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72 lines
3.0 KiB
Python
Executable File
72 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2020-2021 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test datacarrier functionality"""
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from test_framework.messages import (
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CTxOut,
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MAX_OP_RETURN_RELAY,
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)
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from test_framework.script import (
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CScript,
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OP_RETURN,
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)
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.test_node import TestNode
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from test_framework.util import (
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assert_raises_rpc_error,
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random_bytes,
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)
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from test_framework.wallet import MiniWallet
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class DataCarrierTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 3
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self.extra_args = [
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[],
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["-datacarrier=0"],
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["-datacarrier=1", f"-datacarriersize={MAX_OP_RETURN_RELAY - 1}"]
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]
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def test_null_data_transaction(self, node: TestNode, data: bytes, success: bool) -> None:
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tx = self.wallet.create_self_transfer(fee_rate=0)["tx"]
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tx.vout.append(CTxOut(nValue=0, scriptPubKey=CScript([OP_RETURN, data])))
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tx.vout[0].nValue -= tx.get_vsize() # simply pay 1sat/vbyte fee
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tx_hex = tx.serialize().hex()
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if success:
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self.wallet.sendrawtransaction(from_node=node, tx_hex=tx_hex)
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assert tx.rehash() in node.getrawmempool(True), f'{tx_hex} not in mempool'
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else:
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assert_raises_rpc_error(-26, "scriptpubkey", self.wallet.sendrawtransaction, from_node=node, tx_hex=tx_hex)
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def run_test(self):
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self.wallet = MiniWallet(self.nodes[0])
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self.wallet.rescan_utxos()
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# By default, only 80 bytes are used for data (+1 for OP_RETURN, +2 for the pushdata opcodes).
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default_size_data = random_bytes(MAX_OP_RETURN_RELAY - 3)
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too_long_data = random_bytes(MAX_OP_RETURN_RELAY - 2)
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small_data = random_bytes(MAX_OP_RETURN_RELAY - 4)
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self.log.info("Testing null data transaction with default -datacarrier and -datacarriersize values.")
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self.test_null_data_transaction(node=self.nodes[0], data=default_size_data, success=True)
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self.log.info("Testing a null data transaction larger than allowed by the default -datacarriersize value.")
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self.test_null_data_transaction(node=self.nodes[0], data=too_long_data, success=False)
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self.log.info("Testing a null data transaction with -datacarrier=false.")
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self.test_null_data_transaction(node=self.nodes[1], data=default_size_data, success=False)
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self.log.info("Testing a null data transaction with a size larger than accepted by -datacarriersize.")
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self.test_null_data_transaction(node=self.nodes[2], data=default_size_data, success=False)
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self.log.info("Testing a null data transaction with a size smaller than accepted by -datacarriersize.")
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self.test_null_data_transaction(node=self.nodes[2], data=small_data, success=True)
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if __name__ == '__main__':
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DataCarrierTest().main()
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