Allow manually setting the device to FAULT

RCUSCC/RCUSCC/RCUSCC.py

@@ -57,6 +57,8 @@ class RCUSCC(Device):
         * -> OFF:      Device is turned off. Triggered by the Off() command.
         FAULT -> INIT: Device is reinitialised to recover from an error. Triggered by the Init() command.
         OFF -> INIT:   Device is turned on again. Triggered by the Init() command.
+
+    For integration testing reasons, the user is allowed to manually set the device to FAULT.
     """
     client = 0
     name_space_index = 0
@@ -273,11 +275,11 @@ class RCUSCC(Device):
         self.client = opcua.Client("opc.tcp://{}:{}/".format(self.OPC_Server_Name, self.OPC_Server_Port), self.OPC_Time_Out) # timeout in seconds
 
         # Connect to OPC-UA -- will set ON state on success
-        self.opcua_connection = OPCUAConnection(self.client, self.On, self._Fault, self)
+        self.opcua_connection = OPCUAConnection(self.client, self.On, self.Fault, self)
 
         if not self.opcua_connection.connect():
             # hardware or infra is down -- needs fixing first
-            self._Fault()
+            self.Fault()
             return
 
         # Retrieve and map server attributes
@@ -285,7 +287,7 @@ class RCUSCC(Device):
             self._map_attributes()
         except Exception as e:
             self.error_stream("Could not map server interface: %s", e)
-            self._Fault()
+            self.Fault()
             return
 
         # Start keep-alive
@@ -472,8 +474,11 @@ class RCUSCC(Device):
         # Turn off again, in case of race conditions through reconnecting
         self.set_state(DevState.OFF)
 
-
-    def _Fault(self):
+    @command(
+    )
+    @only_in_states([DevState.ON, DevState.INIT])
+    @DebugIt()
+    def Fault(self):
         """
         FAULT state is used to indicate our connection with the OPC-UA server is down.