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#!/usr/bin/env python
"""
This module tests :meth:`can.interface.virtual`.
"""
import unittest
from can import Bus, Message
EXAMPLE_MSG1 = Message(timestamp=1639739471.5565314, arbitration_id=0x481, data=b"\x01")
class TestMessageFiltering(unittest.TestCase):
def setUp(self):
self.node1 = Bus("test", interface="virtual", preserve_timestamps=True)
self.node2 = Bus("test", interface="virtual")
def tearDown(self):
self.node1.shutdown()
self.node2.shutdown()
def test_sendmsg(self):
self.node2.send(EXAMPLE_MSG1)
r = self.node1.recv(0.1)
assert r.timestamp != EXAMPLE_MSG1.timestamp
assert r.arbitration_id == EXAMPLE_MSG1.arbitration_id
assert r.data == EXAMPLE_MSG1.data
def test_sendmsg_preserve_timestamp(self):
self.node1.send(EXAMPLE_MSG1)
r = self.node2.recv(0.1)
assert r.timestamp == EXAMPLE_MSG1.timestamp
assert r.arbitration_id == EXAMPLE_MSG1.arbitration_id
assert r.data == EXAMPLE_MSG1.data
if __name__ == "__main__":
unittest.main()
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