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82 lines
3.4 KiB
82 lines
3.4 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2017-2020 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 that mempool.dat is both backward and forward compatible between versions |
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NOTE: The test is designed to prevent cases when compatibility is broken accidentally. |
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In case we need to break mempool compatibility we can continue to use the test by just bumping the version number. |
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The previous release v0.15.2 is required by this test, see test/README.md. |
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""" |
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import os |
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from test_framework.blocktools import COINBASE_MATURITY |
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from test_framework.test_framework import BitcoinTestFramework |
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from test_framework.wallet import MiniWallet |
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class MempoolCompatibilityTest(BitcoinTestFramework): |
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def set_test_params(self): |
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self.num_nodes = 2 |
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self.wallet_names = [None] |
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def skip_test_if_missing_module(self): |
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self.skip_if_no_previous_releases() |
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def setup_network(self): |
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self.add_nodes(self.num_nodes, versions=[ |
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190100, # oldest version with getmempoolinfo.loaded (used to avoid intermittent issues) |
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None, |
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]) |
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self.start_nodes() |
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self.import_deterministic_coinbase_privkeys() |
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def run_test(self): |
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self.log.info("Test that mempool.dat is compatible between versions") |
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old_node, new_node = self.nodes |
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new_wallet = MiniWallet(new_node) |
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new_wallet.generate(1) |
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new_node.generate(COINBASE_MATURITY) |
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# Sync the nodes to ensure old_node has the block that contains the coinbase that new_wallet will spend. |
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# Otherwise, because coinbases are only valid in a block and not as loose txns, if the nodes aren't synced |
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# unbroadcasted_tx won't pass old_node's `MemPoolAccept::PreChecks`. |
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self.connect_nodes(0, 1) |
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self.sync_blocks() |
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recipient = old_node.getnewaddress() |
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self.stop_node(1) |
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self.log.info("Add a transaction to mempool on old node and shutdown") |
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old_tx_hash = old_node.sendtoaddress(recipient, 0.0001) |
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assert old_tx_hash in old_node.getrawmempool() |
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self.stop_node(0) |
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self.log.info("Move mempool.dat from old to new node") |
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old_node_mempool = os.path.join(old_node.datadir, self.chain, 'mempool.dat') |
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new_node_mempool = os.path.join(new_node.datadir, self.chain, 'mempool.dat') |
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os.rename(old_node_mempool, new_node_mempool) |
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self.log.info("Start new node and verify mempool contains the tx") |
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self.start_node(1) |
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assert old_tx_hash in new_node.getrawmempool() |
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self.log.info("Add unbroadcasted tx to mempool on new node and shutdown") |
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unbroadcasted_tx_hash = new_wallet.send_self_transfer(from_node=new_node)['txid'] |
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assert unbroadcasted_tx_hash in new_node.getrawmempool() |
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mempool = new_node.getrawmempool(True) |
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assert mempool[unbroadcasted_tx_hash]['unbroadcast'] |
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self.stop_node(1) |
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self.log.info("Move mempool.dat from new to old node") |
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os.rename(new_node_mempool, old_node_mempool) |
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self.log.info("Start old node again and verify mempool contains both txs") |
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self.start_node(0, ['-nowallet']) |
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assert old_tx_hash in old_node.getrawmempool() |
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assert unbroadcasted_tx_hash in old_node.getrawmempool() |
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if __name__ == "__main__": |
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MempoolCompatibilityTest().main()
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