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107 lines
4.3 KiB
107 lines
4.3 KiB
#!/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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