com IF has abstract classes now

comIF/OBSW_ComInterface.py

 # -*- coding: utf-8 -*-
 """
-Program: OBSW_UnitTest.py
+Program: OBSW_ComInterface.py
 Date: 01.11.2019
-Description: Generic Communication Interface. Defines the syntax of the communication functions
+Description: Generic Communication Interface. Defines the syntax of the communication functions.
+             Abstract methods must be implemented by child class (e.g. Ethernet Com IF)
 
 @author: R. Mueller
 """
+from abc import abstractmethod
 
 
 class CommunicationInterface:
     def __init__(self):
         pass
 
+    @abstractmethod
     def sendTelecommand(self, tcPacket, tcPacketInfo=""):
         pass
 
+    @abstractmethod
     def performListenerMode(self):
         pass
 
+    @abstractmethod
     def receiveTelemetry(self):
         pass
 
     def receiveTelemetryDeserializeAndStore(self, tmQueue):
         pass
 
+    @abstractmethod
     def receiveTelemetryAndStoreTuple(self, tmTupleQueue):
         pass
 
+    @abstractmethod
     def pollInterface(self, parameter):
         pass