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import argparse

import unittest

from unittest.mock import patch

from can.cli import add_bus_arguments, create_bus_from_namespace

class TestCliUtils(unittest.TestCase):

def test_add_bus_arguments(self):

parser = argparse.ArgumentParser()

add_bus_arguments(parser, filter_arg=True, prefix="test")

parsed_args = parser.parse_args(

[

"--test-channel",

"0",

"--test-interface",

"vector",

"--test-timing",

"f_clock=8000000",

"brp=4",

"tseg1=11",

"tseg2=4",

"sjw=2",

"nof_samples=3",

"--test-filter",

"100:7FF",

"200~7F0",

"--test-bus-kwargs",

"app_name=MyApp",

"serial=1234",

]

)

self.assertNotIn("channel", parsed_args)

self.assertNotIn("test_bitrate", parsed_args)

self.assertNotIn("test_data_bitrate", parsed_args)

self.assertNotIn("test_fd", parsed_args)

self.assertEqual(parsed_args.test_channel, "0")

self.assertEqual(parsed_args.test_interface, "vector")

self.assertEqual(parsed_args.test_timing.f_clock, 8000000)

self.assertEqual(parsed_args.test_timing.brp, 4)

self.assertEqual(parsed_args.test_timing.tseg1, 11)

self.assertEqual(parsed_args.test_timing.tseg2, 4)

self.assertEqual(parsed_args.test_timing.sjw, 2)

self.assertEqual(parsed_args.test_timing.nof_samples, 3)

self.assertEqual(len(parsed_args.test_can_filters), 2)

self.assertEqual(parsed_args.test_can_filters[0]["can_id"], 0x100)

self.assertEqual(parsed_args.test_can_filters[0]["can_mask"], 0x7FF)

self.assertEqual(parsed_args.test_can_filters[1]["can_id"], 0x200 | 0x20000000)

self.assertEqual(

parsed_args.test_can_filters[1]["can_mask"], 0x7F0 & 0x20000000

)

self.assertEqual(parsed_args.test_bus_kwargs["app_name"], "MyApp")

self.assertEqual(parsed_args.test_bus_kwargs["serial"], 1234)

def test_add_bus_arguments_no_prefix(self):

parser = argparse.ArgumentParser()

add_bus_arguments(parser, filter_arg=True)

parsed_args = parser.parse_args(

[

"--channel",

"0",

"--interface",

"vector",

"--timing",

"f_clock=8000000",

"brp=4",

"tseg1=11",

"tseg2=4",

"sjw=2",

"nof_samples=3",

"--filter",

"100:7FF",

"200~7F0",

"--bus-kwargs",

"app_name=MyApp",

"serial=1234",

]

)

self.assertEqual(parsed_args.channel, "0")

self.assertEqual(parsed_args.interface, "vector")

self.assertEqual(parsed_args.timing.f_clock, 8000000)

self.assertEqual(parsed_args.timing.brp, 4)

self.assertEqual(parsed_args.timing.tseg1, 11)

self.assertEqual(parsed_args.timing.tseg2, 4)

self.assertEqual(parsed_args.timing.sjw, 2)

self.assertEqual(parsed_args.timing.nof_samples, 3)

self.assertEqual(len(parsed_args.can_filters), 2)

self.assertEqual(parsed_args.can_filters[0]["can_id"], 0x100)

self.assertEqual(parsed_args.can_filters[0]["can_mask"], 0x7FF)

self.assertEqual(parsed_args.can_filters[1]["can_id"], 0x200 | 0x20000000)

self.assertEqual(parsed_args.can_filters[1]["can_mask"], 0x7F0 & 0x20000000)

self.assertEqual(parsed_args.bus_kwargs["app_name"], "MyApp")

self.assertEqual(parsed_args.bus_kwargs["serial"], 1234)

@patch("can.Bus")

def test_create_bus_from_namespace(self, mock_bus):

namespace = argparse.Namespace(

test_channel="vcan0",

test_interface="virtual",

test_bitrate=500000,

test_data_bitrate=2000000,

test_fd=True,

test_can_filters=[{"can_id": 0x100, "can_mask": 0x7FF}],

test_bus_kwargs={"app_name": "MyApp", "serial": 1234},

)

create_bus_from_namespace(namespace, prefix="test")

mock_bus.assert_called_once_with(

channel="vcan0",

interface="virtual",

bitrate=500000,

data_bitrate=2000000,

fd=True,

can_filters=[{"can_id": 0x100, "can_mask": 0x7FF}],

app_name="MyApp",

serial=1234,

single_handle=True,

)

@patch("can.Bus")

def test_create_bus_from_namespace_no_prefix(self, mock_bus):

namespace = argparse.Namespace(

channel="vcan0",

interface="virtual",

bitrate=500000,

data_bitrate=2000000,

fd=True,

can_filters=[{"can_id": 0x100, "can_mask": 0x7FF}],

bus_kwargs={"app_name": "MyApp", "serial": 1234},

)

create_bus_from_namespace(namespace)

mock_bus.assert_called_once_with(

channel="vcan0",

interface="virtual",

bitrate=500000,

data_bitrate=2000000,

fd=True,

can_filters=[{"can_id": 0x100, "can_mask": 0x7FF}],

app_name="MyApp",

serial=1234,

single_handle=True,

)

if __name__ == "__main__":

unittest.main()