Dev 0.11 (#181)

* Sonar qube 6 (#174)

* test class ModbusConn

* Sonar qube 3 (#178)

* add more unit tests

* GEN3: don't crash on overwritten msg in the receive buffer

* improve test coverage und reduce test delays

* reduce cognitive complexity

app/src/gen3/connection_g3.py

@@ -25,10 +25,10 @@ class ConnectionG3(AsyncStream, Talent):
         # logger.info(f'AsyncStream refs: {gc.get_referrers(self)}')
 
     async def async_create_remote(self) -> None:
-        pass  # virtual interface
+        pass  # virtual interface # pragma: no cover
 
     async def async_publ_mqtt(self) -> None:
-        pass  # virtual interface
+        pass  # virtual interface # pragma: no cover
 
     def healthy(self) -> bool:
         logger.debug('ConnectionG3 healthy()')

app/src/gen3/talent.py

@@ -294,6 +294,13 @@ class Talent(Message):
         result = struct.unpack_from('!lB', buf, 0)
         msg_len = result[0]    # len of complete message
         id_len = result[1]    # len of variable id string
+        if id_len > 17:
+            logger.warning(f'len of ID string must == 16 but is {id_len}')
+            self.inc_counter('Invalid_Msg_Format')
+
+            # erase broken recv buffer
+            self._recv_buffer = bytearray()
+            return
 
         hdr_len = 5+id_len+2