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test: clean up tx resurrection (re-org) test in feature_block.py

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This comment about ECDSA signatures created with the test framework not
passing mempool policy has been obsolete for a long time (at least since
2019, see PR #15826), so remove it. While at it, change the resurrected
txs to be indeed standard valid, so the `-acceptnonstdtxn=1` parameter
can also be removed.
This commit is contained in:
Sebastian Falbesoner 2026-01-21 04:35:30 +01:00
parent 8c07800b19
commit 5b2c3960b9
1 changed files with 7 additions and 14 deletions
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21
test/functional/feature_block.py
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@ -48,6 +48,7 @@ from test_framework.script import (
sign_input_legacy,
)
from test_framework.script_util import (
key_to_p2pk_script,
script_to_p2sh_script,
)
from test_framework.test_framework import BitcoinTestFramework
@ -90,7 +91,6 @@ class FullBlockTest(BitcoinTestFramework):
self.num_nodes = 1
self.setup_clean_chain = True
self.extra_args = [[
'-acceptnonstdtxn=1', # This is a consensus block test, we don't care about tx policy
'-testactivationheight=bip34@2',
]]
@ -1164,31 +1164,24 @@ class FullBlockTest(BitcoinTestFramework):
#
# b78 creates a tx, which is spent in b79. After b82, both should be in mempool
#
# The tx'es must be unsigned and pass the node's mempool policy. It is unsigned for the
# rather obscure reason that the Python signature code does not distinguish between
# Low-S and High-S values (whereas the bitcoin code has custom code which does so);
# as a result of which, the odds are 50% that the python code will use the right
# value and the transaction will be accepted into the mempool. Until we modify the
# test framework to support low-S signing, we are out of luck.
#
# To get around this issue, we construct transactions which are not signed and which
# spend to OP_TRUE. If the standard-ness rules change, this test would need to be
# updated. (Perhaps to spend to a P2SH OP_TRUE script)
# The resurrected transactions must pass the node's mempool policy, so create
# and spend standard outputs (P2PK using the coinbase pubkey to keep it simple).
self.log.info("Test transaction resurrection during a re-org")
standard_output_script = key_to_p2pk_script(self.coinbase_pubkey)
self.move_tip(76)
self.next_block(77)
tx77 = self.create_and_sign_transaction(out[24], 10 * COIN)
tx77 = self.create_and_sign_transaction(out[24], 10 * COIN, standard_output_script)
b77 = self.update_block(77, [tx77])
self.send_blocks([b77], True)
self.save_spendable_output()
self.next_block(78)
tx78 = self.create_tx(tx77, 0, 9 * COIN)
tx78 = self.create_and_sign_transaction(tx77, 9 * COIN, standard_output_script)
b78 = self.update_block(78, [tx78])
self.send_blocks([b78], True)
self.next_block(79)
tx79 = self.create_tx(tx78, 0, 8 * COIN)
tx79 = self.create_and_sign_transaction(tx78, 8 * COIN, standard_output_script)
b79 = self.update_block(79, [tx79])
self.send_blocks([b79], True)