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90 lines
3.8 KiB
90 lines
3.8 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2014-2017 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 persistence. |
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By default, bitcoind will dump mempool on shutdown and |
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then reload it on startup. This can be overridden with |
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the -persistmempool=0 command line option. |
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Test is as follows: |
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- start node0, node1 and node2. node1 has -persistmempool=0 |
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- create 5 transactions on node2 to its own address. Note that these |
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are not sent to node0 or node1 addresses because we don't want |
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them to be saved in the wallet. |
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- check that node0 and node1 have 5 transactions in their mempools |
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- shutdown all nodes. |
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- startup node0. Verify that it still has 5 transactions |
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in its mempool. Shutdown node0. This tests that by default the |
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mempool is persistent. |
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- startup node1. Verify that its mempool is empty. Shutdown node1. |
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This tests that with -persistmempool=0, the mempool is not |
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dumped to disk when the node is shut down. |
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- Restart node0 with -persistmempool=0. Verify that its mempool is |
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empty. Shutdown node0. This tests that with -persistmempool=0, |
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the mempool is not loaded from disk on start up. |
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- Restart node0 with -persistmempool. Verify that it has 5 |
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transactions in its mempool. This tests that -persistmempool=0 |
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does not overwrite a previously valid mempool stored on disk. |
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""" |
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import time |
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from test_framework.mininode import wait_until |
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from test_framework.test_framework import BitcoinTestFramework |
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from test_framework.util import * |
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class MempoolPersistTest(BitcoinTestFramework): |
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def __init__(self): |
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super().__init__() |
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# We need 3 nodes for this test. Node1 does not have a persistent mempool. |
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self.num_nodes = 3 |
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self.setup_clean_chain = False |
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self.extra_args = [[], ["-persistmempool=0"], []] |
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def run_test(self): |
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chain_height = self.nodes[0].getblockcount() |
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assert_equal(chain_height, 200) |
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self.log.debug("Mine a single block to get out of IBD") |
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self.nodes[0].generate(1) |
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self.sync_all() |
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self.log.debug("Send 5 transactions from node2 (to its own address)") |
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for i in range(5): |
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self.nodes[2].sendtoaddress(self.nodes[2].getnewaddress(), Decimal("10")) |
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self.sync_all() |
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self.log.debug("Verify that node0 and node1 have 5 transactions in their mempools") |
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assert_equal(len(self.nodes[0].getrawmempool()), 5) |
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assert_equal(len(self.nodes[1].getrawmempool()), 5) |
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self.log.debug("Stop-start node0 and node1. Verify that node0 has the transactions in its mempool and node1 does not.") |
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stop_nodes(self.nodes) |
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self.nodes = [] |
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self.nodes.append(start_node(0, self.options.tmpdir)) |
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self.nodes.append(start_node(1, self.options.tmpdir)) |
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# Give bitcoind a second to reload the mempool |
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time.sleep(1) |
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assert wait_until(lambda: len(self.nodes[0].getrawmempool()) == 5) |
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assert_equal(len(self.nodes[1].getrawmempool()), 0) |
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self.log.debug("Stop-start node0 with -persistmempool=0. Verify that it doesn't load its mempool.dat file.") |
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stop_nodes(self.nodes) |
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self.nodes = [] |
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self.nodes.append(start_node(0, self.options.tmpdir, ["-persistmempool=0"])) |
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# Give bitcoind a second to reload the mempool |
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time.sleep(1) |
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assert_equal(len(self.nodes[0].getrawmempool()), 0) |
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self.log.debug("Stop-start node0. Verify that it has the transactions in its mempool.") |
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stop_nodes(self.nodes) |
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self.nodes = [] |
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self.nodes.append(start_node(0, self.options.tmpdir)) |
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assert wait_until(lambda: len(self.nodes[0].getrawmempool()) == 5) |
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if __name__ == '__main__': |
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MempoolPersistTest().main()
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