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PyBitmessage-2024-12-01/src/tests/test_packets.py

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import unittest
from binascii import unhexlify
from struct import pack
from pybitmessage import addresses, protocol
from .samples import magic
class TestSerialize(unittest.TestCase):
"""Test serializing and deserializing packet data"""
def test_varint(self):
"""Test varint encoding and decoding"""
data = addresses.encodeVarint(0)
self.assertEqual(data, b'\x00')
data = addresses.encodeVarint(42)
self.assertEqual(data, b'*')
data = addresses.encodeVarint(252)
self.assertEqual(data, unhexlify('fc'))
data = addresses.encodeVarint(253)
self.assertEqual(data, unhexlify('fd00fd'))
data = addresses.encodeVarint(100500)
self.assertEqual(data, unhexlify('fe00018894'))
data = addresses.encodeVarint(65535)
self.assertEqual(data, unhexlify('fdffff'))
data = addresses.encodeVarint(4294967295)
self.assertEqual(data, unhexlify('feffffffff'))
data = addresses.encodeVarint(4294967296)
self.assertEqual(data, unhexlify('ff0000000100000000'))
data = addresses.encodeVarint(18446744073709551615)
self.assertEqual(data, unhexlify('ffffffffffffffffff'))
with self.assertRaises(addresses.varintEncodeError):
addresses.encodeVarint(18446744073709551616)
value, length = addresses.decodeVarint(b'\xfeaddr')
self.assertEqual(value, protocol.OBJECT_ADDR)
self.assertEqual(length, 5)
value, length = addresses.decodeVarint(b'\xfe\x00tor')
self.assertEqual(value, protocol.OBJECT_ONIONPEER)
self.assertEqual(length, 5)
def test_packet(self):
"""Check the packet created by protocol.CreatePacket()"""
head = unhexlify(b'%x' % magic)
self.assertEqual(
protocol.CreatePacket(b'ping')[:len(head)], head)
def test_encodehost(self):
"""Check the result of protocol.encodeHost()"""
self.assertEqual(
protocol.encodeHost('127.0.0.1'),
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF'
+ pack('>L', 2130706433))
self.assertEqual(
protocol.encodeHost('191.168.1.1'),
unhexlify('00000000000000000000ffffbfa80101'))
self.assertEqual(
protocol.encodeHost('1.1.1.1'),
unhexlify('00000000000000000000ffff01010101'))
self.assertEqual(
protocol.encodeHost('0102:0304:0506:0708:090A:0B0C:0D0E:0F10'),
unhexlify('0102030405060708090a0b0c0d0e0f10'))
self.assertEqual(
protocol.encodeHost('quzwelsuziwqgpt2.onion'),
unhexlify('fd87d87eeb438533622e54ca2d033e7a'))