diff options
Diffstat (limited to 'test')
| -rwxr-xr-x | test/functional/mempool_persist.py | 2 | ||||
| -rwxr-xr-x | test/functional/rpc_fundrawtransaction.py | 28 | ||||
| -rw-r--r-- | test/functional/test_framework/util.py | 28 | ||||
| -rwxr-xr-x | test/functional/wallet_keypool.py | 2 | ||||
| -rwxr-xr-x | test/functional/wallet_send.py | 9 |
5 files changed, 59 insertions, 10 deletions
diff --git a/test/functional/mempool_persist.py b/test/functional/mempool_persist.py index 752b925b92..1ae95fced3 100755 --- a/test/functional/mempool_persist.py +++ b/test/functional/mempool_persist.py @@ -141,7 +141,7 @@ class MempoolPersistTest(BitcoinTestFramework): self.log.debug("Stop nodes, make node1 use mempool.dat from node0. Verify it has 6 transactions") os.rename(mempooldat0, mempooldat1) self.stop_nodes() - self.start_node(1, extra_args=[]) + self.start_node(1, extra_args=["-persistmempool"]) assert self.nodes[1].getmempoolinfo()["loaded"] assert_equal(len(self.nodes[1].getrawmempool()), 6) diff --git a/test/functional/rpc_fundrawtransaction.py b/test/functional/rpc_fundrawtransaction.py index fcc310394a..bbd3dbb10c 100755 --- a/test/functional/rpc_fundrawtransaction.py +++ b/test/functional/rpc_fundrawtransaction.py @@ -100,6 +100,7 @@ class RawTransactionsTest(BitcoinTestFramework): self.test_transaction_too_large() self.test_include_unsafe() self.test_22670() + self.test_feerate_rounding() def test_change_position(self): """Ensure setting changePosition in fundraw with an exact match is handled properly.""" @@ -1026,6 +1027,33 @@ class RawTransactionsTest(BitcoinTestFramework): do_fund_send(upper_bound) self.restart_node(0) + self.connect_nodes(0, 1) + self.connect_nodes(0, 2) + self.connect_nodes(0, 3) + + def test_feerate_rounding(self): + self.log.info("Test that rounding of GetFee does not result in an assertion") + + self.nodes[1].createwallet("roundtest") + w = self.nodes[1].get_wallet_rpc("roundtest") + + addr = w.getnewaddress(address_type="bech32") + self.nodes[0].sendtoaddress(addr, 1) + self.nodes[0].generate(1) + self.sync_all() + + # A P2WPKH input costs 68 vbytes; With a single P2WPKH output, the rest of the tx is 42 vbytes for a total of 110 vbytes. + # At a feerate of 1.85 sat/vb, the input will need a fee of 125.8 sats and the rest 77.7 sats + # The entire tx fee should be 203.5 sats. + # Coin selection rounds the fee individually instead of at the end (due to how CFeeRate::GetFee works). + # If rounding down (which is the incorrect behavior), then the calculated fee will be 125 + 77 = 202. + # If rounding up, then the calculated fee will be 126 + 78 = 204. + # In the former case, the calculated needed fee is higher than the actual fee being paid, so an assertion is reached + # To test this does not happen, we subtract 202 sats from the input value. If working correctly, this should + # fail with insufficient funds rather than bitcoind asserting. + rawtx = w.createrawtransaction(inputs=[], outputs=[{self.nodes[0].getnewaddress(address_type="bech32"): 1 - 0.00000202}]) + assert_raises_rpc_error(-4, "Insufficient funds", w.fundrawtransaction, rawtx, {"fee_rate": 1.85}) + if __name__ == '__main__': RawTransactionsTest().main() diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py index 35dbfbba8d..8a41ec4370 100644 --- a/test/functional/test_framework/util.py +++ b/test/functional/test_framework/util.py @@ -35,13 +35,15 @@ def assert_approx(v, vexp, vspan=0.00001): raise AssertionError("%s > [%s..%s]" % (str(v), str(vexp - vspan), str(vexp + vspan))) -def assert_fee_amount(fee, tx_size, fee_per_kB): - """Assert the fee was in range""" - target_fee = round(tx_size * fee_per_kB / 1000, 8) +def assert_fee_amount(fee, tx_size, feerate_BTC_kvB): + """Assert the fee is in range.""" + assert isinstance(tx_size, int) + target_fee = get_fee(tx_size, feerate_BTC_kvB) if fee < target_fee: raise AssertionError("Fee of %s BTC too low! (Should be %s BTC)" % (str(fee), str(target_fee))) # allow the wallet's estimation to be at most 2 bytes off - if fee > (tx_size + 2) * fee_per_kB / 1000: + high_fee = get_fee(tx_size + 2, feerate_BTC_kvB) + if fee > high_fee: raise AssertionError("Fee of %s BTC too high! (Should be %s BTC)" % (str(fee), str(target_fee))) @@ -222,6 +224,24 @@ def str_to_b64str(string): return b64encode(string.encode('utf-8')).decode('ascii') +def ceildiv(a, b): + """ + Divide 2 ints and round up to next int rather than round down + Implementation requires python integers, which have a // operator that does floor division. + Other types like decimal.Decimal whose // operator truncates towards 0 will not work. + """ + assert isinstance(a, int) + assert isinstance(b, int) + return -(-a // b) + + +def get_fee(tx_size, feerate_btc_kvb): + """Calculate the fee in BTC given a feerate is BTC/kvB. Reflects CFeeRate::GetFee""" + feerate_sat_kvb = int(feerate_btc_kvb * Decimal(1e8)) # Fee in sat/kvb as an int to avoid float precision errors + target_fee_sat = ceildiv(feerate_sat_kvb * tx_size, 1000) # Round calculated fee up to nearest sat + return target_fee_sat / Decimal(1e8) # Return result in BTC + + def satoshi_round(amount): return Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN) diff --git a/test/functional/wallet_keypool.py b/test/functional/wallet_keypool.py index 28bfc9116f..9286387f96 100755 --- a/test/functional/wallet_keypool.py +++ b/test/functional/wallet_keypool.py @@ -179,7 +179,7 @@ class KeyPoolTest(BitcoinTestFramework): assert_equal("psbt" in res, True) # create a transaction without change at the maximum fee rate, such that the output is still spendable: - res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], options={"subtractFeeFromOutputs": [0], "feeRate": 0.0008824}) + res = w2.walletcreatefundedpsbt(inputs=[], outputs=[{destination: 0.00010000}], options={"subtractFeeFromOutputs": [0], "feeRate": 0.0008823}) assert_equal("psbt" in res, True) assert_equal(res["fee"], Decimal("0.00009706")) diff --git a/test/functional/wallet_send.py b/test/functional/wallet_send.py index d24d1693af..d469af600e 100755 --- a/test/functional/wallet_send.py +++ b/test/functional/wallet_send.py @@ -15,6 +15,7 @@ from test_framework.util import ( assert_fee_amount, assert_greater_than, assert_raises_rpc_error, + count_bytes, ) class WalletSendTest(BitcoinTestFramework): @@ -318,20 +319,20 @@ class WalletSendTest(BitcoinTestFramework): res = self.test_send(from_wallet=w0, to_wallet=w1, amount=1, fee_rate=7, add_to_wallet=False) fee = self.nodes[1].decodepsbt(res["psbt"])["fee"] - assert_fee_amount(fee, Decimal(len(res["hex"]) / 2), Decimal("0.00007")) + assert_fee_amount(fee, count_bytes(res["hex"]), Decimal("0.00007")) # "unset" and None are treated the same for estimate_mode res = self.test_send(from_wallet=w0, to_wallet=w1, amount=1, fee_rate=2, estimate_mode="unset", add_to_wallet=False) fee = self.nodes[1].decodepsbt(res["psbt"])["fee"] - assert_fee_amount(fee, Decimal(len(res["hex"]) / 2), Decimal("0.00002")) + assert_fee_amount(fee, count_bytes(res["hex"]), Decimal("0.00002")) res = self.test_send(from_wallet=w0, to_wallet=w1, amount=1, arg_fee_rate=4.531, add_to_wallet=False) fee = self.nodes[1].decodepsbt(res["psbt"])["fee"] - assert_fee_amount(fee, Decimal(len(res["hex"]) / 2), Decimal("0.00004531")) + assert_fee_amount(fee, count_bytes(res["hex"]), Decimal("0.00004531")) res = self.test_send(from_wallet=w0, to_wallet=w1, amount=1, arg_fee_rate=3, add_to_wallet=False) fee = self.nodes[1].decodepsbt(res["psbt"])["fee"] - assert_fee_amount(fee, Decimal(len(res["hex"]) / 2), Decimal("0.00003")) + assert_fee_amount(fee, count_bytes(res["hex"]), Decimal("0.00003")) # Test that passing fee_rate as both an argument and an option raises. self.test_send(from_wallet=w0, to_wallet=w1, amount=1, arg_fee_rate=1, fee_rate=1, add_to_wallet=False, |