old_contents: """ Defines a dummy socket implementing (part of) the zmq.Socket interface. """
  
  #-----------------------------------------------------------------------------
  #  Copyright (C) 2012  The IPython Development Team
  #
  #  Distributed under the terms of the BSD License.  The full license is in
  #  the file COPYING, distributed as part of this software.
  #-----------------------------------------------------------------------------
  
  #-----------------------------------------------------------------------------
  # Imports
  #-----------------------------------------------------------------------------
  
  # Standard library imports.
  import abc
  try:
      from queue import Queue  # Py 3
  except ImportError:
      from Queue import Queue  # Py 2
  
  # System library imports.
  import zmq
  
  # Local imports.
  from IPython.utils.traitlets import HasTraits, Instance, Int
  from IPython.utils.py3compat import with_metaclass
  
  #-----------------------------------------------------------------------------
  # Generic socket interface
  #-----------------------------------------------------------------------------
  
  class SocketABC(with_metaclass(abc.ABCMeta, object)):
      @abc.abstractmethod
      def recv_multipart(self, flags=0, copy=True, track=False):
          raise NotImplementedError
  
      @abc.abstractmethod
      def send_multipart(self, msg_parts, flags=0, copy=True, track=False):
          raise NotImplementedError
  
  SocketABC.register(zmq.Socket)
  
  #-----------------------------------------------------------------------------
  # Dummy socket class
  #-----------------------------------------------------------------------------
  
  class DummySocket(HasTraits):
      """ A dummy socket implementing (part of) the zmq.Socket interface. """
      
      queue = Instance(Queue, ())
      message_sent = Int(0) # Should be an Event
  
      #-------------------------------------------------------------------------
      # Socket interface
      #-------------------------------------------------------------------------
  
      def recv_multipart(self, flags=0, copy=True, track=False):
          return self.queue.get_nowait()
  
      def send_multipart(self, msg_parts, flags=0, copy=True, track=False):
          msg_parts = map(zmq.Message, msg_parts)
          self.queue.put_nowait(msg_parts)
          self.message_sent += 1
  
  SocketABC.register(DummySocket)
  
new_contents: """ Defines a dummy socket implementing (part of) the zmq.Socket interface. """
  
  #-----------------------------------------------------------------------------
  #  Copyright (C) 2012  The IPython Development Team
  #
  #  Distributed under the terms of the BSD License.  The full license is in
  #  the file COPYING, distributed as part of this software.
  #-----------------------------------------------------------------------------
  
  #-----------------------------------------------------------------------------
  # Imports
  #-----------------------------------------------------------------------------
  
  # Standard library imports.
  import abc
  try:
      from queue import Queue  # Py 3
  except ImportError:
      from Queue import Queue  # Py 2
  
  # System library imports.
  import zmq
  
  # Local imports.
  from IPython.utils.traitlets import HasTraits, Instance, Int
  from IPython.utils.py3compat import with_metaclass
  
  #-----------------------------------------------------------------------------
  # Generic socket interface
  #-----------------------------------------------------------------------------
  
  class SocketABC(with_metaclass(abc.ABCMeta, object)):
      @abc.abstractmethod
      def recv_multipart(self, flags=0, copy=True, track=False):
          raise NotImplementedError
  
      @abc.abstractmethod
      def send_multipart(self, msg_parts, flags=0, copy=True, track=False):
          raise NotImplementedError
  
  SocketABC.register(zmq.Socket)
  
  #-----------------------------------------------------------------------------
  # Dummy socket class
  #-----------------------------------------------------------------------------
  
  class DummySocket(HasTraits):
      """ A dummy socket implementing (part of) the zmq.Socket interface. """
      
      queue = Instance(Queue, ())
      message_sent = Int(0) # Should be an Event
  
      #-------------------------------------------------------------------------
      # Socket interface
      #-------------------------------------------------------------------------
  
      def recv_multipart(self, flags=0, copy=True, track=False):
          return self.queue.get_nowait()
  
      def send_multipart(self, msg_parts, flags=0, copy=True, track=False):
          msg_parts = list(map(zmq.Message, msg_parts))
          self.queue.put_nowait(msg_parts)
          self.message_sent += 1
  
  SocketABC.register(DummySocket)
  
subject: Fix kernel.inprocess tests