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pytest: test spliceout exceeds channel balance #9042

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6a03a8c
pytest: test spliceout exceeds channel balance
enaples Apr 9, 2026
349934a
pytest: add missing test description
enaples Apr 10, 2026
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16 changes: 15 additions & 1 deletion tests/test_splice.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
from fixtures import * # noqa: F401,F403
from pathlib import Path
from pyln.client import Millisatoshi
from pyln.client import RpcError, Millisatoshi
import pytest
import re
import unittest
Expand Down Expand Up @@ -716,3 +716,17 @@ def test_easy_splice_out_into_channel(node_factory, bitcoind, chainparams):

end_chan1_balance = Millisatoshi(bkpr_account_balance(l2, chan1))
assert initial_chan1_balance + Millisatoshi(spliceamt * 1000) == end_chan1_balance


@pytest.mark.xfail(strict=True)
@pytest.mark.openchannel('v1')
@pytest.mark.openchannel('v2')
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
def test_spliceout_exceeds_channel_balance(node_factory):
"""Test splicing out more than the channel balance fails"""
l1, l2 = node_factory.line_graph(2, fundamount=1000000, wait_for_announce=True,
opts={'experimental-splicing': None})
with pytest.raises(RpcError):
l1.rpc.spliceout("*:?", "99999999") # way more than channel holds
p1 = only_one(l1.rpc.listpeerchannels(peer_id=l2.info['id'])['channels'])
assert 'inflight' not in p1
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