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pytest: test double-spending an opening tx input.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2021-05-26 10:49:05 +09:30
parent f24dc9173d
commit 95f77f119b
1 changed files with 33 additions and 0 deletions
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33
tests/test_connection.py
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@ -246,6 +246,39 @@ def test_second_channel(node_factory):
l1.fundchannel(l3, 10**6)
def test_channel_abandon(node_factory, bitcoind):
"""Our open tx isn't mined, we doublespend it away"""
l1, l2 = node_factory.get_nodes(2)
SATS = 10**6
# Add some for fees
l1.fundwallet(SATS + 10000)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.rpc.fundchannel(l2.info['id'], SATS, feerate='1875perkw')
opening_utxo = only_one([o for o in l1.rpc.listfunds()['outputs'] if o['reserved']])
psbt = l1.rpc.utxopsbt(0, "253perkw", 0, [opening_utxo['txid'] + ':' + str(opening_utxo['output'])], reserve=False, reservedok=True)['psbt']
# Unreserve until it's considered unreserved.
count = 0
while only_one(l1.rpc.unreserveinputs(psbt)['reservations'])['reserved']:
count += 1
assert count == 1
# Now it's unreserved, we can doublespend it (as long as we exceed
# previous fee to RBF!).
withdraw = l1.rpc.withdraw(l1.rpc.newaddr()['bech32'], "all")
assert bitcoind.rpc.decoderawtransaction(withdraw['tx'])['vout'][0]['value'] > SATS / 10**8
bitcoind.generate_block(1, wait_for_mempool=withdraw['txid'])
# FIXME: lightningd should notice channel will never now open!
print(l1.rpc.listpeers())
assert (only_one(only_one(l1.rpc.listpeers()['peers'])['channels'])['state']
== 'CHANNELD_AWAITING_LOCKIN')
@pytest.mark.developer
@pytest.mark.openchannel('v1')
@pytest.mark.openchannel('v2')