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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()