Implement CanProtocol for CantactBus

Author: lumagi

can/interfaces/cantact.py

@@ -2,12 +2,12 @@
 Interface for CANtact devices from Linklayer Labs
 """
 
-import time
 import logging
+import time
 from typing import Optional, Union, Any
 from unittest.mock import Mock
 
-from can import BusABC, Message, BitTiming, BitTimingFd
+from can import BusABC, Message, BitTiming, BitTimingFd, CanProtocol
 from ..exceptions import (
     CanInitializationError,
     CanInterfaceNotImplementedError,
@@ -113,7 +113,11 @@ def __init__(
             self.interface.start()
 
         super().__init__(
-            channel=channel, bitrate=bitrate, poll_interval=poll_interval, **kwargs
+            channel=channel,
+            bitrate=bitrate,
+            poll_interval=poll_interval,
+            protocol=CanProtocol.CAN_20,
+            **kwargs,
         )
 
     def _recv_internal(self, timeout):

test/test_cantact.py

@@ -14,6 +14,8 @@ class CantactTest(unittest.TestCase):
     def test_bus_creation(self):
         bus = can.Bus(channel=0, interface="cantact", _testing=True)
         self.assertIsInstance(bus, cantact.CantactBus)
+        self.assertEqual(bus.protocol, can.CanProtocol.CAN_20)
+
         cantact.MockInterface.set_bitrate.assert_called()
         cantact.MockInterface.set_bit_timing.assert_not_called()
         cantact.MockInterface.set_enabled.assert_called()
@@ -25,7 +27,10 @@ def test_bus_creation_bittiming(self):
 
         bt = can.BitTiming(f_clock=24_000_000, brp=3, tseg1=13, tseg2=2, sjw=1)
         bus = can.Bus(channel=0, interface="cantact", timing=bt, _testing=True)
+
         self.assertIsInstance(bus, cantact.CantactBus)
+        self.assertEqual(bus, can.CanProtocol.CAN_20)
+
         cantact.MockInterface.set_bitrate.assert_not_called()
         cantact.MockInterface.set_bit_timing.assert_called()
         cantact.MockInterface.set_enabled.assert_called()