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listener_test.py
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161 lines (126 loc) · 5.36 KB
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#!/usr/bin/env python
# coding: utf-8
"""
"""
import unittest
import random
import logging
import tempfile
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", "test_CanMessage.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)
def testPlayerTypeResolutionUnsupportedFileTypes(self):
for should_fail_with in ["", ".", ".some_unknown_extention_42"]:
with self.assertRaises(ValueError):
with can.LogReader(should_fail_with): # make sure we close it anyways
pass
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)
with can.Logger(None) as logger:
self.assertIsInstance(logger, can.Printer)
def testLoggerTypeResolutionUnsupportedFileTypes(self):
for should_fail_with in ["", ".", ".some_unknown_extention_42"]:
with self.assertRaises(ValueError):
with can.Logger(should_fail_with): # make sure we close it anyways
pass
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()