22         can.Message(arbitration_id=0x10,
27         can.Message(arbitration_id=0x20,
33         can.Message(arbitration_id=0x30,
39         can.Message(arbitration_id=0x40,
46         can.Message(arbitration_id=0x50,
59     def check_rx(tx: can.Message, rx: can.Message) -> None:  argument
60         """Check if received message matches transmitted message."""
65             pytest.fail('no message received')
69             pytest.fail(f'rx message "{rx}" not equal to tx message "{tx}"')
72     def skip_if_unsupported(can_dut: BusABC, can_host: BusABC, msg: can.Message) -> None:  argument
73         """Skip test if message format is not supported by both DUT and host."""
80     def test_dut_to_host(self, can_dut: BusABC, can_host: BusABC, msg: can.Message) -> None:  argument
88     def test_host_to_dut(self, can_dut: BusABC, can_host: BusABC, msg: can.Message) -> None:  argument