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Merge pull request #9753 from f321x/debug_ln_payment_failure

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ln: don't exclude single part configs for too small payments
This commit is contained in:
ThomasV
2025-05-15 13:25:00 +02:00
committed by GitHub
parent 33ea89c94b e8171ca7c6
commit 93e7de20e9
3 changed files with 75 additions and 19 deletions
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54
tests/test_lnpeer.py
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@@ -9,7 +9,7 @@ from collections import defaultdict
import logging
import concurrent
from concurrent import futures
import unittest
from unittest import mock
from typing import Iterable, NamedTuple, Tuple, List, Dict
from aiorpcx import timeout_after, TaskTimeout
@@ -45,6 +45,7 @@ from electrum.invoices import PR_PAID, PR_UNPAID, Invoice
from electrum.interface import GracefulDisconnect
from electrum.simple_config import SimpleConfig
from electrum.fee_policy import FeeTimeEstimates, FEE_ETA_TARGETS
from electrum.mpp_split import split_amount_normal
from .test_lnchannel import create_test_channels
from .test_bitcoin import needs_test_with_all_chacha20_implementations
@@ -323,7 +324,7 @@ class MockLNWallet(Logger, EventListener, NetworkRetryManager[LNPeerAddr]):
is_forwarded_htlc = LNWallet.is_forwarded_htlc
notify_upstream_peer = LNWallet.notify_upstream_peer
_force_close_channel = LNWallet._force_close_channel
suggest_splits = LNWallet.suggest_splits
suggest_payment_splits = LNWallet.suggest_payment_splits
register_hold_invoice = LNWallet.register_hold_invoice
unregister_hold_invoice = LNWallet.unregister_hold_invoice
add_payment_info_for_hold_invoice = LNWallet.add_payment_info_for_hold_invoice
@@ -1556,6 +1557,55 @@ class TestPeerForwarding(TestPeer):
print(f" {keys[a].pubkey.hex()}")
return graph
async def test_payment_in_graph_with_direct_channel(self):
"""Test payment over a direct channel where sender has multiple available channels."""
graph = self.prepare_chans_and_peers_in_graph(self.GRAPH_DEFINITIONS['line_graph'])
peers = graph.peers.values()
# use same MPP_SPLIT_PART_FRACTION as in regular LNWallet
graph.workers['bob'].MPP_SPLIT_PART_FRACTION = LNWallet.MPP_SPLIT_PART_FRACTION
# mock split_amount_normal so it's possible to test both cases, the amount getting sorted
# out because one part is below the min size and the other case of both parts being just
# above the min size, so no part is getting sorted out
def mocked_split_amount_normal(total_amount: int, num_parts: int) -> List[int]:
if num_parts == 2 and total_amount == 21_000_000: # test amount 21k sat
# this will not get sorted out by suggest_splits
return [10_500_000, 10_500_000]
elif num_parts == 2 and total_amount == 21_000_001: # 2nd test case
# this will get sorted out by suggest_splits
return [11_000_002, 9_999_999]
else:
return split_amount_normal(total_amount, num_parts)
async def pay(lnaddr, pay_req):
self.assertEqual(PR_UNPAID, graph.workers['alice'].get_payment_status(lnaddr.paymenthash))
with mock.patch('electrum.mpp_split.split_amount_normal',
side_effect=mocked_split_amount_normal):
result, log = await graph.workers['bob'].pay_invoice(pay_req)
self.assertTrue(result)
self.assertEqual(PR_PAID, graph.workers['alice'].get_payment_status(lnaddr.paymenthash))
async def f():
async with OldTaskGroup() as group:
for peer in peers:
await group.spawn(peer._message_loop())
await group.spawn(peer.htlc_switch())
for peer in peers:
await peer.initialized
for test in [21_000_000, 21_000_001]:
lnaddr, pay_req = self.prepare_invoice(
graph.workers['alice'],
amount_msat=test,
include_routing_hints=True,
invoice_features=LnFeatures.BASIC_MPP_OPT
| LnFeatures.PAYMENT_SECRET_REQ
| LnFeatures.VAR_ONION_REQ
)
await pay(lnaddr, pay_req)
raise PaymentDone()
with self.assertRaises(PaymentDone):
await f()
async def test_payment_multihop(self):
graph = self.prepare_chans_and_peers_in_graph(self.GRAPH_DEFINITIONS['square_graph'])
peers = graph.peers.values()