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pytest: simple "does onchaind on missing HTLC cause upstream failure" test.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Rusty Russell 2022-03-30 14:12:39 +10:30
parent ea7120a313
commit 1e08c3b882
1 changed files with 37 additions and 0 deletions
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37
tests/test_closing.py
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@ -3631,3 +3631,40 @@ def test_close_weight_estimate(node_factory, bitcoind):
signed_weight = int(bitcoind.rpc.decoderawtransaction(tx)['weight'])
assert signed_weight <= actual_weight
assert signed_weight >= actual_weight - 2
@pytest.mark.developer("needs dev_disconnect")
def test_onchain_close_upstream(node_factory, bitcoind, executor):
"""https://github.com/ElementsProject/lightning/issues/4649
We send an HTLC, and peer unilaterally closes: do we close upstream?
"""
l1, l2, l3 = node_factory.line_graph(3, wait_for_announce=True,
opts=[{},
{},
{'disconnect': ['-WIRE_REVOKE_AND_ACK', 'permfail']}])
# Start payment
inv = l3.rpc.invoice(msatoshi=10000, label='x', description='desc')['bolt11']
fut = executor.submit(l1.rpc.pay, inv)
# l3 goes onchain, without htlc
l3.daemon.wait_for_log('dev_disconnect: -WIRE_REVOKE_AND_ACK')
l3.daemon.wait_for_log('sendrawtransaction')
# Mine it
bitcoind.generate_block(1, wait_for_mempool=1)
# l2 tells onchaind to look for missing HTLC.
l2.daemon.wait_for_logs(['Their unilateral tx',
r'We want to know if htlc 0 is missing \(later\)'])
# After three blocks, onchaind says: definitely missing htlc
bitcoind.generate_block(3)
l2.daemon.wait_for_log('Sending 1 missing htlc messages')
# l2 will tell l1 it has failed the htlc.
l1.daemon.wait_for_log('peer_in WIRE_UPDATE_FAIL_HTLC')
with pytest.raises(RpcError, match=r'WIRE_PERMANENT_CHANNEL_FAILURE \(reply from remote\)'):
fut.result(TIMEOUT)