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#!/usr/bin/env python

"""

This module tests the functions inside of logger.py

"""

import gzip

import os

import sys

import unittest

from unittest import mock

from unittest.mock import Mock

import pytest

import can

import can.logger

from .config import *

class TestLoggerScriptModule(unittest.TestCase):

def setUp(self) -> None:

# Patch VirtualBus object

patcher_virtual_bus = mock.patch("can.interfaces.virtual.VirtualBus", spec=True)

self.MockVirtualBus = patcher_virtual_bus.start()

self.addCleanup(patcher_virtual_bus.stop)

self.mock_virtual_bus = self.MockVirtualBus.return_value

self.mock_virtual_bus.shutdown = Mock()

# Patch Logger object

patcher_logger = mock.patch("can.logger.Logger", spec=True)

self.MockLogger = patcher_logger.start()

self.addCleanup(patcher_logger.stop)

self.mock_logger = self.MockLogger.return_value

self.mock_logger.stop = Mock()

self.MockLoggerUse = self.MockLogger

self.loggerToUse = self.mock_logger

# Patch SizedRotatingLogger object

patcher_logger_sized = mock.patch("can.logger.SizedRotatingLogger", spec=True)

self.MockLoggerSized = patcher_logger_sized.start()

self.addCleanup(patcher_logger_sized.stop)

self.mock_logger_sized = self.MockLoggerSized.return_value

self.mock_logger_sized.stop = Mock()

self.testmsg = can.Message(

arbitration_id=0xC0FFEE, data=[0, 25, 0, 1, 3, 1, 4, 1], is_extended_id=True

)

self.baseargs = [sys.argv[0], "-i", "virtual"]

def assertSuccessfullCleanup(self):

self.MockVirtualBus.assert_called_once()

self.mock_virtual_bus.shutdown.assert_called_once()

self.MockLoggerUse.assert_called_once()

self.loggerToUse.stop.assert_called_once()

def test_log_virtual(self):

self.mock_virtual_bus.recv = Mock(side_effect=[self.testmsg, KeyboardInterrupt])

sys.argv = self.baseargs

can.logger.main()

self.assertSuccessfullCleanup()

self.mock_logger.assert_called_once()

def test_log_virtual_active(self):

self.mock_virtual_bus.recv = Mock(side_effect=[self.testmsg, KeyboardInterrupt])

sys.argv = self.baseargs + ["--active"]

can.logger.main()

self.assertSuccessfullCleanup()

self.mock_logger.assert_called_once()

self.assertEqual(self.mock_virtual_bus.state, can.BusState.ACTIVE)

def test_log_virtual_passive(self):

self.mock_virtual_bus.recv = Mock(side_effect=[self.testmsg, KeyboardInterrupt])

sys.argv = self.baseargs + ["--passive"]

can.logger.main()

self.assertSuccessfullCleanup()

self.mock_logger.assert_called_once()

self.assertEqual(self.mock_virtual_bus.state, can.BusState.PASSIVE)

def test_log_virtual_with_config(self):

self.mock_virtual_bus.recv = Mock(side_effect=[self.testmsg, KeyboardInterrupt])

sys.argv = self.baseargs + [

"--bitrate",

"250000",

"--fd",

"--data_bitrate",

"2000000",

]

can.logger.main()

self.assertSuccessfullCleanup()

self.mock_logger.assert_called_once()

def test_log_virtual_sizedlogger(self):

self.mock_virtual_bus.recv = Mock(side_effect=[self.testmsg, KeyboardInterrupt])

self.MockLoggerUse = self.MockLoggerSized

self.loggerToUse = self.mock_logger_sized

sys.argv = self.baseargs + ["--file_size", "1000000"]

can.logger.main()

self.assertSuccessfullCleanup()

self.mock_logger_sized.assert_called_once()

def test_parse_additional_config(self):

unknown_args = [

"--app-name=CANalyzer",

"--serial=5555",

"--receive-own-messages=True",

"--false-boolean=False",

"--offset=1.5",

]

parsed_args = can.logger._parse_additional_config(unknown_args)

assert "app_name" in parsed_args

assert parsed_args["app_name"] == "CANalyzer"

assert "serial" in parsed_args

assert parsed_args["serial"] == 5555

assert "receive_own_messages" in parsed_args

assert (

isinstance(parsed_args["receive_own_messages"], bool)

and parsed_args["receive_own_messages"] is True

)

assert "false_boolean" in parsed_args

assert (

isinstance(parsed_args["false_boolean"], bool)

and parsed_args["false_boolean"] is False

)

assert "offset" in parsed_args

assert parsed_args["offset"] == 1.5

with pytest.raises(ValueError):

can.logger._parse_additional_config(["--wrong-format"])

with pytest.raises(ValueError):

can.logger._parse_additional_config(["-wrongformat=value"])

with pytest.raises(ValueError):

can.logger._parse_additional_config(["--wrongformat=value1 value2"])

with pytest.raises(ValueError):

can.logger._parse_additional_config(["wrongformat="])

class TestLoggerCompressedFile(unittest.TestCase):

def setUp(self) -> None:

# Patch VirtualBus object

self.patcher_virtual_bus = mock.patch(

"can.interfaces.virtual.VirtualBus", spec=True

)

self.MockVirtualBus = self.patcher_virtual_bus.start()

self.mock_virtual_bus = self.MockVirtualBus.return_value

self.testmsg = can.Message(

arbitration_id=0xC0FFEE, data=[0, 25, 0, 1, 3, 1, 4, 1], is_extended_id=True

)

self.baseargs = [sys.argv[0], "-i", "virtual"]

self.testfile = open("coffee.log.gz", "w+")

def test_compressed_logfile(self):

"""

Basic test to verify Logger is able to write gzip files.

"""

self.mock_virtual_bus.recv = Mock(side_effect=[self.testmsg, KeyboardInterrupt])

sys.argv = self.baseargs + ["--file_name", self.testfile.name]

can.logger.main()

with gzip.open(self.testfile.name, "rt") as testlog:

last_line = testlog.readlines()[-1]

self.assertEqual(last_line, "(0.000000) vcan0 00C0FFEE#0019000103010401 R\n")

def tearDown(self) -> None:

self.testfile.close()

os.remove(self.testfile.name)

self.patcher_virtual_bus.stop()

if __name__ == "__main__":

unittest.main()