Differential D9259 Diff 27788 src/test/validation_chainstate_tests.cpp

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src/test/validation_chainstate_tests.cpp

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				// Copyright (c) 2020 The Bitcoin Core developers
				// Distributed under the MIT software license, see the accompanying
				// file COPYING or http://www.opensource.org/licenses/mit-license.php.
				//
				#include <consensus/validation.h>
				#include <random.h>
				#include <sync.h>
				#include <test/util/setup_common.h>
				#include <uint256.h>
				#include <validation.h>

				#include <vector>

				#include <boost/test/unit_test.hpp>

				BOOST_FIXTURE_TEST_SUITE(validation_chainstate_tests, TestingSetup)

				//! Test resizing coins-related CChainState caches during runtime.
				//!
				BOOST_AUTO_TEST_CASE(validation_chainstate_resize_caches) {
				ChainstateManager manager;

				//! Create and add a Coin with DynamicMemoryUsage of 80 bytes to the given
				//! view.
				auto add_coin = [](CCoinsViewCache &coins_view) -> COutPoint {
				TxId txid{InsecureRand256()};
				COutPoint outp{txid, 0};
				Amount nValue = static_cast<int64_t>(InsecureRand32()) * SATOSHI;
				CScript scriptPubKey;
				scriptPubKey.assign((uint32_t)56, 1);
				Coin newcoin(CTxOut(nValue, std::move(scriptPubKey)), 1, false);
				coins_view.AddCoin(outp, std::move(newcoin), false);

				return outp;
				};

				ENTER_CRITICAL_SECTION(cs_main);
				CChainState &c1 = manager.InitializeChainstate();
				LEAVE_CRITICAL_SECTION(cs_main);
				c1.InitCoinsDB(
				/* cache_size_bytes / 1 << 23, / in_memory */ true,
				/* should_wipe */ false);
				WITH_LOCK(::cs_main, c1.InitCoinsCache(1 << 23));

				// Add a coin to the in-memory cache, upsize once, then downsize.
				{
				LOCK(::cs_main);
				auto outpoint = add_coin(c1.CoinsTip());

				// Set a meaningless bestblock value in the coinsview cache - otherwise
				// we won't flush during ResizecoinsCaches() and will subsequently hit
				// an assertion.
				c1.CoinsTip().SetBestBlock(BlockHash{InsecureRand256()});

				BOOST_CHECK(c1.CoinsTip().HaveCoinInCache(outpoint));

				c1.ResizeCoinsCaches(1 << 24, // upsizing the coinsview cache
				1 << 22 // downsizing the coinsdb cache
				);

				// View should still have the coin cached, since we haven't destructed
				// the cache on upsize.
				BOOST_CHECK(c1.CoinsTip().HaveCoinInCache(outpoint));

				c1.ResizeCoinsCaches(1 << 22, // downsizing the coinsview cache
				1 << 23 // upsizing the coinsdb cache
				);

				// The view cache should be empty since we had to destruct to downsize.
				BOOST_CHECK(!c1.CoinsTip().HaveCoinInCache(outpoint));
				}

				// Avoid triggering the address sanitizer.
				WITH_LOCK(::cs_main, manager.Unload());
				}

				BOOST_AUTO_TEST_SUITE_END()