Function BOOST_AUTO_TEST_CASE

src/test/validation_chainstate_tests.cpp:38–75

//! Test resizing coins-related Chainstate caches during runtime.
//!
BOOST_AUTO_TEST_CASE(validation_chainstate_resize_caches)
{
    ChainstateManager& manager = *Assert(m_node.chainman);
    CTxMemPool& mempool = *Assert(m_node.mempool);
    Chainstate& c1 = WITH_LOCK(cs_main, return manager.InitializeChainstate(&mempool));
    c1.InitCoinsDB(
        /*cache_size_bytes=*/8_MiB, /*in_memory=*/true, /*should_wipe=*/false);
    WITH_LOCK(::cs_main, c1.InitCoinsCache(8_MiB));
    BOOST_REQUIRE(c1.LoadGenesisBlock()); // Need at least one block loaded to be able to flush caches

    // Add a coin to the in-memory cache, upsize once, then downsize.
    {
        LOCK(::cs_main);
        const auto outpoint = AddTestCoin(m_rng, 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(m_rng.rand256());

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

        c1.ResizeCoinsCaches(
            16_MiB, // upsizing the coinsview cache
            4_MiB // 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(
            4_MiB, // downsizing the coinsview cache
            8_MiB // upsizing the coinsdb cache
        );

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

BOOST_FIXTURE_TEST_CASE(connect_tip_does_not_cache_inputs_on_failed_connect, TestChain100Setup)
{