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pytest: simple addition to test_onchain_timeout to trigger grind failure.

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Create a second HTLC with a different CTLV but same preimage; onchaind
uses the wrong signature and fails to grind it.

Reported-by: molz (#c-lightning)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2018-10-22 14:52:05 +10:30 • committed by Christian Decker
parent 3746ea36e2
commit a4dbd6e0f0
1 changed files with 11 additions and 4 deletions
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15
tests/test_closing.py
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@ -630,17 +630,15 @@ def test_onchain_dust_out(node_factory, bitcoind, executor):
assert only_one(l2.rpc.listinvoices('onchain_dust_out')['invoices'])['status'] == 'unpaid'
@pytest.mark.xfail(strict=True)
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_onchain_timeout(node_factory, bitcoind, executor):
"""Onchain handling of outgoing failed htlcs"""
# HTLC 1->2, 1 fails just after it's irrevocably committed
disconnects = ['+WIRE_REVOKE_AND_ACK', 'permfail']
disconnects = ['+WIRE_REVOKE_AND_ACK*3', 'permfail']
# Feerates identical so we don't get gratuitous commit to update them
l1 = node_factory.get_node(disconnect=disconnects, feerates=(7500, 7500, 7500))
l2 = node_factory.get_node()
l2 = node_factory.get_node()
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.fund_channel(l2, 10**6)
@ -654,6 +652,15 @@ def test_onchain_timeout(node_factory, bitcoind, executor):
'channel': '1:1:1'
}
l1.rpc.sendpay([routestep], rhash)
with pytest.raises(RpcError):
l1.rpc.waitsendpay(rhash)
# Make sure CLTVs are different, in case it confuses onchaind.
bitcoind.generate_block(1)
sync_blockheight(bitcoind, [l1])
# Second one will cause drop to chain.
l1.rpc.sendpay([routestep], rhash)
payfuture = executor.submit(l1.rpc.waitsendpay, rhash)