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#!/usr/bin/env python
"""
This module tests :meth:`can.BusABC._matches_filters`.
"""
import unittest
from can import Bus, Message
from .data.example_data import TEST_ALL_MESSAGES
EXAMPLE_MSG = Message(arbitration_id=0x123, is_extended_id=True)
HIGHEST_MSG = Message(arbitration_id=0x1FFFFFFF, is_extended_id=True)
MATCH_EXAMPLE = [{"can_id": 0x123, "can_mask": 0x1FFFFFFF, "extended": True}]
MATCH_ONLY_HIGHEST = [{"can_id": 0xFFFFFFFF, "can_mask": 0x1FFFFFFF, "extended": True}]
class TestMessageFiltering(unittest.TestCase):
def setUp(self):
self.bus = Bus(interface="virtual", channel="testy")
def tearDown(self):
self.bus.shutdown()
def test_match_all(self):
# explicitly
self.bus.set_filters()
self.assertTrue(self.bus._matches_filters(EXAMPLE_MSG))
# implicitly
self.bus.set_filters(None)
self.assertTrue(self.bus._matches_filters(EXAMPLE_MSG))
def test_match_filters_is_empty(self):
self.bus.set_filters([])
for msg in TEST_ALL_MESSAGES:
self.assertTrue(self.bus._matches_filters(msg))
def test_match_example_message(self):
self.bus.set_filters(MATCH_EXAMPLE)
self.assertTrue(self.bus._matches_filters(EXAMPLE_MSG))
self.assertFalse(self.bus._matches_filters(HIGHEST_MSG))
self.bus.set_filters(MATCH_ONLY_HIGHEST)
self.assertFalse(self.bus._matches_filters(EXAMPLE_MSG))
self.assertTrue(self.bus._matches_filters(HIGHEST_MSG))
if __name__ == "__main__":
unittest.main()
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