def test_process_invalid_service_request_returns_none(self):
self.assertIsNone(services.process_service_request(requested_sid=INVALID_SID, requested_pid=0x00))
self.assertIsNone(services.process_service_request(requested_sid=0x01, requested_pid=INVALID_PID))
self.assertIsNone(services.process_service_request(requested_sid=INVALID_SID, requested_pid=INVALID_PID))
self.assertIsNone(services.process_service_request(requested_sid=STRING_SID, requested_pid=0x00))
self.assertIsNone(services.process_service_request(requested_sid=0x01, requested_pid=STRING_PID))
self.assertIsNone(services.process_service_request(requested_sid=STRING_SID, requested_pid=STRING_PID))
def start():
request_socket = create_isotp_socket(OBD_BROADCAST_ADDRESS,
OBD_TARGET_ADDRESS)
response_socket = create_isotp_socket(OBD_ECU_ADDRESS, OBD_TARGET_ADDRESS)
while True:
request = request_socket.recv()
requested_pid, requested_sid = get_sid_and_pid(request)
if requested_sid is not None:
log_request(request)
response = services.process_service_request(
requested_sid, requested_pid)
if response is not None:
log_response(response)
response_socket.send(response)
def test_process_service_unknown_pid_returns_none(self):
self.assertIsNone(services.process_service_request(requested_sid=0x01, requested_pid=UNSUPPORTED_PID))
def test_process_unsupported_service_returns_none(self):
self.assertIsNone(services.process_service_request(requested_sid=UNSUPPORTED_SID, requested_pid=0x00))
self.assertIsNone(services.process_service_request(requested_sid=UNSUPPORTED_SID, requested_pid=None))
def test_process_service_0x03_returns_DTCs(self):
response = services.process_service_request(requested_sid=0x03, requested_pid=None)
self.assertIsNotNone(response)
def test_process_service_0x09_pid_0x00(self):
response = services.process_service_request(requested_sid=0x09, requested_pid=0x00)
self.assertIsNotNone(response)
self.assertEqual("490040400001", response.hex())
def test_process_service_0x01_pid_0xE0_returns_no_pids(self):
response = services.process_service_request(requested_sid=0x01, requested_pid=0xE0)
self.assertIsNotNone(response)
self.assertEqual("41e000000000", response.hex())
def test_process_service_0x01_pid_0x40(self):
response = services.process_service_request(requested_sid=0x01, requested_pid=0x40)
self.assertIsNotNone(response)
self.assertEqual("414000008001", response.hex())