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qa: adapt hardcoded coin selection tests to Taproot

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This commit is contained in:
Antoine Poinsot 2024-03-11 14:35:18 +01:00
parent ecef6bff5e
commit 687a0c2816
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1 changed files with 36 additions and 25 deletions
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61
tests/test_spend.py
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@ -258,7 +258,7 @@ def test_send_to_self(lianad, bitcoind):
assert len(lianad.rpc.listaddresses()["addresses"]) == 3
# Create a new spend to the receive address with index 3.
recv_addr = lianad.rpc.listaddresses(3, 1)["addresses"][0]["receive"]
res = lianad.rpc.createspend({recv_addr: 11_955_000}, [], 1)
res = lianad.rpc.createspend({recv_addr: 11_955_000}, [], 2)
assert "psbt" in res
# Max(receive_index, change_index) is now 4:
assert len(lianad.rpc.listaddresses()["addresses"]) == 4
@ -316,42 +316,52 @@ def test_coin_selection(lianad, bitcoind):
dest_addr_2 = bitcoind.rpc.getnewaddress()
# If feerate is higher than ancestor, we'll need to pay extra.
def additional_fees(anc_vsize, anc_fee, target_feerate):
"""The additional fee which must have been computed by lianad."""
computed_anc_vsize = int(anc_fee / target_feerate)
print(f"c ", computed_anc_vsize)
extra_vsize = anc_vsize - computed_anc_vsize
print("e ", extra_vsize)
return extra_vsize * target_feerate
# Try 10 sat/vb:
spend_res_2 = lianad.rpc.createspend({dest_addr_2: 10_000}, [], 10)
feerate = 10
spend_res_2 = lianad.rpc.createspend({dest_addr_2: 10_000}, [], feerate)
assert "psbt" in spend_res_2
spend_psbt_2 = PSBT.from_base64(spend_res_2["psbt"])
# The spend is using the unconfirmed change.
assert spend_psbt_2.tx.vin[0].prevout.hash == uint256_from_str(
bytes.fromhex(spend_txid_1)[::-1]
)
assert bitcoind.rpc.getmempoolentry(spend_txid_1)["ancestorsize"] == 161
assert bitcoind.rpc.getmempoolentry(spend_txid_1)["fees"]["ancestor"] * COIN == 339
# ancestor vsize at feerate 10 sat/vb = ancestor_fee / 10 = 339 / 10 = 33
# extra_weight <= (extra vsize * witness factor) = (161 - 33) * 4 = 512
# additional fee at 10 sat/vb (2.5 sat/wu) = 512 * 2.5 = 1280
anc_vsize = bitcoind.rpc.getmempoolentry(spend_txid_1)["ancestorsize"]
anc_fees = int(bitcoind.rpc.getmempoolentry(spend_txid_1)["fees"]["ancestor"] * COIN)
if not USE_TAPROOT:
assert anc_vsize == 161 and anc_fees == 339
additional_fee = additional_fees(anc_vsize, anc_fees, feerate)
assert len(spend_res_2["warnings"]) == 1
assert (
spend_res_2["warnings"][0]
== "An additional fee of 1280 sats has been added to pay for ancestors at the target feerate."
== f"An additional fee of {additional_fee} sats has been added to pay for ancestors at the target feerate."
)
# Try 3 sat/vb:
spend_res_2 = lianad.rpc.createspend({dest_addr_2: 10_000}, [], 3)
feerate = 3
spend_res_2 = lianad.rpc.createspend({dest_addr_2: 10_000}, [], feerate)
assert "psbt" in spend_res_2
spend_psbt_2 = PSBT.from_base64(spend_res_2["psbt"])
# The spend is using the unconfirmed change.
assert spend_psbt_2.tx.vin[0].prevout.hash == uint256_from_str(
bytes.fromhex(spend_txid_1)[::-1]
)
assert bitcoind.rpc.getmempoolentry(spend_txid_1)["ancestorsize"] == 161
assert bitcoind.rpc.getmempoolentry(spend_txid_1)["fees"]["ancestor"] * COIN == 339
# ancestor vsize at feerate 3 sat/vb = ancestor_fee / 3 = 339 / 3 = 113
# extra_weight <= (extra vsize * witness factor) = (161 - 113) * 4 = 192
# additional fee at 3 sat/vb (0.75 sat/wu) = 192 * 0.75 = 144
anc_vsize = bitcoind.rpc.getmempoolentry(spend_txid_1)["ancestorsize"]
anc_fees = int(bitcoind.rpc.getmempoolentry(spend_txid_1)["fees"]["ancestor"] * COIN)
if not USE_TAPROOT:
assert anc_vsize == 161 and anc_fees == 339
additional_fee = additional_fees(anc_vsize, anc_fees, feerate)
assert len(spend_res_2["warnings"]) == 1
assert (
spend_res_2["warnings"][0]
== "An additional fee of 144 sats has been added to pay for ancestors at the target feerate."
== f"An additional fee of {additional_fee} sats has been added to pay for ancestors at the target feerate."
)
# 2 sat/vb is same feerate as ancestor and we have no warnings:
@ -386,20 +396,21 @@ def test_coin_selection(lianad, bitcoind):
# We'll need to pay extra for each unconfirmed coin's ancestors.
outpoints = [c["outpoint"] for c in lianad.rpc.listcoins(["unconfirmed"])["coins"]]
spend_res_3 = lianad.rpc.createspend({dest_addr_3: 20_000}, outpoints, 10)
feerate = 10
spend_res_3 = lianad.rpc.createspend({dest_addr_3: 20_000}, outpoints, feerate)
assert "psbt" in spend_res_3
assert bitcoind.rpc.getmempoolentry(deposit_2)["ancestorsize"] == 165
assert bitcoind.rpc.getmempoolentry(deposit_2)["fees"]["ancestor"] * COIN == 165
# From above, extra fee for unconfirmed change at 10 sat/vb = 1280.
# For unconfirmed non-change:
# ancestor vsize at feerate 10 sat/vb = ancestor_fee / 10 = 165 / 10 = 16
# extra_weight <= (extra vsize * witness factor) = (165 - 16) * 4 = 596
# additional fee at 10 sat/vb (2.5 sat/wu) = 596 * 2.5 = 1490
# Sum of extra ancestor fees = 1280 + 1490 = 2770.
anc_vsize = bitcoind.rpc.getmempoolentry(deposit_2)["ancestorsize"]
anc_fees = int(bitcoind.rpc.getmempoolentry(deposit_2)["fees"]["ancestor"] * COIN)
prev_anc_vsize = bitcoind.rpc.getmempoolentry(spend_txid_1)["ancestorsize"]
prev_anc_fees = int(bitcoind.rpc.getmempoolentry(spend_txid_1)["fees"]["ancestor"] * COIN)
if not USE_TAPROOT:
assert anc_vsize == anc_fees == 165
assert prev_anc_vsize == 161 and prev_anc_fees == 339
additional_fee = additional_fees(anc_vsize, anc_fees, feerate) + additional_fees(prev_anc_vsize, prev_anc_fees, feerate)
assert len(spend_res_3["warnings"]) == 1
assert (
spend_res_3["warnings"][0]
== "An additional fee of 2770 sats has been added to pay for ancestors at the target feerate."
== f"An additional fee of {additional_fee} sats has been added to pay for ancestors at the target feerate."
)
spend_psbt_3 = PSBT.from_base64(spend_res_3["psbt"])
spend_txid_3 = sign_and_broadcast_psbt(lianad, spend_psbt_3)