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test fixup for incremental feerate

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Clarify that the purpose of some parameters are to ensure identical
transactions are not created. Also, strengthen the test to catch these cases.
This commit is contained in:
glozow
2025-08-14 15:34:35 -04:00
parent 636fa219d3
commit c568511e8c
1 changed files with 14 additions and 11 deletions
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23
test/functional/feature_rbf.py
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@@ -13,7 +13,6 @@ from test_framework.messages import (
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_greater_than,
assert_greater_than_or_equal,
assert_raises_rpc_error,
get_fee,
@@ -603,22 +602,26 @@ class ReplaceByFeeTest(BitcoinTestFramework):
low_feerate = min_relay_feerate * 2
confirmed_utxo = self.wallet.get_utxo(confirmed_only=True)
replacee_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, fee_rate=low_feerate, target_vsize=5000)
# Use different versions to avoid creating an identical transaction when failed_replacement_tx is created.
# Use a target vsize that is small, but something larger than the minimum so that we can create a transaction that is 1vB smaller later.
replacee_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, fee_rate=low_feerate, version=3, target_vsize=200)
node.sendrawtransaction(replacee_tx['hex'])
replacement_placeholder_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo)
replacement_placeholder_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, target_vsize=200)
replacement_expected_size = replacement_placeholder_tx['tx'].get_vsize()
replacement_required_fee = get_fee(replacement_expected_size, incremental_setting_decimal) + replacee_tx['fee']
# Should always be required to pay additional fees
if incremental_setting > 0:
assert_greater_than(replacement_required_fee, replacee_tx['fee'])
# 1 satoshi shy of the required fee
failed_replacement_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, fee=replacement_required_fee - Decimal("0.00000001"))
# Show that replacement fails when paying 1 satoshi shy of the required fee
failed_replacement_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, fee=replacement_required_fee - Decimal("0.00000001"), version=2, target_vsize=200)
assert_raises_rpc_error(-26, "insufficient fee", node.sendrawtransaction, failed_replacement_tx['hex'])
replacement_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, fee=replacement_required_fee, version=2, target_vsize=200)
replacement_tx = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, fee=replacement_required_fee)
if incremental_setting == 0:
# When incremental relay feerate is 0, additional fees are not required, but higher feerate is still required.
assert_raises_rpc_error(-26, "insufficient fee", node.sendrawtransaction, replacement_tx['hex'])
replacement_tx_smaller = self.wallet.create_self_transfer(utxo_to_spend=confirmed_utxo, fee=replacement_required_fee, version=2, target_vsize=199)
node.sendrawtransaction(replacement_tx_smaller['hex'])
else:
node.sendrawtransaction(replacement_tx['hex'])
def test_fullrbf(self):