MiNode/minode/tests/test_structure.py

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2021-08-01 18:57:30 +02:00
import unittest
import struct
from binascii import unhexlify
from minode import structure
class TestStructure(unittest.TestCase):
"""Testing structures serializing and deserializing"""
def test_varint(self):
"""Test varint serializing and deserializing"""
s = structure.VarInt(0)
self.assertEqual(s.to_bytes(), b'\x00')
s = structure.VarInt.from_bytes(b'\x00')
self.assertEqual(s.n, 0)
s = structure.VarInt(42)
self.assertEqual(s.to_bytes(), b'*')
s = structure.VarInt.from_bytes(b'*')
self.assertEqual(s.n, 42)
s = structure.VarInt(252)
self.assertEqual(s.to_bytes(), unhexlify('fc'))
s = structure.VarInt.from_bytes(unhexlify('fc'))
self.assertEqual(s.n, 252)
s = structure.VarInt(253)
self.assertEqual(s.to_bytes(), unhexlify('fd00fd'))
s = structure.VarInt.from_bytes(unhexlify('fd00fd'))
self.assertEqual(s.n, 253)
s = structure.VarInt(100500)
self.assertEqual(s.to_bytes(), unhexlify('fe00018894'))
s = structure.VarInt.from_bytes(unhexlify('fe00018894'))
self.assertEqual(s.n, 100500)
s = structure.VarInt(65535)
self.assertEqual(s.to_bytes(), unhexlify('fdffff'))
s = structure.VarInt.from_bytes(unhexlify('fdffff'))
self.assertEqual(s.n, 65535)
s = structure.VarInt(4294967295)
self.assertEqual(s.to_bytes(), unhexlify('feffffffff'))
s = structure.VarInt.from_bytes(unhexlify('feffffffff'))
self.assertEqual(s.n, 4294967295)
s = structure.VarInt(4294967296)
self.assertEqual(s.to_bytes(), unhexlify('ff0000000100000000'))
s = structure.VarInt.from_bytes(unhexlify('ff0000000100000000'))
self.assertEqual(s.n, 4294967296)
s = structure.VarInt(18446744073709551615)
self.assertEqual(s.to_bytes(), unhexlify('ffffffffffffffffff'))
s = structure.VarInt.from_bytes(unhexlify('ffffffffffffffffff'))
self.assertEqual(s.n, 18446744073709551615)
def test_address(self):
"""Check address encoding in structure.NetAddrNoPrefix()"""
addr = structure.NetAddrNoPrefix(1, '127.0.0.1', 8444)
self.assertEqual(
addr.to_bytes()[8:24],
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF'
+ struct.pack('>L', 2130706433))
addr = structure.NetAddrNoPrefix(1, '191.168.1.1', 8444)
self.assertEqual(
addr.to_bytes()[8:24],
unhexlify('00000000000000000000ffffbfa80101'))
addr = structure.NetAddrNoPrefix(1, '1.1.1.1', 8444)
self.assertEqual(
addr.to_bytes()[8:24],
unhexlify('00000000000000000000ffff01010101'))
addr = structure.NetAddrNoPrefix(
1, '0102:0304:0506:0708:090A:0B0C:0D0E:0F10', 8444)
self.assertEqual(
addr.to_bytes()[8:24],
unhexlify('0102030405060708090a0b0c0d0e0f10'))