def select_transactions(self) -> "Block":
redis_client = redis.Redis(host=Config.REDIS_HOST,
port=Config.REDIS_PORT,
db=Config.REDIS_DB)
keys = redis_client.keys()
transactions = []
for key in sorted(keys):
serialized_tx = redis_client.get(key)
txn = Transaction()
txn.deserialize(serialized_tx.hex())
transactions.append(txn)
self.txns = transactions
return self
def test_serializer_with_coinbase_signatures():
transaction_original = Transaction(
chain=1,
nonce=4_294_967_295,
fee=57000,
value=5_000_000,
to_address="1H7NtUENrEbwSVm52fHePzBnu4W3bCqimP",
unlock_sig=Config.COINBASE_UNLOCK_SIGNATURE,
)
expected_serialization_hex = "01ffffffffa8de0000404b4c00000000003148374e7455454e7245627753566d3532664865507a426e75345733624371696d500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
expected_serialization_bytes = b"\x01\xff\xff\xff\xff\xa8\xde\x00\x00@KL\x00\x00\x00\x00\x001H7NtUENrEbwSVm52fHePzBnu4W3bCqimP\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
assert transaction_original.serialize().hex() == expected_serialization_hex
assert transaction_original.serialize() == expected_serialization_bytes
transaction = Transaction()
transaction.deserialize(expected_serialization_bytes)
assert transaction_original.json() == transaction.json()
def deserialize(self, block_serialized: bytes) -> "Block":
self.version = int.from_bytes(block_serialized[0:4],
byteorder="little")
self.prev_block_hash = block_serialized[36:68].hex()
self.height = int.from_bytes(block_serialized[68:72],
byteorder="little")
self.miner = block_serialized[72:106].decode("utf-8")
self.timestamp = int.from_bytes(block_serialized[106:110],
byteorder="big")
self.bits = block_serialized[110:114]
self.nonce = int.from_bytes(block_serialized[114:118],
byteorder="little")
self.txns = []
block_transations = block_serialized[118:]
for i in range(0, len(block_transations), 179):
txn = Transaction()
txn.deserialize(block_transations[i:i + 179])
self.txns.append(txn)
return self
def test_transaction_serializer_to_sign():
transaction_original = Transaction(
chain=1,
nonce=4_294_967_295,
fee=57000,
value=5_000_000,
to_address="1H7NtUENrEbwSVm52fHePzBnu4W3bCqimP",
)
expected_serialization_hex = "01ffffffffa8de0000404b4c00000000003148374e7455454e7245627753566d3532664865507a426e75345733624371696d50"
expected_serialization_bytes = b"\x01\xff\xff\xff\xff\xa8\xde\x00\x00@KL\x00\x00\x00\x00\x001H7NtUENrEbwSVm52fHePzBnu4W3bCqimP"
assert (transaction_original.serialize(
to_sign=True).hex() == expected_serialization_hex)
assert (transaction_original.serialize(
to_sign=True) == expected_serialization_bytes)
transaction = Transaction()
transaction.deserialize(expected_serialization_bytes)
assert transaction_original.json() == transaction.json()
