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#!/usr/bin/env python
# coding: utf-8
"""
"""
from __future__ import absolute_import, print_function
from time import sleep
import unittest
import random
import logging
import tempfile
import sqlite3
import os
from os.path import join, dirname
import can
from .data.example_data import generate_message
channel = 'virtual_channel_0'
can.rc['interface'] = 'virtual'
logging.basicConfig(level=logging.DEBUG)
# makes the random number generator deterministic
random.seed(13339115)
class ListenerImportTest(unittest.TestCase):
def testClassesImportable(self):
self.assertTrue(hasattr(can, 'Listener'))
self.assertTrue(hasattr(can, 'BufferedReader'))
self.assertTrue(hasattr(can, 'Notifier'))
self.assertTrue(hasattr(can, 'Logger'))
self.assertTrue(hasattr(can, 'ASCWriter'))
self.assertTrue(hasattr(can, 'ASCReader'))
self.assertTrue(hasattr(can, 'BLFReader'))
self.assertTrue(hasattr(can, 'BLFWriter'))
self.assertTrue(hasattr(can, 'CSVReader'))
self.assertTrue(hasattr(can, 'CSVWriter'))
self.assertTrue(hasattr(can, 'CanutilsLogWriter'))
self.assertTrue(hasattr(can, 'CanutilsLogReader'))
self.assertTrue(hasattr(can, 'SqliteReader'))
self.assertTrue(hasattr(can, 'SqliteWriter'))
self.assertTrue(hasattr(can, 'Printer'))
self.assertTrue(hasattr(can, 'LogReader'))
self.assertTrue(hasattr(can, 'MessageSync'))
class BusTest(unittest.TestCase):
def setUp(self):
self.bus = can.interface.Bus()
def tearDown(self):
self.bus.shutdown()
class ListenerTest(BusTest):
def testBasicListenerCanBeAddedToNotifier(self):
a_listener = can.Printer()
notifier = can.Notifier(self.bus, [a_listener], 0.1)
notifier.stop()
self.assertIn(a_listener, notifier.listeners)
def testAddListenerToNotifier(self):
a_listener = can.Printer()
notifier = can.Notifier(self.bus, [], 0.1)
notifier.stop()
self.assertNotIn(a_listener, notifier.listeners)
notifier.add_listener(a_listener)
self.assertIn(a_listener, notifier.listeners)
def testRemoveListenerFromNotifier(self):
a_listener = can.Printer()
notifier = can.Notifier(self.bus, [a_listener], 0.1)
notifier.stop()
self.assertIn(a_listener, notifier.listeners)
notifier.remove_listener(a_listener)
self.assertNotIn(a_listener, notifier.listeners)
def testPlayerTypeResolution(self):
def test_filetype_to_instance(extension, klass):
print("testing: {}".format(extension))
try:
if extension == ".blf":
delete = False
file_handler = open(join(dirname(__file__), "data/logfile.blf"))
else:
delete = True
file_handler = tempfile.NamedTemporaryFile(suffix=extension, delete=False)
with file_handler as my_file:
filename = my_file.name
with can.LogReader(filename) as reader:
self.assertIsInstance(reader, klass)
finally:
if delete:
os.remove(filename)
test_filetype_to_instance(".asc", can.ASCReader)
test_filetype_to_instance(".blf", can.BLFReader)
test_filetype_to_instance(".csv", can.CSVReader)
test_filetype_to_instance(".db" , can.SqliteReader)
test_filetype_to_instance(".log", can.CanutilsLogReader)
# test file extensions that are not supported
with self.assertRaisesRegexp(NotImplementedError, ".xyz_42"):
test_filetype_to_instance(".xyz_42", can.Printer)
def testLoggerTypeResolution(self):
def test_filetype_to_instance(extension, klass):
print("testing: {}".format(extension))
try:
with tempfile.NamedTemporaryFile(suffix=extension, delete=False) as my_file:
filename = my_file.name
with can.Logger(filename) as writer:
self.assertIsInstance(writer, klass)
finally:
os.remove(filename)
test_filetype_to_instance(".asc", can.ASCWriter)
test_filetype_to_instance(".blf", can.BLFWriter)
test_filetype_to_instance(".csv", can.CSVWriter)
test_filetype_to_instance(".db" , can.SqliteWriter)
test_filetype_to_instance(".log", can.CanutilsLogWriter)
test_filetype_to_instance(".txt", can.Printer)
# test file extensions that should use a fallback
test_filetype_to_instance("", can.Printer)
test_filetype_to_instance(".", can.Printer)
test_filetype_to_instance(".some_unknown_extention_42", can.Printer)
with can.Logger(None) as logger:
self.assertIsInstance(logger, can.Printer)
def testBufferedListenerReceives(self):
a_listener = can.BufferedReader()
a_listener(generate_message(0xDADADA))
a_listener(generate_message(0xDADADA))
self.assertIsNotNone(a_listener.get_message(0.1))
a_listener.stop()
self.assertIsNotNone(a_listener.get_message(0.1))
if __name__ == '__main__':
unittest.main()
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