def test_hash_frame_mismatch_payload():
"""
Test that _hash_frame returns different hashes for mismatching source
"""
hash1 = APRSInterface._hash_frame(
APRSMessageFrame(
destination='VK4BWI-2',
source='VK4MSL-10',
addressee='VK4BWI-2',
message=b'testing 1',
msgid=123,
repeaters=['WIDE2-1','WIDE1-1']
)
)
hash2 = APRSInterface._hash_frame(
APRSMessageFrame(
destination='VK4BWI-2',
source='VK4MSL-10',
addressee='VK4BWI-2',
message=b'testing 2',
msgid=123,
repeaters=['WIDE2-1','WIDE1-1']
)
)
# These should not be the same
assert hash1 != hash2
def test_hash_frame():
"""
Test that _hash_frame returns a consistent result regardless of digipeaters
"""
hash1 = APRSInterface._hash_frame(
APRSMessageFrame(destination='VK4BWI-2',
source='VK4MSL-10',
addressee='VK4BWI-2',
message=b'testing',
msgid=123,
repeaters=['WIDE2-1', 'WIDE1-1']))
hash2 = APRSInterface._hash_frame(
APRSMessageFrame(destination='VK4BWI-2',
source='VK4MSL-10',
addressee='VK4BWI-2',
message=b'testing',
msgid=123,
repeaters=['VK4RZB*', 'WIDE1-1']))
hash3 = APRSInterface._hash_frame(
APRSMessageFrame(destination='VK4BWI-2',
source='VK4MSL-10',
addressee='VK4BWI-2',
message=b'testing',
msgid=123,
repeaters=['VK4RZB*', 'VK4RZA*']))
# These should all be the same
eq_(hash1, hash2)
eq_(hash1, hash3)
def test_on_receive_dup():
"""
Test _on_receive ignores duplicate frames.
"""
# Create a frame and hash it
frame = AX25UnnumberedInformationFrame(
destination='VK4BWI-2',
source='VK4MSL-10',
pid=0xf0,
payload=b':VK4BWI-2 :testing{123',
repeaters=['WIDE2-1','WIDE1-1']
)
framedigest = APRSInterface._hash_frame(frame)
# Create our interface
ax25int = DummyAX25Interface()
aprsint = APRSInterface(ax25int, 'VK4MSL-10')
# Inject the hash
now = aprsint._loop.time()
aprsint._msg_expiry.update({
framedigest: now + 3
})
# Now pass the frame in as if it were just received
aprsint._on_receive(frame)
# There should be no calls made
eq_(len(ax25int._loop.calls), 0)
def test_test_or_add_frame_expired():
"""
Test that _test_or_add_frame returns False for expired repeats
"""
frame = APRSMessageFrame(
destination='VK4BWI-2',
source='VK4MSL-10',
addressee='VK4BWI-2',
message=b'testing',
msgid=123,
repeaters=['WIDE2-1','WIDE1-1']
)
framedigest = APRSInterface._hash_frame(frame)
ax25int = DummyAX25Interface()
aprsint = APRSInterface(ax25int, 'VK4MSL-10')
# Inject the frame expiry
expiry_time = aprsint._loop.time() - 1
aprsint._msg_expiry[framedigest] = expiry_time
# Try it out
res = aprsint._test_or_add_frame(frame)
# We should get 'False' as the response
eq_(res, False)
# The expiry time should be at least 25 seconds.
eq_(len(aprsint._msg_expiry), 1)
assert_greater(aprsint._msg_expiry.get(framedigest, 0),
ax25int._loop.time() + 25)
# A clean-up should have been scheduled.
eq_(len(ax25int._loop.calls), 1)
(_, callfunc) = ax25int._loop.calls.pop(0)
eq_(callfunc, aprsint._schedule_dedup_cleanup)
def test_test_or_add_frame_repeat():
"""
Test that _test_or_add_frame returns True for un-expired repeats
"""
frame = APRSMessageFrame(
destination='VK4BWI-2',
source='VK4MSL-10',
addressee='VK4BWI-2',
message=b'testing',
msgid=123,
repeaters=['WIDE2-1','WIDE1-1']
)
framedigest = APRSInterface._hash_frame(frame)
ax25int = DummyAX25Interface()
aprsint = APRSInterface(ax25int, 'VK4MSL-10')
# Inject the frame expiry
expiry_time = aprsint._loop.time() + 1
aprsint._msg_expiry[framedigest] = expiry_time
# Try it out
res = aprsint._test_or_add_frame(frame)
# We should get 'False' as the response
eq_(res, True)
# Expiry should not have changed
eq_(len(aprsint._msg_expiry), 1)
eq_(aprsint._msg_expiry[framedigest], expiry_time)
# Nothing further should be done.
eq_(len(ax25int._loop.calls), 0)
