add more unittests for solarman_v5.py

app/src/gen3plus/solarman_v5.py

@@ -186,12 +186,12 @@ class SolarmanV5(Message):
             type += 'S'
         return switch.get(type, '???')
 
-    def _timestamp(self):   # pragma: no cover
+    def _timestamp(self):
         # utc as epoche
-        return int(time.time())
+        return int(time.time())    # pragma: no cover
 
     def _heartbeat(self) -> int:
-        return 60
+        return 60                  # pragma: no cover
 
     def __parse_header(self, buf: bytes, buf_len: int) -> None:
 

app/src/messages.py

@@ -76,7 +76,7 @@ class Message(metaclass=IterRegistry):
 
     def _update_header(self, _forward_buffer):
         '''callback for updating the header of the forward buffer'''
-        return
+        return  # pragma: no cover
 
     '''
     Our puplic methods