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pytest: Add blockchain tracking test

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Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker 2018-02-21 23:48:42 +01:00
parent 4e2c1dd038
commit c9985805cd
1 changed files with 39 additions and 0 deletions
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39
tests/test_lightningd.py
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@ -3763,6 +3763,45 @@ class LightningDTests(BaseLightningDTests):
assert l1.rpc.getpeer(l2.info['id'])['alias'] == l1.rpc.listnodes(l2.info['id'])['nodes'][0]['alias']
assert l1.rpc.getpeer(l2.info['id'])['color'] == l1.rpc.listnodes(l2.info['id'])['nodes'][0]['color']
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_blockchaintrack(self):
"""Check that we track the blockchain correctly across reorgs
"""
l1 = self.node_factory.get_node()
btc = l1.bitcoin
addr = l1.rpc.newaddr()['address']
######################################################################
# First failure scenario: rollback on startup doesn't work,
# and we try to add a block twice when rescanning:
l1.restart()
# At height 442 we receive an incoming payment
hashes = btc.rpc.generate(9)
btc.rpc.sendtoaddress(addr, 1)
time.sleep(1) # mempool is still unpredictable
btc.rpc.generate(1)
l1.daemon.wait_for_log(r'Owning')
outputs = l1.rpc.listfunds()['outputs']
assert len(outputs) == 1
######################################################################
# Second failure scenario: perform a 20 block reorg
btc.rpc.generate(10)
blockheight = btc.rpc.getblockcount()
wait_for(lambda: l1.rpc.dev_blockheight()['blockheight'] == blockheight)
# Now reorg out with a longer fork of 21 blocks
btc.rpc.invalidateblock(hashes[0])
hashes = btc.rpc.generate(21)
blockheight = btc.rpc.getblockcount()
wait_for(lambda: l1.rpc.dev_blockheight()['blockheight'] == blockheight)
# Our funds got reorged out, we should not have any funds that are confirmed
assert [o for o in l1.rpc.listfunds()['outputs'] if o['status'] != "unconfirmed"] == []
if __name__ == '__main__':
unittest.main(verbosity=2)