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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for `canmatrix` package."""
import os
import unittest
import tempfile
from canmatrix import formats
from canmatrix.canmatrix import Signal, ArbitrationId
class TestCanmatrixCodec(unittest.TestCase):
"""Tests for `canmatrix` package."""
def setUp(self):
"""Set up test fixtures, if any."""
def tearDown(self):
"""Tear down test fixtures, if any."""
# def test_bitstruct_format(self):
# """"""
# s1 = Signal('signal')
# self.assertEqual(s1.bitstruct_format(), '<s0')
# s2 = Signal('signal', size=8)
# self.assertEqual(s2.bitstruct_format(), '<s8')
# s3 = Signal('signal', size=8, is_signed=False)
# self.assertEqual(s3.bitstruct_format(), '<u8')
# s4 = Signal('signal', size=8, is_little_endian=False)
# self.assertEqual(s4.bitstruct_format(), '>s8')
def test_encode_by_signal_raw_value(self):
test_file = "tests/files/dbc/test.dbc"
for bus in formats.loadp(test_file).values():
test_frame1 = ArbitrationId(0x123)
data = {
'Signal': 2,
'someTestSignal': 101,
}
data_bytes = tuple(bytearray(bus.encode(test_frame1, data)))
assert data_bytes == (0, 0xCA, 0x20, 0, 0, 0, 0, 0)
def test_encode_by_signal_physical_value(self):
test_file = "tests/files/dbc/test.dbc"
for bus in formats.loadp(test_file).values():
test_frame1 = ArbitrationId(0x123)
data = {
'someTestSignal': "101",
'Signal': u'two'
}
data_bytes = tuple(bytearray(bus.encode(test_frame1, data)))
assert data_bytes == (0, 0x28, 0x20, 0, 0, 0, 0, 0)
def test_encode_decode_signal_value(self):
test_file = "tests/files/dbc/test.dbc"
for bus in formats.loadp(test_file).values():
test_frame1 = ArbitrationId(0x123)
data = {
'Signal': 2,
'someTestSignal': 101,
}
data_bytes = tuple(bytearray(bus.encode(test_frame1, data)))
decoded = bus.decode(test_frame1, data_bytes)
for k, v in data.items():
assert decoded[k].raw_value == v
def test_encode_decode_signal_value_choice_unicode(self):
test_file = "tests/files/dbc/test.dbc"
for bus in formats.loadp(test_file).values():
test_frame1 = ArbitrationId(0x123)
data = {
'Signal': u'two'
}
data_bytes = tuple(bytearray(bus.encode(test_frame1, data)))
decoded = bus.decode(test_frame1, data_bytes)
for k, v in data.items():
assert decoded[k].signal.values[decoded[k].raw_value] == v
def test_encode_decode_signal_value_choice_str(self):
test_file = "tests/files/dbc/test.dbc"
for bus in formats.loadp(test_file).values():
test_frame1 = ArbitrationId(0x123)
data = {
'Signal': 'two'
}
data_bytes = tuple(bytearray(bus.encode(test_frame1, data)))
decoded = bus.decode(test_frame1, data_bytes)
for k, v in data.items():
assert decoded[k].signal.values[decoded[k].raw_value] == v
def test_import_export_additional_frame_info(self):
test_file = "tests/files/dbc/test.dbc"
dbs = formats.loadp(test_file)
tmp_dir = tempfile.mkdtemp()
# for extension in ['csv', 'json']: # json will not export None type
for extension in ['csv']:
out_file_name = tmp_dir + "/output." + extension
formats.dumpp(dbs, out_file_name, additionalFrameAttributes="UserFrameAttr")
with open(out_file_name, "r") as file:
data = file.read()
self.assertIn("UserFrameAttr", data)
if __name__ == "__main__":
unittest.main()
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