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test: Add anchor mempool acceptance test

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This commit is contained in:
Greg Sanders 2024-06-27 14:45:01 -04:00
parent 9d89209937
commit 1349e9ec15
2 changed files with 54 additions and 0 deletions
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51
test/functional/mempool_accept.py
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@ -37,6 +37,7 @@ from test_framework.script_util import (
keys_to_multisig_script,
MIN_PADDING,
MIN_STANDARD_TX_NONWITNESS_SIZE,
PAY_TO_ANCHOR,
script_to_p2sh_script,
script_to_p2wsh_script,
)
@ -389,6 +390,56 @@ class MempoolAcceptanceTest(BitcoinTestFramework):
maxfeerate=0,
)
self.log.info('OP_1 <0x4e73> is able to be created and spent')
anchor_value = 10000
create_anchor_tx = self.wallet.send_to(from_node=node, scriptPubKey=PAY_TO_ANCHOR, amount=anchor_value)
self.generate(node, 1)
# First spend has non-empty witness, will be rejected to prevent third party wtxid malleability
anchor_nonempty_wit_spend = CTransaction()
anchor_nonempty_wit_spend.vin.append(CTxIn(COutPoint(int(create_anchor_tx["txid"], 16), create_anchor_tx["sent_vout"]), b""))
anchor_nonempty_wit_spend.vout.append(CTxOut(anchor_value - int(fee*COIN), script_to_p2wsh_script(CScript([OP_TRUE]))))
anchor_nonempty_wit_spend.wit.vtxinwit.append(CTxInWitness())
anchor_nonempty_wit_spend.wit.vtxinwit[0].scriptWitness.stack.append(b"f")
anchor_nonempty_wit_spend.rehash()
self.check_mempool_result(
result_expected=[{'txid': anchor_nonempty_wit_spend.rehash(), 'allowed': False, 'reject-reason': 'bad-witness-nonstandard'}],
rawtxs=[anchor_nonempty_wit_spend.serialize().hex()],
maxfeerate=0,
)
# Clear witness stuffing
anchor_spend = anchor_nonempty_wit_spend
anchor_spend.wit.vtxinwit[0].scriptWitness.stack = []
anchor_spend.rehash()
self.check_mempool_result(
result_expected=[{'txid': anchor_spend.rehash(), 'allowed': True, 'vsize': anchor_spend.get_vsize(), 'fees': { 'base': Decimal('0.00000700')}}],
rawtxs=[anchor_spend.serialize().hex()],
maxfeerate=0,
)
self.log.info('But cannot be spent if nested sh()')
nested_anchor_tx = self.wallet.create_self_transfer(sequence=SEQUENCE_FINAL)['tx']
nested_anchor_tx.vout[0].scriptPubKey = script_to_p2sh_script(PAY_TO_ANCHOR)
nested_anchor_tx.rehash()
self.generateblock(node, self.wallet.get_address(), [nested_anchor_tx.serialize().hex()])
nested_anchor_spend = CTransaction()
nested_anchor_spend.vin.append(CTxIn(COutPoint(nested_anchor_tx.sha256, 0), b""))
nested_anchor_spend.vin[0].scriptSig = CScript([bytes(PAY_TO_ANCHOR)])
nested_anchor_spend.vout.append(CTxOut(nested_anchor_tx.vout[0].nValue - int(fee*COIN), script_to_p2wsh_script(CScript([OP_TRUE]))))
nested_anchor_spend.rehash()
self.check_mempool_result(
result_expected=[{'txid': nested_anchor_spend.rehash(), 'allowed': False, 'reject-reason': 'non-mandatory-script-verify-flag (Witness version reserved for soft-fork upgrades)'}],
rawtxs=[nested_anchor_spend.serialize().hex()],
maxfeerate=0,
)
# but is consensus-legal
self.generateblock(node, self.wallet.get_address(), [nested_anchor_spend.serialize().hex()])
self.log.info('Spending a confirmed bare multisig is okay')
address = self.wallet.get_address()
tx = tx_from_hex(raw_tx_reference)

3
test/functional/test_framework/script_util.py
View file

@ -8,6 +8,7 @@ import unittest
from test_framework.script import (
CScript,
OP_0,
OP_1,
OP_15,
OP_16,
OP_CHECKMULTISIG,
@ -42,6 +43,8 @@ assert MIN_PADDING == 5
DUMMY_MIN_OP_RETURN_SCRIPT = CScript([OP_RETURN] + ([OP_0] * (MIN_PADDING - 1)))
assert len(DUMMY_MIN_OP_RETURN_SCRIPT) == MIN_PADDING
PAY_TO_ANCHOR = CScript([OP_1, bytes.fromhex("4e73")])
def key_to_p2pk_script(key):
key = check_key(key)
return CScript([key, OP_CHECKSIG])