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/*
    This file is part of cpp-ethereum.

    cpp-ethereum is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    cpp-ethereum is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file checkRandomStateTest.cpp
 * @author Christoph Jentzsch <jentzsch.simulationsoftware@gmail.com>
 * @date 2015
 * Check a random test and return 0/1 for success or failure. To be used for efficiency in the random test simulation.
 */

#include <libdevcore/Common.h>
#include <libdevcore/Assertions.h>
#include <libdevcore/Exceptions.h>
#include <libdevcore/Log.h>
#include <libevm/VMFactory.h>
#include "TestHelper.h"
#include "vm.h"
#pragma GCC diagnostic ignored "-Wunused-parameter"

using namespace std;
using namespace json_spirit;
using namespace dev::test;
using namespace dev;

bool doStateTest(mValue& _v);

int main(int argc, char *argv[])
{
    g_logVerbosity = 0;
    bool ret = false;

    try
    {
        mValue v;
        string s;
        for (int i = 1; i < argc; ++i)
            s += argv[i];
        if (asserts(s.length() > 0))
        {
            cout << "Content of argument is empty\n";
            return 1;
        }
        read_string(s, v);
        ret = doStateTest(v);
    }
    catch (Exception const& _e)
    {
        cout << "Failed test with Exception: " << diagnostic_information(_e) << endl;
        ret = false;
    }
    catch (std::exception const& _e)
    {
        cout << "Failed test with Exception: " << _e.what() << endl;
        ret = false;
    }
    return ret;
}

bool doStateTest(mValue& _v)
{
    eth::VMFactory::setKind(eth::VMKind::JIT);

    for (auto& i: _v.get_obj())
    {
        mObject& o = i.second.get_obj();

        assert(o.count("env") > 0);
        assert(o.count("pre") > 0);
        assert(o.count("transaction") > 0);

        ImportTest importer(o, false);

        eth::State theState = importer.m_statePre;
        bytes output;

        try
        {
            output = theState.execute(lastHashes(importer.m_environment.currentBlock.number), importer.m_transaction).output;
        }
        catch (Exception const& _e)
        {
            cnote << "state execution did throw an exception: " << diagnostic_information(_e);
            theState.commit();
        }
        catch (std::exception const& _e)
        {
            cnote << "state execution did throw an exception: " << _e.what();
        }

        assert(o.count("post") > 0);
        assert(o.count("out") > 0);

        //checkOutput(output, o);
        int j = 0;
        if (o["out"].type() == array_type)
            for (auto const& d: o["out"].get_array())
            {
                if (asserts(output[j] == toInt(d)))
                {
                    cout << "Output byte [" << j << "] different!";
                    return 1;
                }
                ++j;
            }
        else if (o["out"].get_str().find("0x") == 0)
        {
            if (asserts(output == fromHex(o["out"].get_str().substr(2))))
                return 1;
        }
        else
        {
            if (asserts(output == fromHex(o["out"].get_str())))
                return 1;
        }

        //checkLog(theState.pending().size() ? theState.log(0) : LogEntries(), importer.m_environment.sub.logs);
        eth::LogEntries logs = theState.pending().size() ? theState.log(0) : eth::LogEntries();

        if (assertsEqual(logs.size(), importer.m_environment.sub.logs.size()))
            return 1;

        for (size_t i = 0; i < logs.size(); ++i)
        {
            if (assertsEqual(logs[i].address, importer.m_environment.sub.logs[i].address))
                return 1;
            if (assertsEqual(logs[i].topics, importer.m_environment.sub.logs[i].topics))
                return 1;
            if (asserts(logs[i].data == importer.m_environment.sub.logs[i].data))
                return 1;
        }

        // check addresses
#if ETH_FATDB
        auto expectedAddrs = importer.m_statePost.addresses();
        auto resultAddrs = theState.addresses();
        for (auto& expectedPair : expectedAddrs)
        {
            auto& expectedAddr = expectedPair.first;
            auto resultAddrIt = resultAddrs.find(expectedAddr);
            if (resultAddrIt == resultAddrs.end())
            {
                cout << "Missing expected address " << expectedAddr;
                return 1;
            }
            else
            {
                if (importer.m_statePost.balance(expectedAddr) !=  theState.balance(expectedAddr))
                {
                    cout << expectedAddr << ": incorrect balance " << theState.balance(expectedAddr) << ", expected " << importer.m_statePost.balance(expectedAddr);
                    return 1;
                }
                if (importer.m_statePost.transactionsFrom(expectedAddr) !=  theState.transactionsFrom(expectedAddr))
                {
                    cout << expectedAddr << ": incorrect txCount " << theState.transactionsFrom(expectedAddr) << ", expected " << importer.m_statePost.transactionsFrom(expectedAddr);
                    return 1;
                }
                if (importer.m_statePost.code(expectedAddr) != theState.code(expectedAddr))
                {
                    cout << expectedAddr << ": incorrect code";
                    return 1;
                }

                //checkStorage(importer.m_statePost.storage(expectedAddr), theState.storage(expectedAddr), expectedAddr);
                map<u256, u256> _resultStore = theState.storage(expectedAddr);

                for (auto&& expectedStorePair : importer.m_statePost.storage(expectedAddr))
                {
                    auto& expectedStoreKey = expectedStorePair.first;
                    auto resultStoreIt = _resultStore.find(expectedStoreKey);
                    if (resultStoreIt == _resultStore.end())
                    {
                        cout << expectedAddr << ": missing store key " << expectedStoreKey << endl;
                        return 1;
                    }
                    else
                    {
                        auto& expectedStoreValue = expectedStorePair.second;
                        auto& resultStoreValue = resultStoreIt->second;
                        if (asserts(expectedStoreValue == resultStoreValue))
                        {
                            cout << expectedAddr << ": store[" << expectedStoreKey << "] = " << resultStoreValue << ", expected " << expectedStoreValue << endl;
                            return 1;
                        }
                    }
                }
                if (assertsEqual(_resultStore.size(), importer.m_statePost.storage(expectedAddr).size()))
                    return 1;
                for (auto&& resultStorePair: _resultStore)
                {
                    if (!importer.m_statePost.storage(expectedAddr).count(resultStorePair.first))
                    {
                        cout << expectedAddr << ": unexpected store key " << resultStorePair.first << endl;
                        return 1;
                    }
                }
            }
        }
        //checkAddresses<map<Address, u256> >(expectedAddrs, resultAddrs);
        for (auto& resultPair : resultAddrs)
        {
            auto& resultAddr = resultPair.first;
            auto expectedAddrIt = expectedAddrs.find(resultAddr);
            if (expectedAddrIt == expectedAddrs.end())
                return 1;
        }
        if (expectedAddrs != resultAddrs)
            return 1;
#endif
        if (theState.rootHash() != h256(o["postStateRoot"].get_str()))
        {
            cout << "wrong post state root" << endl;
            return 1;
        }
    }
    return 0;
}