Peya/tests/unit_tests/rollup.cpp

// Copyright (c) 2026, Salvium
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#define IN_UNIT_TESTS

#include <cstring>

#include "gtest/gtest.h"

#include "blockchain_db/testdb.h"
#include "cryptonote_core/blockchain.h"
#include "cryptonote_core/blockchain_and_pool.h"

using namespace cryptonote;

namespace
{

class RollupTestDB: public BaseTestDB
{
public:
  RollupTestDB() { m_open = true; }
};

Blockchain *init_blockchain_for_tokens(BlockchainAndPool &bap)
{
  static const std::pair<uint8_t, uint64_t> hard_forks[] = {
    std::make_pair(1, 0),
    std::make_pair(HF_VERSION_ENABLE_TOKENS, 1),
    std::make_pair((uint8_t)0, (uint64_t)0),
  };
  static const test_options opts = {
    hard_forks,
    1000,
  };

  Blockchain *bc = &bap.blockchain;
  const bool ok = bc->init(new RollupTestDB(), network_type::FAKECHAIN, true, &opts, 0, NULL);
  EXPECT_TRUE(ok);
  return bc;
}

transaction make_rollup_tx(uint64_t amount_burnt, std::initializer_list<uint64_t> fees)
{
  transaction tx;
  tx.version = TRANSACTION_VERSION_ENABLE_TOKENS;
  tx.type = transaction_type::ROLLUP;
  tx.source_asset_type = "SAL1";
  tx.destination_asset_type = "SAL1";
  tx.amount_burnt = amount_burnt;
  tx.layer2_rollup_data.version = 1;

  uint64_t nonce = 1;
  for (const uint64_t fee: fees) {
    layer2_rollup_tx_t rollup_tx{};
    std::memcpy(&rollup_tx.tx_prefix_hash, &nonce, sizeof(nonce));
    const uint64_t key_image_nonce = nonce + 100;
    std::memcpy(&rollup_tx.first_key_image, &key_image_nonce, sizeof(key_image_nonce));
    rollup_tx.tx_fee = fee;
    tx.layer2_rollup_data.txs.push_back(rollup_tx);
    ++nonce;
  }

  return tx;
}

} // anonymous namespace

TEST(rollup, rejects_amount_burnt_mismatch)
{
  BlockchainAndPool bap;
  Blockchain *bc = init_blockchain_for_tokens(bap);

  transaction tx = make_rollup_tx(/*amount_burnt=*/5, {2, 4});
  tx_verification_context tvc = AUTO_VAL_INIT(tvc);

  EXPECT_FALSE(bc->check_tx_type_and_version(tx, tvc));
}

TEST(rollup, accepts_matching_amount_burnt)
{
  BlockchainAndPool bap;
  Blockchain *bc = init_blockchain_for_tokens(bap);

  transaction tx = make_rollup_tx(/*amount_burnt=*/6, {2, 4});
  tx_verification_context tvc = AUTO_VAL_INIT(tvc);

  EXPECT_TRUE(bc->check_tx_type_and_version(tx, tvc));
}