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#!/usr/bin/env python
"""
This module tests :meth:`can.BusABC._detect_available_configs` and
:meth:`can.BusABC.detect_available_configs`.
"""
import unittest
from can import detect_available_configs
from .config import IS_CI, IS_UNIX, TEST_INTERFACE_SOCKETCAN
class TestDetectAvailableConfigs(unittest.TestCase):
def test_count_returned(self):
# At least virtual has to always return at least one interface
self.assertGreaterEqual(len(detect_available_configs()), 1)
self.assertEqual(len(detect_available_configs(interfaces=[])), 0)
self.assertGreaterEqual(len(detect_available_configs(interfaces="virtual")), 1)
self.assertGreaterEqual(
len(detect_available_configs(interfaces=["virtual"])), 1
)
self.assertGreaterEqual(len(detect_available_configs(interfaces=None)), 1)
def test_general_values(self):
configs = detect_available_configs()
for config in configs:
self.assertIn("interface", config)
self.assertIn("channel", config)
def test_content_virtual(self):
configs = detect_available_configs(interfaces="virtual")
self.assertGreaterEqual(len(configs), 1)
for config in configs:
self.assertEqual(config["interface"], "virtual")
def test_content_udp_multicast(self):
configs = detect_available_configs(interfaces="udp_multicast")
for config in configs:
self.assertEqual(config["interface"], "udp_multicast")
def test_content_socketcan(self):
configs = detect_available_configs(interfaces="socketcan")
for config in configs:
self.assertEqual(config["interface"], "socketcan")
def test_count_udp_multicast(self):
configs = detect_available_configs(interfaces="udp_multicast")
if IS_UNIX:
self.assertGreaterEqual(len(configs), 2)
else:
self.assertEqual(len(configs), 0)
@unittest.skipUnless(
TEST_INTERFACE_SOCKETCAN and IS_CI, "this setup is very specific"
)
def test_socketcan_on_ci_server(self):
configs = detect_available_configs(interfaces="socketcan")
self.assertGreaterEqual(len(configs), 1)
self.assertIn("vcan0", [config["channel"] for config in configs])
# see TestSocketCanHelpers.test_find_available_interfaces() too
if __name__ == "__main__":
unittest.main()
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