17bb230d74
7148b74dc [tests] Functional tests must explicitly set num_nodes (John Newbery) 5448a1471 [tests] don't override __init__() in individual tests (John Newbery) 6cf094a02 [tests] Avoid passing around member variables in test_framework (John Newbery) 36b626867 [tests] TestNode: separate add_node from start_node (John Newbery) be2a2ab6a [tests] fix - use rpc_timeout as rpc timeout (John Newbery) Pull request description: Some additional tidyups after the introduction of TestNode: - commit 1 makes TestNode use the correct rpc timeout. This should have been included in #11077 - commit 2 separates `add_node()` from `start_node()` as originally discussed here: https://github.com/bitcoin/bitcoin/pull/10556#discussion_r121161453 with @kallewoof . The test writer no longer needs to assign to `self.nodes` when starting/stopping nodes. - commit 3 adds a `set_test_params()` method, so individual tests don't need to override `__init__()` and call `super().__init__()` Tree-SHA512: 0adb030623b96675b5c29e2890ce99ccd837ed05f721d0c91b35378c5ac01b6658174aac12f1f77402e1d38b61f39b3c43b4df85c96952565dde1cda05b0db84
98 lines
4.5 KiB
Python
Executable File
98 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2014-2016 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 mempool re-org scenarios.
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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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# Create one-input, one-output, no-fee transaction:
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class MempoolCoinbaseTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 2
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self.extra_args = [["-checkmempool"]] * 2
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alert_filename = None # Set by setup_network
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def run_test(self):
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# Start with a 200 block chain
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assert_equal(self.nodes[0].getblockcount(), 200)
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# Mine four 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 = create_tx(self.nodes[0], coinbase_txids[1], node1_address, 499.9)
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spend_102_raw = create_tx(self.nodes[0], coinbase_txids[2], node0_address, 499.9)
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spend_103_raw = create_tx(self.nodes[0], coinbase_txids[3], node0_address, 499.9)
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# Create a transaction which is time-locked to two blocks in the future
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timelock_tx = self.nodes[0].createrawtransaction([{"txid": coinbase_txids[0], "vout": 0}], {node0_address: 499.9})
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# Set the time lock
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timelock_tx = timelock_tx.replace("ffffffff", "11111191", 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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# This will raise an exception because the timelock transaction is too immature to spend
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assert_raises_jsonrpc(-26, "non-final", 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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# Time-locked transaction is still too immature to spend
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assert_raises_jsonrpc(-26,'non-final', self.nodes[0].sendrawtransaction, timelock_tx)
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# Create 102_1 and 103_1:
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spend_102_1_raw = create_tx(self.nodes[0], spend_102_id, node1_address, 499.8)
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spend_103_1_raw = create_tx(self.nodes[0], spend_103_id, node1_address, 499.8)
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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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# Time-locked transaction can now be spent
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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()), {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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# Time-locked transaction is now too immature and has been removed from the mempool
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# spend_103_1 has been re-orged out of the chain and is back in the mempool
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assert_equal(set(self.nodes[0].getrawmempool()), {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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