text: // Copyright (c) 2011-2016 The Cryptonote developers
   
  // Distributed under the MIT/X11 software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #pragma once
  
  #include <vector>
  
  #include "CryptoNoteCore/Account.h"
  #include "CryptoNoteCore/CryptoNoteBasic.h"
  #include "CryptoNoteCore/CryptoNoteFormatUtils.h"
  #include "CryptoNoteCore/Currency.h"
  #include "CryptoNoteCore/TransactionExtra.h"
  
  #include "crypto/crypto.h"
  
  #include "Logging/ConsoleLogger.h"
  
  template<size_t a_ring_size>
  class multi_tx_test_base
  {
    static_assert(0 < a_ring_size, "ring_size must be greater than 0");
  
  public:
    static const size_t ring_size = a_ring_size;
    static const size_t real_source_idx = ring_size / 2;
  
    bool init()
    {
      using namespace CryptoNote;
  
      Currency currency = CurrencyBuilder(m_logger).currency();
  
      std::vector<TransactionSourceEntry::OutputEntry> output_entries;
      for (uint32_t i = 0; i < ring_size; ++i)
      {
        m_miners[i].generate();
  
        if (!currency.constructMinerTx(0, 0, 0, 2, 0, m_miners[i].getAccountKeys().address, m_miner_txs[i]))
          return false;
  
        KeyOutput tx_out = boost::get<KeyOutput>(m_miner_txs[i].outputs[0].target);
        output_entries.push_back(std::make_pair(i, tx_out.key));
        m_public_keys[i] = tx_out.key;
        m_public_key_ptrs[i] = &m_public_keys[i];
      }
  
      m_source_amount = m_miner_txs[0].outputs[0].amount;
  
      TransactionSourceEntry source_entry;
      source_entry.amount = m_source_amount;
      source_entry.realTransactionPublicKey = getTransactionPublicKeyFromExtra(m_miner_txs[real_source_idx].extra);
      source_entry.realOutputIndexInTransaction = 0;
      source_entry.outputs.swap(output_entries);
      source_entry.realOutput = real_source_idx;
  
      m_sources.push_back(source_entry);
  
      return true;
    }
  
  protected:
    CryptoNote::AccountBase m_miners[ring_size];
    CryptoNote::Transaction m_miner_txs[ring_size];
    uint64_t m_source_amount;
    Logging::ConsoleLogger m_logger;
  
    std::vector<CryptoNote::TransactionSourceEntry> m_sources;
    Crypto::PublicKey m_public_keys[ring_size];
    const Crypto::PublicKey* m_public_key_ptrs[ring_size];
  };
  