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estimate witness stack size for multiple inputs

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This commit is contained in:
tecnovert
2026-01-31 13:17:23 +02:00
parent a04ce28ca2
commit ab1f6ea5b6
4 changed files with 50 additions and 15 deletions
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21
tests/basicswap/test_btc_xmr.py
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@@ -1509,6 +1509,23 @@ class BasicSwapTest(TestFunctions):
vsize = tx_decoded["vsize"]
expect_fee_int = round(self.test_fee_rate * vsize / 1000)
tx_obj = ci.loadTx(lock_tx)
vsize_from_ci = ci.getTxVSize(tx_obj)
assert vsize == vsize_from_ci
tx_no_witness = tx_obj.serialize_without_witness()
dummy_witness_stack = []
for txi in tx_obj.vin:
dummy_witness_stack.append(ci.getP2WPKHDummyWitness())
witness_bytes_len_est: int = ci.getWitnessStackSerialisedLength(
dummy_witness_stack
)
tx_obj_no_witness = ci.loadTx(tx_no_witness)
vsize_estimated = ci.getTxVSize(
tx_obj_no_witness, add_witness_bytes=witness_bytes_len_est
)
assert vsize <= vsize_estimated and vsize_estimated - vsize < 4
out_value: int = 0
for txo in tx_decoded["vout"]:
if "value" in txo:
@@ -1556,7 +1573,7 @@ class BasicSwapTest(TestFunctions):
expect_vsize: int = ci.xmr_swap_a_lock_spend_tx_vsize()
assert expect_vsize >= vsize_actual
assert expect_vsize - vsize_actual < 10
assert expect_vsize - vsize_actual <= 10
# Test chain b (no-script) lock tx size
v = ci.getNewRandomKey()
@@ -1577,7 +1594,7 @@ class BasicSwapTest(TestFunctions):
expect_vsize: int = ci.xmr_swap_b_lock_spend_tx_vsize()
assert expect_vsize >= lock_tx_b_spend_decoded["vsize"]
assert expect_vsize - lock_tx_b_spend_decoded["vsize"] < 10
assert expect_vsize - lock_tx_b_spend_decoded["vsize"] <= 10
def test_011_p2sh(self):
# Not used in bsx for native-segwit coins