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#!/usr/bin/env python

"""

This module tests the functions inside of player.py

"""

import unittest

from unittest import mock

from unittest.mock import Mock

import os

import sys

import io

import can

import can.player

class TestPlayerScriptModule(unittest.TestCase):

logfile = os.path.join(os.path.dirname(__file__), "data", "test_CanMessage.asc")

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.__enter__ = Mock(return_value=self.mock_virtual_bus)

# Patch time sleep object

patcher_sleep = mock.patch("can.io.player.time.sleep", spec=True)

self.MockSleep = patcher_sleep.start()

self.addCleanup(patcher_sleep.stop)

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

def assertSuccessfulCleanup(self):

self.MockVirtualBus.assert_called_once()

self.mock_virtual_bus.__exit__.assert_called_once()

def test_play_virtual(self):

sys.argv = self.baseargs + [self.logfile]

can.player.main()

msg1 = can.Message(

timestamp=2.501,

arbitration_id=0xC8,

is_extended_id=False,

is_fd=False,

is_rx=False,

channel=1,

dlc=8,

data=[0x9, 0x8, 0x7, 0x6, 0x5, 0x4, 0x3, 0x2],

)

msg2 = can.Message(

timestamp=17.876708,

arbitration_id=0x6F9,

is_extended_id=False,

is_fd=False,

is_rx=True,

channel=0,

dlc=8,

data=[0x5, 0xC, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0],

)

if sys.version_info >= (3, 8):

# The args argument was introduced with python 3.8

self.assertTrue(

msg1.equals(self.mock_virtual_bus.send.mock_calls[0].args[0])

)

self.assertTrue(

msg2.equals(self.mock_virtual_bus.send.mock_calls[1].args[0])

)

self.assertSuccessfulCleanup()

def test_play_virtual_verbose(self):

sys.argv = self.baseargs + ["-v", self.logfile]

with unittest.mock.patch("sys.stdout", new_callable=io.StringIO) as mock_stdout:

can.player.main()

self.assertIn("09 08 07 06 05 04 03 02", mock_stdout.getvalue())

self.assertIn("05 0c 00 00 00 00 00 00", mock_stdout.getvalue())

self.assertEqual(self.mock_virtual_bus.send.call_count, 2)

self.assertSuccessfulCleanup()

def test_play_virtual_exit(self):

self.MockSleep.side_effect = [None, KeyboardInterrupt]

sys.argv = self.baseargs + [self.logfile]

can.player.main()

assert self.mock_virtual_bus.send.call_count <= 2

self.assertSuccessfulCleanup()

def test_play_skip_error_frame(self):

logfile = os.path.join(

os.path.dirname(__file__), "data", "logfile_errorframes.asc"

)

sys.argv = self.baseargs + ["-v", logfile]

can.player.main()

self.assertEqual(self.mock_virtual_bus.send.call_count, 9)

self.assertSuccessfulCleanup()

def test_play_error_frame(self):

logfile = os.path.join(

os.path.dirname(__file__), "data", "logfile_errorframes.asc"

)

sys.argv = self.baseargs + ["-v", "--error-frames", logfile]

can.player.main()

self.assertEqual(self.mock_virtual_bus.send.call_count, 12)

self.assertSuccessfulCleanup()

class TestPlayerCompressedFile(TestPlayerScriptModule):

"""

Re-run tests using a compressed file.

"""

logfile = os.path.join(os.path.dirname(__file__), "data", "test_CanMessage.asc.gz")

if __name__ == "__main__":

unittest.main()