dash/src/test/llmq_dkg_tests.cpp at develop · knst/dash · GitHub

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// Copyright (c) 2022-2025 The Dash Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <llmq/dkgsession.h>
#include <llmq/dkgsessionhandler.h>
#include <protocol.h>
#include <streams.h>
#include <util/helpers.h>
#include <util/std23.h>

#include <boost/test/unit_test.hpp>

BOOST_AUTO_TEST_SUITE(llmq_dkg_tests)

BOOST_AUTO_TEST_CASE(llmq_dkgerror)
{
    using namespace llmq;
    for (auto i : util::irange(std23::to_underlying(llmq::DKGError::type::_COUNT))) {
        BOOST_REQUIRE(GetSimulatedErrorRate(llmq::DKGError::type(i)) == 0.0);
        SetSimulatedDKGErrorRate(llmq::DKGError::type(i), 1.0);
        BOOST_REQUIRE(GetSimulatedErrorRate(llmq::DKGError::type(i)) == 1.0);
    }
    BOOST_REQUIRE(GetSimulatedErrorRate(llmq::DKGError::type::_COUNT) == 0.0);
    SetSimulatedDKGErrorRate(llmq::DKGError::type::_COUNT, 1.0);
    BOOST_REQUIRE(GetSimulatedErrorRate(llmq::DKGError::type::_COUNT) == 0.0);
}

namespace {
std::shared_ptr<CDataStream> MakeDKGMessage()
{
    return std::make_shared<CDataStream>(SER_NETWORK, PROTOCOL_VERSION);
}

uint256 MakeTestHash(uint8_t value)
{
    uint256 hash;
    hash.begin()[0] = value;
    return hash;
}
} // namespace

BOOST_AUTO_TEST_CASE(pending_messages_own_messages_share_quota_path)
{
    using namespace llmq;

    const uint256 own_protx = MakeTestHash(0xee);

    // Own messages (from=-1) are enqueued under this node's proTxHash and
    // charged like any other sender's.
    CDKGPendingMessages pending{/*_maxMessagesPerProTx=*/2};
    pending.PushPendingMessage(/*from=*/-1, own_protx, MakeDKGMessage(), MakeTestHash(1));
    pending.PushPendingMessage(/*from=*/-1, own_protx, MakeDKGMessage(), MakeTestHash(2));
    pending.PushPendingMessage(/*from=*/-1, own_protx, MakeDKGMessage(), MakeTestHash(3));
    BOOST_CHECK(pending.HasSeen(MakeTestHash(2)));
    BOOST_CHECK(!pending.HasSeen(MakeTestHash(3)));

    BOOST_CHECK_EQUAL(pending.PopPendingMessages(3).size(), 2U);
}

BOOST_AUTO_TEST_CASE(pending_messages_quota_survives_reconnect)
{
    using namespace llmq;

    const uint256 protx_a = MakeTestHash(0xa1);

    CDKGPendingMessages pending{/*_maxMessagesPerProTx=*/2};
    pending.PushPendingMessage(/*from=*/1, protx_a, MakeDKGMessage(), MakeTestHash(1));
    pending.PushPendingMessage(/*from=*/1, protx_a, MakeDKGMessage(), MakeTestHash(2));
    BOOST_CHECK(pending.HasSeen(MakeTestHash(1)));
    BOOST_CHECK(pending.HasSeen(MakeTestHash(2)));

    // Reconnecting mints a fresh NodeId but keeps the proTxHash, so the quota
    // is already spent.
    pending.PushPendingMessage(/*from=*/2, protx_a, MakeDKGMessage(), MakeTestHash(3));
    pending.PushPendingMessage(/*from=*/3, protx_a, MakeDKGMessage(), MakeTestHash(4));
    BOOST_CHECK(!pending.HasSeen(MakeTestHash(3)));
    BOOST_CHECK(!pending.HasSeen(MakeTestHash(4)));

    // Draining frees queue slots but does not refund the per-proTx quota.
    BOOST_CHECK_EQUAL(pending.PopPendingMessages(5).size(), 2U);
    pending.PushPendingMessage(/*from=*/4, protx_a, MakeDKGMessage(), MakeTestHash(5));
    BOOST_CHECK(!pending.HasSeen(MakeTestHash(5)));

    // A new round resets everything.
    pending.Clear();
    pending.PushPendingMessage(/*from=*/4, protx_a, MakeDKGMessage(), MakeTestHash(5));
    BOOST_CHECK(pending.HasSeen(MakeTestHash(5)));
}

BOOST_AUTO_TEST_CASE(pending_messages_quota_is_per_protx)
{
    using namespace llmq;

    const uint256 protx_a = MakeTestHash(0xa1);
    const uint256 protx_b = MakeTestHash(0xb1);

    CDKGPendingMessages pending{/*_maxMessagesPerProTx=*/2};
    pending.PushPendingMessage(/*from=*/1, protx_a, MakeDKGMessage(), MakeTestHash(1));
    pending.PushPendingMessage(/*from=*/1, protx_a, MakeDKGMessage(), MakeTestHash(2));

    // Duplicates are rejected before charging the quota.
    pending.PushPendingMessage(/*from=*/2, protx_b, MakeDKGMessage(), MakeTestHash(1));
    pending.PushPendingMessage(/*from=*/2, protx_b, MakeDKGMessage(), MakeTestHash(2));

    // One proTx's spent quota has no effect on another's.
    pending.PushPendingMessage(/*from=*/2, protx_b, MakeDKGMessage(), MakeTestHash(3));
    pending.PushPendingMessage(/*from=*/2, protx_b, MakeDKGMessage(), MakeTestHash(4));
    pending.PushPendingMessage(/*from=*/2, protx_b, MakeDKGMessage(), MakeTestHash(5));
    BOOST_CHECK(pending.HasSeen(MakeTestHash(3)));
    BOOST_CHECK(pending.HasSeen(MakeTestHash(4)));
    BOOST_CHECK(!pending.HasSeen(MakeTestHash(5)));

    // A quota-dropped hash is not marked seen, so a sender with remaining
    // budget can still deliver it.
    const uint256 protx_c = MakeTestHash(0xc1);
    pending.PushPendingMessage(/*from=*/3, protx_c, MakeDKGMessage(), MakeTestHash(5));
    BOOST_CHECK(pending.HasSeen(MakeTestHash(5)));

    BOOST_CHECK_EQUAL(pending.PopPendingMessages(6).size(), 5U);
}

BOOST_AUTO_TEST_SUITE_END()