def test_valid_serialization():
tx_in = TxIn(OutPoint("ff" * 32, 0), Script())
tx_out = TxOut(10, Script())
tx = Tx([tx_in], [tx_out])
assert tx == Tx.deserialize(tx.serialize())
tx_in_2 = TxIn(OutPoint("ff" * 32, 1), Script())
tx = Tx([tx_in, tx_in_2], [tx_out])
assert tx == Tx.deserialize(tx.serialize())
def deserialize(cls, data):
header = BlockHeader.deserialize(data[:76])
transactions = []
transaction_count = int.from_bytes(data[76:78], "big")
data = data[78:]
for i in range(transaction_count):
tx_size = int.from_bytes(data[:2], "big")
transactions.append(Tx.deserialize(data[2:2 + tx_size]))
data = data[2 + tx_size:]
return Block(header, transactions)
