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test_canframedefinition.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
test_canframedefinition
----------------------------------
Tests for `canframe_definition` module.
"""
import sys
import unittest
assert sys.version_info >= (3, 3, 0), "Python version 3.3 or later required!"
from can4python import exceptions
from can4python import cansignal
from can4python import canframe_definition
class TestCanFrameDefinition(unittest.TestCase):
def setUp(self):
self.frame_def = canframe_definition.CanFrameDefinition(1, 'testframedef')
self.frame_def.producer_ids = set(["9"])
sig1 = cansignal.CanSignalDefinition('testsignal', 56, 1) # Least significant bit in last byte
self.frame_def.signaldefinitions.append(sig1)
def testConstructor(self):
fr_def = canframe_definition.CanFrameDefinition(1, 'testframedef', 3)
self.assertEqual(fr_def.frame_id, 1)
self.assertEqual(fr_def.dlc, 3)
self.assertEqual(fr_def.name, 'testframedef')
self.assertEqual(fr_def.cycletime, None)
self.assertEqual(fr_def.frame_format, 'standard')
def testConstructorCycletime(self):
fr_def = canframe_definition.CanFrameDefinition(1, 'testframedef', 3, 28)
self.assertEqual(fr_def.frame_id, 1)
self.assertEqual(fr_def.dlc, 3)
self.assertEqual(fr_def.name, 'testframedef')
self.assertEqual(fr_def.cycletime, 28)
self.assertEqual(fr_def.frame_format, 'standard')
def testConstructorCycletimeNone(self):
fr_def = canframe_definition.CanFrameDefinition(0x1FFFFFFF, 'testframedef', 3, None, frame_format='extended')
self.assertEqual(fr_def.frame_id, 0x1FFFFFFF)
self.assertEqual(fr_def.dlc, 3)
self.assertEqual(fr_def.name, 'testframedef')
self.assertEqual(fr_def.cycletime, None)
self.assertEqual(fr_def.frame_format, 'extended')
def testConstructorNamedArguments(self):
fr_def = canframe_definition.CanFrameDefinition(frame_id=1, name='testframedef', dlc=3, cycletime=28)
self.assertEqual(fr_def.frame_id, 1)
self.assertEqual(fr_def.dlc, 3)
self.assertEqual(fr_def.name, 'testframedef')
self.assertEqual(fr_def.cycletime, 28)
self.assertEqual(fr_def.frame_format, 'standard')
def testConstructorWrongValues(self):
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, -1, 'testframedef')
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, "1,0", 'testframedef')
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, None, 'testframedef')
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 0x800, 'testframedef',
8, 50, 'standard')
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 0x20000000, 'testframedef',
8, 50, 'extended')
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', -1)
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', 9)
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', "8,0")
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', None)
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', 8, -3)
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', 8, "8,0")
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', 8, 50, 'ABC')
self.assertRaises(exceptions.CanException, canframe_definition.CanFrameDefinition, 1, 'testframedef', 8, 50, 1)
def testProperties(self):
self.assertEqual(self.frame_def.frame_id, 1)
self.assertEqual(self.frame_def.name, 'testframedef')
self.assertEqual(self.frame_def.dlc, 8)
self.assertEqual(self.frame_def.cycletime, None)
self.assertEqual(self.frame_def.throttle_time, None)
self.assertEqual(self.frame_def.frame_format, 'standard')
self.assertEqual(self.frame_def.receive_on_change_only, False)
self.assertEqual(self.frame_def.producer_ids, set(["9"]))
self.frame_def.frame_id = 2
self.frame_def.name = 'testframedef2'
self.frame_def.dlc = 4
self.frame_def.cycletime = 29
self.frame_def.throttle_time = 155
self.frame_def.frame_format = 'extended'
self.frame_def.receive_on_change_only = True
self.frame_def.producer_ids = ["9", "1", "1"]
self.assertEqual(self.frame_def.frame_id, 2)
self.assertEqual(self.frame_def.name, 'testframedef2')
self.assertEqual(self.frame_def.dlc, 4)
self.assertEqual(self.frame_def.cycletime, 29)
self.assertEqual(self.frame_def.throttle_time, 155)
self.assertEqual(self.frame_def.frame_format, 'extended')
self.assertEqual(self.frame_def.receive_on_change_only, True)
self.assertEqual(self.frame_def.producer_ids, set(["1", "9"]))
self.frame_def.producer_ids = None
self.assertEqual(self.frame_def.producer_ids, set())
def testPropertiesWrongValues(self):
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_id', -1)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_id', 0x800)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_id', "1,0")
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_id', None)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'dlc', -1)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'dlc', 9)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'dlc', "1,0")
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_id', None)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'cycletime', -1)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'cycletime', "1,0")
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'cycletime', 60001)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'throttle_time', -1)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'throttle_time', "1,0")
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'throttle_time', 60001)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_format', 'ABC')
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_format', None)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'frame_format', 1)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'producer_ids', 3)
self.assertRaises(exceptions.CanException, setattr, self.frame_def, 'producer_ids', "3")
def testIsOutbound(self):
self.assertTrue(self.frame_def.is_outbound(["9"]))
self.assertFalse(self.frame_def.is_outbound(["99"]))
self.assertFalse(self.frame_def.is_outbound([9]))
def testIsOutboundWrongType(self):
self.assertRaises(exceptions.CanException, self.frame_def.is_outbound, 9)
def testGetSignalMask(self):
testsig2 = cansignal.CanSignalDefinition('testsignal2', 8, 16, endianness='big') # Two leftmost bytes
testsig3 = cansignal.CanSignalDefinition('testsignal3', 24, 16, endianness='little',
maxvalue=1200) # Two center bytes
testsig4 = cansignal.CanSignalDefinition('testsignal4', 48, 8, signaltype='signed') # Second last byte
self.frame_def.signaldefinitions.append(testsig2)
self.frame_def.signaldefinitions.append(testsig3)
self.frame_def.signaldefinitions.append(testsig4)
self.assertEqual(self.frame_def.get_signal_mask(), b'\xff\xff\x00\xff\xff\x00\xff\x01')
def testRepr(self):
print("\n\n\nRepresentation:")
print(repr(self.frame_def))
print("Representation (short version):")
result = self.frame_def.__repr__(long_text=False)
print(result) # Check the output manually
known_result = "CAN frame definition. ID=1 (0x001, standard) 'testframedef', DLC=8, " + \
"cycletime None ms, producers: ['9'], no throttling, contains 1 signals"
self.assertEqual(result.strip(), known_result.strip())
def testReprThrottling(self):
fr_def = canframe_definition.CanFrameDefinition(123)
fr_def.throttle_time = 30 # ms
result = repr(fr_def)
known_result = "CAN frame definition. ID=123 (0x07B, standard) '', DLC=8, " + \
"cycletime None ms, producers: [], throttling 30 ms, contains 0 signals"
self.assertEqual(result.strip(), known_result.strip())
def testReprNoSignals(self):
fr_def = canframe_definition.CanFrameDefinition(1, 'testframedef')
result = repr(fr_def)
known_result = "CAN frame definition. ID=1 (0x001, standard) 'testframedef', DLC=8, " + \
"cycletime None ms, producers: [], no throttling, contains 0 signals"
self.assertEqual(result.strip(), known_result.strip())
def testGetDescriptiveAsciiArt(self):
result = self.frame_def.get_descriptive_ascii_art()
print('\n\n' + result) # Check the output manually
if __name__ == '__main__':
unittest.main(verbosity=2)