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107 lines
4.6 KiB
107 lines
4.6 KiB
#!/usr/bin/env python2 |
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# Copyright (c) 2014 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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# |
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# Test re-org scenarios with a mempool that contains transactions |
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# that spend (directly or indirectly) coinbase transactions. |
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# |
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from test_framework.test_framework import BitcoinTestFramework |
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from test_framework.util import * |
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import os |
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import shutil |
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# Create one-input, one-output, no-fee transaction: |
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class MempoolCoinbaseTest(BitcoinTestFramework): |
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alert_filename = None # Set by setup_network |
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def setup_network(self): |
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args = ["-checkmempool", "-debug=mempool"] |
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self.nodes = [] |
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self.nodes.append(start_node(0, self.options.tmpdir, args)) |
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self.nodes.append(start_node(1, self.options.tmpdir, args)) |
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connect_nodes(self.nodes[1], 0) |
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self.is_network_split = False |
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self.sync_all |
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def create_tx(self, from_txid, to_address, amount): |
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inputs = [{ "txid" : from_txid, "vout" : 0}] |
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outputs = { to_address : amount } |
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rawtx = self.nodes[0].createrawtransaction(inputs, outputs) |
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signresult = self.nodes[0].signrawtransaction(rawtx) |
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assert_equal(signresult["complete"], True) |
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return signresult["hex"] |
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def run_test(self): |
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start_count = self.nodes[0].getblockcount() |
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# Mine three blocks. After this, nodes[0] blocks |
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# 101, 102, and 103 are spend-able. |
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new_blocks = self.nodes[1].generate(4) |
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self.sync_all() |
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node0_address = self.nodes[0].getnewaddress() |
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node1_address = self.nodes[1].getnewaddress() |
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# Three scenarios for re-orging coinbase spends in the memory pool: |
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# 1. Direct coinbase spend : spend_101 |
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# 2. Indirect (coinbase spend in chain, child in mempool) : spend_102 and spend_102_1 |
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# 3. Indirect (coinbase and child both in chain) : spend_103 and spend_103_1 |
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# Use invalidatblock to make all of the above coinbase spends invalid (immature coinbase), |
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# and make sure the mempool code behaves correctly. |
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b = [ self.nodes[0].getblockhash(n) for n in range(101, 105) ] |
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coinbase_txids = [ self.nodes[0].getblock(h)['tx'][0] for h in b ] |
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spend_101_raw = self.create_tx(coinbase_txids[1], node1_address, 50) |
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spend_102_raw = self.create_tx(coinbase_txids[2], node0_address, 50) |
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spend_103_raw = self.create_tx(coinbase_txids[3], node0_address, 50) |
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# Create a block-height-locked transaction which will be invalid after reorg |
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timelock_tx = self.nodes[0].createrawtransaction([{"txid": coinbase_txids[0], "vout": 0}], {node0_address: 50}) |
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# Set the time lock |
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timelock_tx = timelock_tx.replace("ffffffff", "11111111", 1) |
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timelock_tx = timelock_tx[:-8] + hex(self.nodes[0].getblockcount() + 2)[2:] + "000000" |
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timelock_tx = self.nodes[0].signrawtransaction(timelock_tx)["hex"] |
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assert_raises(JSONRPCException, self.nodes[0].sendrawtransaction, timelock_tx) |
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# Broadcast and mine spend_102 and 103: |
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spend_102_id = self.nodes[0].sendrawtransaction(spend_102_raw) |
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spend_103_id = self.nodes[0].sendrawtransaction(spend_103_raw) |
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self.nodes[0].generate(1) |
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assert_raises(JSONRPCException, self.nodes[0].sendrawtransaction, timelock_tx) |
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# Create 102_1 and 103_1: |
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spend_102_1_raw = self.create_tx(spend_102_id, node1_address, 50) |
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spend_103_1_raw = self.create_tx(spend_103_id, node1_address, 50) |
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# Broadcast and mine 103_1: |
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spend_103_1_id = self.nodes[0].sendrawtransaction(spend_103_1_raw) |
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last_block = self.nodes[0].generate(1) |
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timelock_tx_id = self.nodes[0].sendrawtransaction(timelock_tx) |
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# ... now put spend_101 and spend_102_1 in memory pools: |
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spend_101_id = self.nodes[0].sendrawtransaction(spend_101_raw) |
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spend_102_1_id = self.nodes[0].sendrawtransaction(spend_102_1_raw) |
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self.sync_all() |
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assert_equal(set(self.nodes[0].getrawmempool()), set([ spend_101_id, spend_102_1_id, timelock_tx_id ])) |
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for node in self.nodes: |
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node.invalidateblock(last_block[0]) |
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assert_equal(set(self.nodes[0].getrawmempool()), set([ spend_101_id, spend_102_1_id, spend_103_1_id ])) |
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# Use invalidateblock to re-org back and make all those coinbase spends |
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# immature/invalid: |
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for node in self.nodes: |
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node.invalidateblock(new_blocks[0]) |
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self.sync_all() |
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# mempool should be empty. |
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assert_equal(set(self.nodes[0].getrawmempool()), set()) |
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if __name__ == '__main__': |
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MempoolCoinbaseTest().main()
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