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test_diagnostics_database.py
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test_diagnostics_database.py
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import os
import unittest
import logging
import cantools
class CanToolsDiagnosticsDatabaseTest(unittest.TestCase):
maxDiff = None
def test_example_cdd(self):
db = cantools.db.load_file('tests/files/cdd/example.cdd',
encoding='iso-8859-1')
self.assertEqual(len(db.dids), 15)
self.assertEqual([did.name for did in db.dids],
[
'DEFAULT_SESSION',
'ProgrammingSession',
'ECU_Identification',
'Development_Data',
'Serial_Number',
'REQUEST_SEED_SERVICE',
'SUBMIT_KEY_SERVICE',
'A_D_Werte',
'SawTooth',
'Sine',
'FaultMemory_identified',
'FaultMemory_supported',
'TestData',
'Coding',
'InputOutput'
])
# ECU_Identification DID structure.
did = db.get_did_by_name('ECU_Identification')
self.assertEqual(did.name, 'ECU_Identification')
self.assertEqual(did.identifier, 144)
self.assertEqual(did.length, 10)
self.assertEqual([data.name for data in did.datas],
[
'Ident_Number_7_6',
'Ident_Number_5_4',
'Ident_Number_3_2',
'Ident_Number_1_0',
'Diagnostic_Identification'
])
data = did.get_data_by_name('Diagnostic_Identification')
self.assertEqual(data.name, 'Diagnostic_Identification')
self.assertEqual(data.start, 64)
self.assertEqual(data.length, 16)
self.assertEqual(data.byte_order, 'little_endian')
self.assertEqual(data.scale, 1)
self.assertEqual(data.offset, 0)
self.assertEqual(data.minimum, 0)
self.assertEqual(data.maximum, 255)
self.assertEqual(data.unit, None)
self.assertEqual(data.choices, None)
decoded_did = {
'Ident_Number_7_6': 0x1234,
'Ident_Number_5_4': 0x5678,
'Ident_Number_3_2': 0x9012,
'Ident_Number_1_0': 0x3456,
'Diagnostic_Identification': 0xabcd
}
encoded_did = b'\x34\x12\x78\x56\x12\x90\x56\x34\xcd\xab'
encoded = did.encode(decoded_did)
self.assertEqual(encoded, encoded_did)
decoded = did.decode(encoded)
self.assertEqual(decoded, decoded_did)
# SawTooth DID structure.
did = db.get_did_by_identifier(244)
self.assertEqual(did.identifier, 244)
decoded_did = {
'ampl': 1,
'period': 40,
'value': 3
}
encoded_did = b'\x01\x02\x03'
encoded = did.encode(decoded_did)
self.assertEqual(encoded, encoded_did)
decoded = did.decode(encoded)
self.assertEqual(decoded, decoded_did)
# Sine DID structure.
did = db.get_did_by_name('Sine')
self.assertEqual(len(did.datas), 3)
self.assertEqual([data.name for data in did.datas],
[
'ampl',
'period',
'value'
])
self.assertEqual(did.identifier, 243)
self.assertEqual(did.datas[1].name, 'period')
self.assertEqual(did.datas[1].unit, 'sec')
self.assertEqual(did.datas[1].scale, 20)
self.assertEqual(did.datas[1].offset, 0)
decoded_did = {
'ampl': 1,
'period': 40,
'value': 3
}
encoded_did = b'\x01\x02\x03'
encoded = did.encode(decoded_did)
self.assertEqual(encoded, encoded_did)
decoded = did.decode(encoded)
self.assertEqual(decoded, decoded_did)
# Coding DID structure.
did = db.get_did_by_name('Coding')
self.assertEqual(len(did.datas), 3)
self.assertEqual([data.name for data in did.datas],
[
'Country_variant',
'Vehicle_type',
'Special_setting'
])
self.assertEqual(did.identifier, 160)
self.assertEqual(did.datas[1].name, 'Vehicle_type')
self.assertEqual(did.datas[1].choices,
{
0: '(not defined)',
1: 'Coupe',
2: 'Sedan',
3: 'Transporter'
})
self.assertEqual(did.datas[2].name, 'Special_setting')
self.assertEqual(did.datas[2].choices, None)
decoded_did = {
'Country_variant': 'Europe',
'Vehicle_type': 'Sedan',
'Special_setting': 3
}
encoded_did = b'\x21\x03'
encoded = did.encode(decoded_did)
self.assertEqual(encoded, encoded_did)
decoded = did.decode(encoded)
self.assertEqual(decoded, decoded_did)
def test_example_cdd_repr(self):
db = cantools.db.load_file('tests/files/cdd/example.cdd',
encoding='iso-8859-1')
self.assertEqual(
repr(db),
"did('DEFAULT_SESSION', 0x0081)\n"
"\n"
"did('ProgrammingSession', 0x0085)\n"
"\n"
"did('ECU_Identification', 0x0090)\n"
" data('Ident_Number_7_6', 0, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('Ident_Number_5_4', 16, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('Ident_Number_3_2', 32, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('Ident_Number_1_0', 48, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('Diagnostic_Identification', 64, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
"\n"
"did('Development_Data', 0x0091)\n"
" data('Operating_System_Version', 0, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('CAN_Driver_Version', 16, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('NM_Version', 32, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('Diagnostic_Module_Version', 48, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('Transport_Layer_Version', 64, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
"\n"
"did('Serial_Number', 0x0092)\n"
" data('Serial_Number', 0, 32, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
"\n"
"did('REQUEST_SEED_SERVICE', 0x0001)\n"
" data('SEED', 0, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
"\n"
"did('SUBMIT_KEY_SERVICE', 0x0002)\n"
" data('KEY', 0, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
"\n"
"did('A_D_Werte', 0x0040)\n"
" data('Voltage', 0, 8, 'little_endian', 0.1, 0.0, 0, 255, 'V', None)\n"
" data('Current', 8, 8, 'little_endian', 0.1, 0.0, 0, 255, 'A', None)\n"
" data('Resistance', 16, 16, 'little_endian', 10.0, 0.0, 0, 255, 'Ohm', None)\n"
"\n"
"did('SawTooth', 0x00f4)\n"
" data('ampl', 0, 8, 'little_endian', 1.0, 0.0, 0, 255, 'None', None)\n"
" data('period', 8, 8, 'little_endian', 20.0, 0.0, 0, 255, 'sec', None)\n"
" data('value', 16, 8, 'little_endian', 1.0, 0.0, 0, 255, 'None', None)\n"
"\n"
"did('Sine', 0x00f3)\n"
" data('ampl', 0, 8, 'little_endian', 1.0, 0.0, 0, 255, 'None', None)\n"
" data('period', 8, 8, 'little_endian', 20.0, 0.0, 0, 255, 'sec', None)\n"
" data('value', 16, 8, 'little_endian', 1.0, 0.0, 0, 255, 'None', None)\n"
"\n"
"did('FaultMemory_identified', 0x00f2)\n"
" data('Number', 0, 8, 'little_endian', 1.0, 0.0, 0, 255, 'None', None)\n"
" data('DTC_1', 8, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_1', 24, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_2', 32, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_2', 48, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_3', 56, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_3', 72, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_4', 80, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_4', 96, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_5', 104, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_5', 120, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_6', 128, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_6', 144, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
"\n"
"did('FaultMemory_supported', 0x00f1)\n"
" data('Number', 0, 8, 'little_endian', 1.0, 0.0, 0, 255, 'None', None)\n"
" data('DTC_1', 8, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_1', 24, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_2', 32, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_2', 48, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_3', 56, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_3', 72, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_4', 80, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_4', 96, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_5', 104, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_5', 120, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('DTC_6', 128, 16, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
" data('StatusOfDTC_6', 144, 8, 'little_endian', 1, 0, 0, 255, 'None', None)\n"
"\n"
"did('TestData', 0x0041)\n"
" data('DATA_0', 0, 8, 'little_endian', 1, 0, 1, 1, 'None', None)\n"
" data('DATA_1', 8, 8, 'little_endian', 1, 0, 1, 1, 'None', None)\n"
"\n"
"did('Coding', 0x00a0)\n"
" data('Country_variant', 0, 4, 'little_endian', 1, 0, 1, 1, 'None', {0: '(not defined)', 1: 'Europe', 2: 'USA', 3: 'Japan', 4: '(others)'})\n"
" data('Vehicle_type', 4, 4, 'little_endian', 1, 0, 1, 1, 'None', {0: '(not defined)', 1: 'Coupe', 2: 'Sedan', 3: 'Transporter'})\n"
" data('Special_setting', 8, 8, 'little_endian', 1, 0, 1, 1, 'None', None)\n"
"\n"
"did('InputOutput', 0x0080)\n"
" data('Door_contact_front_left', 0, 1, 'little_endian', 1, 0, 1, 1, 'None', {0: 'closed', 1: 'open'})\n"
" data('Door_contact_front_right', 1, 1, 'little_endian', 1, 0, 1, 1, 'None', {0: 'closed', 1: 'open'})\n"
" data('Door_contact_rear_left', 2, 1, 'little_endian', 1, 0, 1, 1, 'None', {0: 'closed', 1: 'open'})\n"
" data('Door_contact_rear_right', 3, 1, 'little_endian', 1, 0, 1, 1, 'None', {0: 'closed', 1: 'open'})\n"
" data('_reserved', 4, 4, 'little_endian', 1, 0, 0, 255, 'None', None)\n")
def test_cdd_add(self):
db = cantools.db.diagnostics.Database()
db.add_cdd_file('tests/files/cdd/example.cdd', encoding='iso-8859-1')
self.assertEqual(len(db.dids), 15)
# This file is not '__main__' when executed via 'python setup.py3
# test'.
logging.basicConfig(level=logging.DEBUG)
if __name__ == '__main__':
unittest.main()