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108 lines
4.3 KiB
108 lines
4.3 KiB
9 years ago
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#!/usr/bin/env python2
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# Copyright (c) 2014-2015 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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# Test descendant package tracking code
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import *
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def satoshi_round(amount):
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return Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
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class MempoolPackagesTest(BitcoinTestFramework):
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def setup_network(self):
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self.nodes = []
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self.nodes.append(start_node(0, self.options.tmpdir, ["-maxorphantx=1000", "-relaypriority=0"]))
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self.is_network_split = False
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self.sync_all()
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# Build a transaction that spends parent_txid:vout
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# Return amount sent
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def chain_transaction(self, parent_txid, vout, value, fee, num_outputs):
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send_value = satoshi_round((value - fee)/num_outputs)
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inputs = [ {'txid' : parent_txid, 'vout' : vout} ]
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outputs = {}
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for i in xrange(num_outputs):
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outputs[self.nodes[0].getnewaddress()] = send_value
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rawtx = self.nodes[0].createrawtransaction(inputs, outputs)
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signedtx = self.nodes[0].signrawtransaction(rawtx)
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txid = self.nodes[0].sendrawtransaction(signedtx['hex'])
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fulltx = self.nodes[0].getrawtransaction(txid, 1)
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assert(len(fulltx['vout']) == num_outputs) # make sure we didn't generate a change output
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return (txid, send_value)
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def run_test(self):
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''' Mine some blocks and have them mature. '''
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self.nodes[0].generate(101)
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utxo = self.nodes[0].listunspent(10)
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txid = utxo[0]['txid']
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vout = utxo[0]['vout']
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value = utxo[0]['amount']
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fee = Decimal("0.0001")
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# 100 transactions off a confirmed tx should be fine
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chain = []
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for i in xrange(100):
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(txid, sent_value) = self.chain_transaction(txid, 0, value, fee, 1)
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value = sent_value
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chain.append(txid)
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# Check mempool has 100 transactions in it, and descendant
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# count and fees should look correct
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mempool = self.nodes[0].getrawmempool(True)
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assert_equal(len(mempool), 100)
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descendant_count = 1
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descendant_fees = 0
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descendant_size = 0
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SATOSHIS = 100000000
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for x in reversed(chain):
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assert_equal(mempool[x]['descendantcount'], descendant_count)
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descendant_fees += mempool[x]['fee']
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assert_equal(mempool[x]['descendantfees'], SATOSHIS*descendant_fees)
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descendant_size += mempool[x]['size']
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assert_equal(mempool[x]['descendantsize'], descendant_size)
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descendant_count += 1
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# Adding one more transaction on to the chain should fail.
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try:
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self.chain_transaction(txid, vout, value, fee, 1)
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except JSONRPCException as e:
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print "too-long-ancestor-chain successfully rejected"
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# TODO: test ancestor size limits
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# Now test descendant chain limits
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txid = utxo[1]['txid']
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value = utxo[1]['amount']
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vout = utxo[1]['vout']
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transaction_package = []
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# First create one parent tx with 10 children
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(txid, sent_value) = self.chain_transaction(txid, vout, value, fee, 10)
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parent_transaction = txid
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for i in xrange(10):
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transaction_package.append({'txid': txid, 'vout': i, 'amount': sent_value})
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for i in xrange(1000):
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utxo = transaction_package.pop(0)
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try:
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(txid, sent_value) = self.chain_transaction(utxo['txid'], utxo['vout'], utxo['amount'], fee, 10)
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for j in xrange(10):
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transaction_package.append({'txid': txid, 'vout': j, 'amount': sent_value})
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if i == 998:
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mempool = self.nodes[0].getrawmempool(True)
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assert_equal(mempool[parent_transaction]['descendantcount'], 1000)
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except JSONRPCException as e:
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print e.error['message']
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assert_equal(i, 999)
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print "tx that would create too large descendant package successfully rejected"
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# TODO: test descendant size limits
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if __name__ == '__main__':
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MempoolPackagesTest().main()
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