(TestCase):
      @patch("km3pipe.io.ch.CHPump._init_controlhost")
      @patch("km3pipe.io.ch.CHPump._start_thread")
      def test_init(self, init_controlhost_mock, start_thread_mock):
          CHPump()
          init_controlhost_mock.assert_called_once()
          start_thread_mock.assert_called_once()
  
subject: Add a test for CHPump