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#!/usr/bin/env python
"""
Unittest for ixxat interface.
Run only this test:
python setup.py test --addopts "--verbose -s test/test_interface_ixxat.py"
"""
import unittest
import can
class SoftwareTestCase(unittest.TestCase):
"""
Test cases that test the software only and do not rely on an existing/connected hardware.
"""
def setUp(self):
try:
bus = can.Bus(interface="ixxat", channel=0)
bus.shutdown()
except can.CanInterfaceNotImplementedError:
raise unittest.SkipTest("not available on this platform")
def test_bus_creation(self):
# channel must be >= 0
with self.assertRaises(ValueError):
can.Bus(interface="ixxat", channel=-1)
# rx_fifo_size must be > 0
with self.assertRaises(ValueError):
can.Bus(interface="ixxat", channel=0, rx_fifo_size=0)
# tx_fifo_size must be > 0
with self.assertRaises(ValueError):
can.Bus(interface="ixxat", channel=0, tx_fifo_size=0)
class HardwareTestCase(unittest.TestCase):
"""
Test cases that rely on an existing/connected hardware.
"""
def setUp(self):
try:
bus = can.Bus(interface="ixxat", channel=0)
bus.shutdown()
except can.CanInterfaceNotImplementedError:
raise unittest.SkipTest("not available on this platform")
def test_bus_creation(self):
try:
configs = can.detect_available_configs("ixxat")
if configs:
for interface_kwargs in configs:
bus = can.Bus(**interface_kwargs)
bus.shutdown()
else:
raise unittest.SkipTest("No adapters were detected")
except can.CanInterfaceNotImplementedError:
raise unittest.SkipTest("not available on this platform")
def test_bus_creation_incorrect_channel(self):
# non-existent channel -> use arbitrary high value
with self.assertRaises(can.CanInitializationError):
can.Bus(interface="ixxat", channel=0xFFFF)
def test_send_after_shutdown(self):
with can.Bus(interface="ixxat", channel=0) as bus:
with self.assertRaises(can.CanOperationError):
bus.send(can.Message(arbitration_id=0x3FF, dlc=0))
if __name__ == "__main__":
unittest.main()
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