def test_process_service_0x11_with_hard_reset(self):
request = bytes([ECU_RESET_SID]) + bytes([ECU_RESET_HARD])
response = services.process_service_request(request)
expected_response = get_response_sid(ECU_RESET_SID) + bytes(
[ECU_RESET_HARD])
self.assertIsNotNone(response)
self.assertEqual(2, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x11_with_unsupported_reset_type_returns_negative_response(
self):
request = bytes([ECU_RESET_SID]) + bytes([0x06])
response = services.process_service_request(request)
expected_response = bytes([NEGATIVE_RESPONSE_ID]) + bytes(
[ECU_RESET_SID]) + bytes([NRC_SUB_FUNCTION_NOT_SUPPORTED])
self.assertIsNotNone(response)
self.assertEqual(3, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x19_with_invalid_message_length_returns_negative_response(
self):
expected_response = bytes([NEGATIVE_RESPONSE_ID]) + bytes([
READ_DTC_INFO_SID
]) + bytes([NRC_INCORRECT_MESSAGE_LENGTH_OR_INVALID_FORMAT])
request = bytes([READ_DTC_INFO_SID])
response = services.process_service_request(request)
self.assertIsNotNone(response)
self.assertEqual(3, len(response))
self.assertEqual(expected_response.hex(), response.hex())
request = bytes([READ_DTC_INFO_SID]) + bytes(
[READ_DTC_INFO_BY_STATUS_MASK]) + bytes([0x01])
response = services.process_service_request(request)
self.assertIsNotNone(response)
self.assertEqual(3, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x19_with_unsupported_sub_function_returns_negative_response(
self):
request = bytes([READ_DTC_INFO_SID]) + bytes([0x03])
response = services.process_service_request(request)
expected_response = bytes([NEGATIVE_RESPONSE_ID]) + bytes(
[READ_DTC_INFO_SID]) + bytes([NRC_SUB_FUNCTION_NOT_SUPPORTED])
self.assertIsNotNone(response)
self.assertEqual(3, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x11_with_enable_power_shut_down(self):
request = bytes([ECU_RESET_SID]) + bytes(
[ECU_RESET_ENABLE_RAPID_POWER_DOWN])
response = services.process_service_request(request)
expected_response = get_response_sid(ECU_RESET_SID) + bytes([
ECU_RESET_ENABLE_RAPID_POWER_DOWN
]) + bytes([ECU_RESET_POWER_DOWN_TIME])
self.assertIsNotNone(response)
self.assertEqual(3, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x10_with_invalid_message_length_returns_negative_response(
self):
request = bytes([DIAGNOSTIC_SESSION_CONTROL_SID])
response = services.process_service_request(request)
expected_response = bytes([NEGATIVE_RESPONSE_ID]) + bytes([
DIAGNOSTIC_SESSION_CONTROL_SID
]) + bytes([NRC_INCORRECT_MESSAGE_LENGTH_OR_INVALID_FORMAT])
self.assertIsNotNone(response)
self.assertEqual(3, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x10_with_unsupported_session_type_returns_negative_response(
self):
request = bytes([DIAGNOSTIC_SESSION_CONTROL_SID]) + bytes(
[DIAGNOSTIC_SESSION_INVALID_TYPE])
response = services.process_service_request(request)
expected_response = bytes([NEGATIVE_RESPONSE_ID]) + bytes([
DIAGNOSTIC_SESSION_CONTROL_SID
]) + bytes([NRC_SUB_FUNCTION_NOT_SUPPORTED])
self.assertIsNotNone(response)
self.assertEqual(3, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x10(self):
request = bytes([DIAGNOSTIC_SESSION_CONTROL_SID]) + bytes(
[DIAGNOSTIC_SESSION_TYPES[0]])
response = services.process_service_request(request)
expected_response = get_response_sid(
DIAGNOSTIC_SESSION_CONTROL_SID) + bytes([
DIAGNOSTIC_SESSION_TYPES[0]
]) + bytes(DIAGNOSTIC_SESSION_PARAMETER_RECORD)
self.assertIsNotNone(response)
self.assertEqual(6, len(response))
self.assertEqual(expected_response.hex(), response.hex())
def test_process_service_0x19(self):
request = bytes([READ_DTC_INFO_SID]) + bytes(
[READ_DTC_INFO_BY_STATUS_MASK])
response = services.process_service_request(request)
dtcs = dtc_utils.encode_uds_dtcs(ecu_config.get_dtcs())
expected_response = get_response_sid(READ_DTC_INFO_SID) + bytes([
READ_DTC_INFO_BY_STATUS_MASK
]) + bytes([READ_DTC_STATUS_AVAILABILITY_MASK]) + dtcs
self.assertIsNotNone(response)
self.assertEqual(3 + len(dtcs), len(response))
self.assertEqual(expected_response.hex(), response.hex())
def start():
isotp_socket = create_isotp_socket(UDS_ECU_ADDRESS, UDS_TARGET_ADDRESS)
while True:
request = isotp_socket.recv()
if request is not None:
log_request(request)
if len(request) >= 1:
response = services.process_service_request(request)
if response is not None:
log_response(response)
isotp_socket.send(response)