moved all stuff to github

1 files changed, 637 insertions, 0 deletions

diff --git a/tests/core_tests/chaingen.cpp b/tests/core_tests/chaingen.cpp
new file mode 100644
index 000000000..c876e3a75
--- /dev/null
+++ b/tests/core_tests/chaingen.cpp
@@ -0,0 +1,637 @@
+// Copyright (c) 2012-2013 The Cryptonote developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <vector>
+#include <iostream>
+#include <sstream>
+
+#include "include_base_utils.h"
+
+#include "console_handler.h"
+
+#include "p2p/net_node.h"
+#include "cryptonote_core/cryptonote_basic.h"
+#include "cryptonote_core/cryptonote_basic_impl.h"
+#include "cryptonote_core/cryptonote_format_utils.h"
+#include "cryptonote_core/miner.h"
+
+#include "chaingen.h"
+
+using namespace std;
+
+using namespace epee;
+using namespace cryptonote;
+
+
+void test_generator::get_block_chain(std::vector<block_info>& blockchain, const crypto::hash& head, size_t n) const
+{
+  crypto::hash curr = head;
+  while (null_hash != curr && blockchain.size() < n)
+  {
+    auto it = m_blocks_info.find(curr);
+    if (m_blocks_info.end() == it)
+    {
+      throw std::runtime_error("block hash wasn't found");
+    }
+
+    blockchain.push_back(it->second);
+    curr = it->second.prev_id;
+  }
+
+  std::reverse(blockchain.begin(), blockchain.end());
+}
+
+void test_generator::get_last_n_block_sizes(std::vector<size_t>& block_sizes, const crypto::hash& head, size_t n) const
+{
+  std::vector<block_info> blockchain;
+  get_block_chain(blockchain, head, n);
+  BOOST_FOREACH(auto& bi, blockchain)
+  {
+    block_sizes.push_back(bi.block_size);
+  }
+}
+
+uint64_t test_generator::get_already_generated_coins(const crypto::hash& blk_id) const
+{
+  auto it = m_blocks_info.find(blk_id);
+  if (it == m_blocks_info.end())
+    throw std::runtime_error("block hash wasn't found");
+
+  return it->second.already_generated_coins;
+}
+
+uint64_t test_generator::get_already_generated_coins(const cryptonote::block& blk) const
+{
+  crypto::hash blk_hash;
+  get_block_hash(blk, blk_hash);
+  return get_already_generated_coins(blk_hash);
+}
+
+void test_generator::add_block(const cryptonote::block& blk, size_t tsx_size, std::vector<size_t>& block_sizes, uint64_t already_generated_coins)
+{
+  const size_t block_size = tsx_size + get_object_blobsize(blk.miner_tx);
+  bool block_too_big;
+  uint64_t block_reward = get_block_reward(block_sizes, block_size, block_too_big, already_generated_coins);
+  m_blocks_info[get_block_hash(blk)] = block_info(blk.prev_id, already_generated_coins + block_reward, block_size);
+}
+
+bool test_generator::construct_block(cryptonote::block& blk, uint64_t height, const crypto::hash& prev_id,
+                                     const cryptonote::account_base& miner_acc, uint64_t timestamp, uint64_t already_generated_coins,
+                                     std::vector<size_t>& block_sizes, const std::list<cryptonote::transaction>& tx_list)
+{
+  blk.major_version = CURRENT_BLOCK_MAJOR_VERSION;
+  blk.minor_version = CURRENT_BLOCK_MINOR_VERSION;
+  blk.timestamp = timestamp;
+  blk.prev_id = prev_id;
+
+  blk.tx_hashes.reserve(tx_list.size());
+  BOOST_FOREACH(const transaction &tx, tx_list)
+  {
+    crypto::hash tx_hash;
+    get_transaction_hash(tx, tx_hash);
+    blk.tx_hashes.push_back(tx_hash);
+  }
+
+  uint64_t total_fee = 0;
+  size_t txs_size = 0;
+  BOOST_FOREACH(auto& tx, tx_list)
+  {
+    uint64_t fee = 0;
+    bool r = get_tx_fee(tx, fee);
+    CHECK_AND_ASSERT_MES(r, false, "wrong transaction passed to construct_block");
+    total_fee += fee;
+    txs_size += get_object_blobsize(tx);
+  }
+
+  blk.miner_tx = AUTO_VAL_INIT(blk.miner_tx);
+  size_t target_block_size = txs_size + get_object_blobsize(blk.miner_tx);
+  while (true)
+  {
+    if (!construct_miner_tx(height, already_generated_coins, miner_acc.get_keys().m_account_address, blk.miner_tx, total_fee, block_sizes, target_block_size, 10))
+      return false;
+
+    size_t actual_block_size = txs_size + get_object_blobsize(blk.miner_tx);
+    if (target_block_size < actual_block_size)
+    {
+      target_block_size = actual_block_size;
+    }
+    else if (actual_block_size < target_block_size)
+    {
+      size_t delta = target_block_size - actual_block_size;
+      blk.miner_tx.extra.resize(blk.miner_tx.extra.size() + delta, 0);
+      actual_block_size = txs_size + get_object_blobsize(blk.miner_tx);
+      if (actual_block_size == target_block_size)
+      {
+        break;
+      }
+      else
+      {
+        CHECK_AND_ASSERT_MES(target_block_size < actual_block_size, false, "Unexpected block size");
+        delta = actual_block_size - target_block_size;
+        blk.miner_tx.extra.resize(blk.miner_tx.extra.size() - delta);
+        actual_block_size = txs_size + get_object_blobsize(blk.miner_tx);
+        if (actual_block_size == target_block_size)
+        {
+          break;
+        }
+        else
+        {
+          CHECK_AND_ASSERT_MES(actual_block_size < target_block_size, false, "Unexpected block size");
+          blk.miner_tx.extra.resize(blk.miner_tx.extra.size() + delta, 0);
+          target_block_size = txs_size + get_object_blobsize(blk.miner_tx);
+        }
+      }
+    }
+    else
+    {
+      break;
+    }
+  }
+
+  //blk.tree_root_hash = get_tx_tree_hash(blk);
+
+  // Nonce search...
+  blk.nonce = 0;
+  while (!miner::find_nonce_for_given_block(blk, get_test_difficulty(), height))
+    blk.timestamp++;
+
+  add_block(blk, txs_size, block_sizes, already_generated_coins);
+
+  return true;
+}
+
+bool test_generator::construct_block(cryptonote::block& blk, const cryptonote::account_base& miner_acc, uint64_t timestamp)
+{
+  std::vector<size_t> block_sizes;
+  std::list<cryptonote::transaction> tx_list;
+  return construct_block(blk, 0, null_hash, miner_acc, timestamp, 0, block_sizes, tx_list);
+}
+
+bool test_generator::construct_block(cryptonote::block& blk, const cryptonote::block& blk_prev,
+                                     const cryptonote::account_base& miner_acc,
+                                     const std::list<cryptonote::transaction>& tx_list/* = std::list<cryptonote::transaction>()*/)
+{
+  uint64_t height = boost::get<txin_gen>(blk_prev.miner_tx.vin.front()).height + 1;
+  crypto::hash prev_id = get_block_hash(blk_prev);
+  // Keep difficulty unchanged
+  uint64_t timestamp = blk_prev.timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN;
+  uint64_t already_generated_coins = get_already_generated_coins(prev_id);
+  std::vector<size_t> block_sizes;
+  get_last_n_block_sizes(block_sizes, prev_id, CRYPTONOTE_REWARD_BLOCKS_WINDOW);
+
+  return construct_block(blk, height, prev_id, miner_acc, timestamp, already_generated_coins, block_sizes, tx_list);
+}
+
+bool test_generator::construct_block_manually(block& blk, const block& prev_block, const account_base& miner_acc,
+                                              int actual_params/* = bf_none*/, uint8_t major_ver/* = 0*/,
+                                              uint8_t minor_ver/* = 0*/, uint64_t timestamp/* = 0*/,
+                                              const crypto::hash& prev_id/* = crypto::hash()*/, const difficulty_type& diffic/* = 1*/,
+                                              const transaction& miner_tx/* = transaction()*/,
+                                              const std::vector<crypto::hash>& tx_hashes/* = std::vector<crypto::hash>()*/,
+                                              size_t txs_sizes/* = 0*/)
+{
+  blk.major_version = actual_params & bf_major_ver ? major_ver : CURRENT_BLOCK_MAJOR_VERSION;
+  blk.minor_version = actual_params & bf_minor_ver ? minor_ver : CURRENT_BLOCK_MINOR_VERSION;
+  blk.timestamp     = actual_params & bf_timestamp ? timestamp : prev_block.timestamp + DIFFICULTY_BLOCKS_ESTIMATE_TIMESPAN; // Keep difficulty unchanged
+  blk.prev_id       = actual_params & bf_prev_id   ? prev_id   : get_block_hash(prev_block);
+  blk.tx_hashes     = actual_params & bf_tx_hashes ? tx_hashes : std::vector<crypto::hash>();
+
+  size_t height = get_block_height(prev_block) + 1;
+  uint64_t already_generated_coins = get_already_generated_coins(prev_block);
+  std::vector<size_t> block_sizes;
+  get_last_n_block_sizes(block_sizes, get_block_hash(prev_block), CRYPTONOTE_REWARD_BLOCKS_WINDOW);
+  if (actual_params & bf_miner_tx)
+  {
+    blk.miner_tx = miner_tx;
+  }
+  else
+  {
+    size_t current_block_size = txs_sizes + get_object_blobsize(blk.miner_tx);
+    // TODO: This will work, until size of constructed block is less then CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE
+    if (!construct_miner_tx(height, already_generated_coins, miner_acc.get_keys().m_account_address, blk.miner_tx, 0, block_sizes, current_block_size, 1))
+      return false;
+  }
+
+  //blk.tree_root_hash = get_tx_tree_hash(blk);
+
+  difficulty_type a_diffic = actual_params & bf_diffic ? diffic : get_test_difficulty();
+  fill_nonce(blk, a_diffic, height);
+
+  add_block(blk, txs_sizes, block_sizes, already_generated_coins);
+
+  return true;
+}
+
+bool test_generator::construct_block_manually_tx(cryptonote::block& blk, const cryptonote::block& prev_block,
+                                                 const cryptonote::account_base& miner_acc,
+                                                 const std::vector<crypto::hash>& tx_hashes, size_t txs_size)
+{
+  return construct_block_manually(blk, prev_block, miner_acc, bf_tx_hashes, 0, 0, 0, crypto::hash(), 0, transaction(), tx_hashes, txs_size);
+}
+
+
+struct output_index {
+    const cryptonote::txout_target_v out;
+    uint64_t amount;
+    size_t blk_height; // block height
+    size_t tx_no; // index of transaction in block
+    size_t out_no; // index of out in transaction
+    size_t idx;
+    bool spent;
+    const cryptonote::block *p_blk;
+    const cryptonote::transaction *p_tx;
+
+    output_index(const cryptonote::txout_target_v &_out, uint64_t _a, size_t _h, size_t tno, size_t ono, const cryptonote::block *_pb, const cryptonote::transaction *_pt)
+        : out(_out), amount(_a), blk_height(_h), tx_no(tno), out_no(ono), idx(0), spent(false), p_blk(_pb), p_tx(_pt) { }
+
+    output_index(const output_index &other)
+        : out(other.out), amount(other.amount), blk_height(other.blk_height), tx_no(other.tx_no), out_no(other.out_no), idx(other.idx), spent(other.spent), p_blk(other.p_blk), p_tx(other.p_tx) {  }
+
+    const std::string toString() const {
+        std::stringstream ss;
+
+        ss << "output_index{blk_height=" << blk_height
+           << " tx_no=" << tx_no
+           << " out_no=" << out_no
+           << " amount=" << amount
+           << " idx=" << idx
+           << " spent=" << spent
+           << "}";
+
+        return ss.str();
+    }
+
+    output_index& operator=(const output_index& other)
+    {
+      new(this) output_index(other);
+      return *this;
+    }
+};
+
+typedef std::map<uint64_t, std::vector<size_t> > map_output_t;
+typedef std::map<uint64_t, std::vector<output_index> > map_output_idx_t;
+typedef pair<uint64_t, size_t>  outloc_t;
+
+namespace
+{
+  uint64_t get_inputs_amount(const vector<tx_source_entry> &s)
+  {
+    uint64_t r = 0;
+    BOOST_FOREACH(const tx_source_entry &e, s)
+    {
+      r += e.amount;
+    }
+
+    return r;
+  }
+}
+
+bool init_output_indices(map_output_idx_t& outs, std::map<uint64_t, std::vector<size_t> >& outs_mine, const std::vector<cryptonote::block>& blockchain, const map_hash2tx_t& mtx, const cryptonote::account_base& from) {
+
+    BOOST_FOREACH (const block& blk, blockchain) {
+        vector<const transaction*> vtx;
+        vtx.push_back(&blk.miner_tx);
+
+        BOOST_FOREACH(const crypto::hash &h, blk.tx_hashes) {
+            const map_hash2tx_t::const_iterator cit = mtx.find(h);
+            if (mtx.end() == cit)
+                throw std::runtime_error("block contains an unknown tx hash");
+
+            vtx.push_back(cit->second);
+        }
+
+        //vtx.insert(vtx.end(), blk.);
+        // TODO: add all other txes
+        for (size_t i = 0; i < vtx.size(); i++) {
+            const transaction &tx = *vtx[i];
+
+            for (size_t j = 0; j < tx.vout.size(); ++j) {
+                const tx_out &out = tx.vout[j];
+
+                output_index oi(out.target, out.amount, boost::get<txin_gen>(*blk.miner_tx.vin.begin()).height, i, j, &blk, vtx[i]);
+
+                if (2 == out.target.which()) { // out_to_key
+                    outs[out.amount].push_back(oi);
+                    size_t tx_global_idx = outs[out.amount].size() - 1;
+                    outs[out.amount][tx_global_idx].idx = tx_global_idx;
+                    // Is out to me?
+                    if (is_out_to_acc(from.get_keys(), boost::get<txout_to_key>(out.target), get_tx_pub_key_from_extra(tx), j)) {
+                        outs_mine[out.amount].push_back(tx_global_idx);
+                    }
+                }
+            }
+        }
+    }
+
+    return true;
+}
+
+bool init_spent_output_indices(map_output_idx_t& outs, map_output_t& outs_mine, const std::vector<cryptonote::block>& blockchain, const map_hash2tx_t& mtx, const cryptonote::account_base& from) {
+
+    BOOST_FOREACH (const map_output_t::value_type &o, outs_mine) {
+        for (size_t i = 0; i < o.second.size(); ++i) {
+            output_index &oi = outs[o.first][o.second[i]];
+
+            // construct key image for this output
+            crypto::key_image img;
+            keypair in_ephemeral;
+            generate_key_image_helper(from.get_keys(), get_tx_pub_key_from_extra(*oi.p_tx), oi.out_no, in_ephemeral, img);
+
+            // lookup for this key image in the events vector
+            BOOST_FOREACH(auto& tx_pair, mtx) {
+                const transaction& tx = *tx_pair.second;
+                BOOST_FOREACH(const txin_v &in, tx.vin) {
+                    if (typeid(txin_to_key) == in.type()) {
+                        const txin_to_key &itk = boost::get<txin_to_key>(in);
+                        if (itk.k_image == img) {
+                            oi.spent = true;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    return true;
+}
+
+bool fill_output_entries(std::vector<output_index>& out_indices, size_t sender_out, size_t nmix, size_t& real_entry_idx, std::vector<tx_source_entry::output_entry>& output_entries)
+{
+  if (out_indices.size() <= nmix)
+    return false;
+
+  bool sender_out_found = false;
+  size_t rest = nmix;
+  for (size_t i = 0; i < out_indices.size() && (0 < rest || !sender_out_found); ++i)
+  {
+    const output_index& oi = out_indices[i];
+    if (oi.spent)
+      continue;
+
+    bool append = false;
+    if (i == sender_out)
+    {
+      append = true;
+      sender_out_found = true;
+      real_entry_idx = output_entries.size();
+    }
+    else if (0 < rest)
+    {
+      --rest;
+      append = true;
+    }
+
+    if (append)
+    {
+      const txout_to_key& otk = boost::get<txout_to_key>(oi.out);
+      output_entries.push_back(tx_source_entry::output_entry(oi.idx, otk.key));
+    }
+  }
+
+  return 0 == rest && sender_out_found;
+}
+
+bool fill_tx_sources(std::vector<tx_source_entry>& sources, const std::vector<test_event_entry>& events,
+                     const block& blk_head, const cryptonote::account_base& from, uint64_t amount, size_t nmix)
+{
+    map_output_idx_t outs;
+    map_output_t outs_mine;
+
+    std::vector<cryptonote::block> blockchain;
+    map_hash2tx_t mtx;
+    if (!find_block_chain(events, blockchain, mtx, get_block_hash(blk_head)))
+        return false;
+
+    if (!init_output_indices(outs, outs_mine, blockchain, mtx, from))
+        return false;
+
+    if (!init_spent_output_indices(outs, outs_mine, blockchain, mtx, from))
+        return false;
+
+    // Iterate in reverse is more efficiency
+    uint64_t sources_amount = 0;
+    bool sources_found = false;
+    BOOST_REVERSE_FOREACH(const map_output_t::value_type o, outs_mine)
+    {
+        for (size_t i = 0; i < o.second.size() && !sources_found; ++i)
+        {
+            size_t sender_out = o.second[i];
+            const output_index& oi = outs[o.first][sender_out];
+            if (oi.spent)
+                continue;
+
+            cryptonote::tx_source_entry ts;
+            ts.amount = oi.amount;
+            ts.real_output_in_tx_index = oi.out_no;
+            ts.real_out_tx_key = get_tx_pub_key_from_extra(*oi.p_tx); // incoming tx public key
+            if (!fill_output_entries(outs[o.first], sender_out, nmix, ts.real_output, ts.outputs))
+              continue;
+
+            sources.push_back(ts);
+
+            sources_amount += ts.amount;
+            sources_found = amount <= sources_amount;
+        }
+
+        if (sources_found)
+            break;
+    }
+
+    return sources_found;
+}
+
+bool fill_tx_destination(tx_destination_entry &de, const cryptonote::account_base &to, uint64_t amount) {
+    de.addr = to.get_keys().m_account_address;
+    de.amount = amount;
+    return true;
+}
+
+void fill_tx_sources_and_destinations(const std::vector<test_event_entry>& events, const block& blk_head,
+                                      const cryptonote::account_base& from, const cryptonote::account_base& to,
+                                      uint64_t amount, uint64_t fee, size_t nmix, std::vector<tx_source_entry>& sources,
+                                      std::vector<tx_destination_entry>& destinations)
+{
+  sources.clear();
+  destinations.clear();
+
+  if (!fill_tx_sources(sources, events, blk_head, from, amount + fee, nmix))
+    throw std::runtime_error("couldn't fill transaction sources");
+
+  tx_destination_entry de;
+  if (!fill_tx_destination(de, to, amount))
+    throw std::runtime_error("couldn't fill transaction destination");
+  destinations.push_back(de);
+
+  tx_destination_entry de_change;
+  uint64_t cache_back = get_inputs_amount(sources) - (amount + fee);
+  if (0 < cache_back)
+  {
+    if (!fill_tx_destination(de_change, from, cache_back))
+      throw std::runtime_error("couldn't fill transaction cache back destination");
+    destinations.push_back(de_change);
+  }
+}
+
+void fill_nonce(cryptonote::block& blk, const difficulty_type& diffic, uint64_t height)
+{
+  blk.nonce = 0;
+  while (!miner::find_nonce_for_given_block(blk, diffic, height))
+    blk.timestamp++;
+}
+
+bool construct_miner_tx_manually(size_t height, uint64_t already_generated_coins,
+                                 const account_public_address& miner_address, transaction& tx, uint64_t fee,
+                                 keypair* p_txkey/* = 0*/)
+{
+  keypair txkey;
+  txkey = keypair::generate();
+  add_tx_pub_key_to_extra(tx, txkey.pub);
+
+  if (0 != p_txkey)
+    *p_txkey = txkey;
+
+  txin_gen in;
+  in.height = height;
+  tx.vin.push_back(in);
+
+  // This will work, until size of constructed block is less then CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE
+  std::vector<size_t> block_sizes;
+  bool block_too_big = false;
+  uint64_t block_reward = get_block_reward(block_sizes, 0, block_too_big, already_generated_coins) + fee;
+  if (block_too_big)
+  {
+    LOG_PRINT_L0("Block is too big");
+    return false;
+  }
+
+  crypto::key_derivation derivation;
+  crypto::public_key out_eph_public_key;
+  crypto::generate_key_derivation(miner_address.m_view_public_key, txkey.sec, derivation);
+  crypto::derive_public_key(derivation, 0, miner_address.m_spend_public_key, out_eph_public_key);
+
+  tx_out out;
+  out.amount = block_reward;
+  out.target = txout_to_key(out_eph_public_key);
+  tx.vout.push_back(out);
+
+  tx.version = CURRENT_TRANSACTION_VERSION;
+  tx.unlock_time = height + CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW;
+
+  return true;
+}
+
+bool construct_tx_to_key(const std::vector<test_event_entry>& events, cryptonote::transaction& tx, const block& blk_head,
+                         const cryptonote::account_base& from, const cryptonote::account_base& to, uint64_t amount,
+                         uint64_t fee, size_t nmix)
+{
+  vector<tx_source_entry> sources;
+  vector<tx_destination_entry> destinations;
+  fill_tx_sources_and_destinations(events, blk_head, from, to, amount, fee, nmix, sources, destinations);
+
+  return construct_tx(from.get_keys(), sources, destinations, tx, 0);
+}
+
+transaction construct_tx_with_fee(std::vector<test_event_entry>& events, const block& blk_head,
+                                  const account_base& acc_from, const account_base& acc_to, uint64_t amount, uint64_t fee)
+{
+  transaction tx;
+  construct_tx_to_key(events, tx, blk_head, acc_from, acc_to, amount, fee, 0);
+  events.push_back(tx);
+  return tx;
+}
+
+uint64_t get_balance(const cryptonote::account_base& addr, const std::vector<cryptonote::block>& blockchain, const map_hash2tx_t& mtx) {
+    uint64_t res = 0;
+    std::map<uint64_t, std::vector<output_index> > outs;
+    std::map<uint64_t, std::vector<size_t> > outs_mine;
+
+    map_hash2tx_t confirmed_txs;
+    get_confirmed_txs(blockchain, mtx, confirmed_txs);
+
+    if (!init_output_indices(outs, outs_mine, blockchain, confirmed_txs, addr))
+        return false;
+
+    if (!init_spent_output_indices(outs, outs_mine, blockchain, confirmed_txs, addr))
+        return false;
+
+    BOOST_FOREACH (const map_output_t::value_type &o, outs_mine) {
+        for (size_t i = 0; i < o.second.size(); ++i) {
+            if (outs[o.first][o.second[i]].spent)
+                continue;
+
+            res += outs[o.first][o.second[i]].amount;
+        }
+    }
+
+    return res;
+}
+
+void get_confirmed_txs(const std::vector<cryptonote::block>& blockchain, const map_hash2tx_t& mtx, map_hash2tx_t& confirmed_txs)
+{
+  std::unordered_set<crypto::hash> confirmed_hashes;
+  BOOST_FOREACH(const block& blk, blockchain)
+  {
+    BOOST_FOREACH(const crypto::hash& tx_hash, blk.tx_hashes)
+    {
+      confirmed_hashes.insert(tx_hash);
+    }
+  }
+
+  BOOST_FOREACH(const auto& tx_pair, mtx)
+  {
+    if (0 != confirmed_hashes.count(tx_pair.first))
+    {
+      confirmed_txs.insert(tx_pair);
+    }
+  }
+}
+
+bool find_block_chain(const std::vector<test_event_entry>& events, std::vector<cryptonote::block>& blockchain, map_hash2tx_t& mtx, const crypto::hash& head) {
+    std::unordered_map<crypto::hash, const block*> block_index;
+    BOOST_FOREACH(const test_event_entry& ev, events)
+    {
+        if (typeid(block) == ev.type())
+        {
+            const block* blk = &boost::get<block>(ev);
+            block_index[get_block_hash(*blk)] = blk;
+        }
+        else if (typeid(transaction) == ev.type())
+        {
+            const transaction& tx = boost::get<transaction>(ev);
+            mtx[get_transaction_hash(tx)] = &tx;
+        }
+    }
+
+    bool b_success = false;
+    crypto::hash id = head;
+    for (auto it = block_index.find(id); block_index.end() != it; it = block_index.find(id))
+    {
+        blockchain.push_back(*it->second);
+        id = it->second->prev_id;
+        if (null_hash == id)
+        {
+            b_success = true;
+            break;
+        }
+    }
+    reverse(blockchain.begin(), blockchain.end());
+
+    return b_success;
+}
+
+
+void test_chain_unit_base::register_callback(const std::string& cb_name, verify_callback cb)
+{
+  m_callbacks[cb_name] = cb;
+}
+bool test_chain_unit_base::verify(const std::string& cb_name, cryptonote::core& c, size_t ev_index, const std::vector<test_event_entry> &events)
+{
+  auto cb_it = m_callbacks.find(cb_name);
+  if(cb_it == m_callbacks.end())
+  {
+    LOG_ERROR("Failed to find callback " << cb_name);
+    return false;
+  }
+  return cb_it->second(c, ev_index, events);
+}