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#!/usr/bin/env python2
# Copyright (c) 2014 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
#
# Test resurrection of mined transactions when
# the blockchain is re-organized.
#
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
import os
import shutil
# Create one-input, one-output, no-fee transaction:
class MempoolCoinbaseTest(BitcoinTestFramework):
def setup_network(self):
# Just need one node for this test
args = ["-checkmempool", "-debug=mempool"]
self.nodes = []
self.nodes.append(start_node(0, self.options.tmpdir, args))
self.is_network_split = False
def create_tx(self, from_txid, to_address, amount):
inputs = [{ "txid" : from_txid, "vout" : 0}]
outputs = { to_address : amount }
rawtx = self.nodes[0].createrawtransaction(inputs, outputs)
signresult = self.nodes[0].signrawtransaction(rawtx)
assert_equal(signresult["complete"], True)
return signresult["hex"]
def run_test(self):
node0_address = self.nodes[0].getnewaddress()
# Spend block 1/2/3's coinbase transactions
# Mine a block.
# Create three more transactions, spending the spends
# Mine another block.
# ... make sure all the transactions are confirmed
# Invalidate both blocks
# ... make sure all the transactions are put back in the mempool
# Mine a new block
# ... make sure all the transactions are confirmed again.
b = [ self.nodes[0].getblockhash(n) for n in range(1, 4) ]
coinbase_txids = [ self.nodes[0].getblock(h)['tx'][0] for h in b ]
spends1_raw = [ self.create_tx(txid, node0_address, 50) for txid in coinbase_txids ]
spends1_id = [ self.nodes[0].sendrawtransaction(tx) for tx in spends1_raw ]
blocks = []
blocks.extend(self.nodes[0].generate(1))
spends2_raw = [ self.create_tx(txid, node0_address, 49.99) for txid in spends1_id ]
spends2_id = [ self.nodes[0].sendrawtransaction(tx) for tx in spends2_raw ]
blocks.extend(self.nodes[0].generate(1))
# mempool should be empty, all txns confirmed
assert_equal(set(self.nodes[0].getrawmempool()), set())
for txid in spends1_id+spends2_id:
tx = self.nodes[0].gettransaction(txid)
assert(tx["confirmations"] > 0)
# Use invalidateblock to re-org back; all transactions should
# end up unconfirmed and back in the mempool
for node in self.nodes:
node.invalidateblock(blocks[0])
# mempool should be empty, all txns confirmed
assert_equal(set(self.nodes[0].getrawmempool()), set(spends1_id+spends2_id))
for txid in spends1_id+spends2_id:
tx = self.nodes[0].gettransaction(txid)
assert(tx["confirmations"] == 0)
# Generate another block, they should all get mined
self.nodes[0].generate(1)
# mempool should be empty, all txns confirmed
assert_equal(set(self.nodes[0].getrawmempool()), set())
for txid in spends1_id+spends2_id:
tx = self.nodes[0].gettransaction(txid)
assert(tx["confirmations"] > 0)
if __name__ == '__main__':
MempoolCoinbaseTest().main()
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