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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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Framework for executing Solidity contracts and testing them against C++ implementation.
*/
#pragma once
#include <string>
#include <tuple>
#include "../TestHelper.h"
#include <libethereum/State.h>
#include <libethereum/Executive.h>
#include <libsolidity/CompilerStack.h>
namespace dev
{
namespace solidity
{
namespace test
{
class ExecutionFramework
{
public:
ExecutionFramework() { g_logVerbosity = 0; }
bytes const& compileAndRunWithoutCheck(
std::string const& _sourceCode,
u256 const& _value = 0,
std::string const& _contractName = "",
bytes const& _arguments = bytes()
)
{
m_compiler.reset(false, m_addStandardSources);
m_compiler.addSource("", _sourceCode);
ETH_TEST_REQUIRE_NO_THROW(m_compiler.compile(m_optimize, m_optimizeRuns), "Compiling contract failed");
bytes code = m_compiler.getBytecode(_contractName);
sendMessage(code + _arguments, true, _value);
return m_output;
}
bytes const& compileAndRun(
std::string const& _sourceCode,
u256 const& _value = 0,
std::string const& _contractName = "",
bytes const& _arguments = bytes()
)
{
compileAndRunWithoutCheck(_sourceCode, _value, _contractName, _arguments);
BOOST_REQUIRE(!m_output.empty());
return m_output;
}
template <class... Args>
bytes const& callContractFunctionWithValue(std::string _sig, u256 const& _value, Args const&... _arguments)
{
FixedHash<4> hash(dev::sha3(_sig));
sendMessage(hash.asBytes() + encodeArgs(_arguments...), false, _value);
return m_output;
}
template <class... Args>
bytes const& callContractFunction(std::string _sig, Args const&... _arguments)
{
return callContractFunctionWithValue(_sig, 0, _arguments...);
}
template <class CppFunction, class... Args>
void testSolidityAgainstCpp(std::string _sig, CppFunction const& _cppFunction, Args const&... _arguments)
{
bytes solidityResult = callContractFunction(_sig, _arguments...);
bytes cppResult = callCppAndEncodeResult(_cppFunction, _arguments...);
BOOST_CHECK_MESSAGE(
solidityResult == cppResult,
"Computed values do not match.\nSolidity: " +
toHex(solidityResult) +
"\nC++: " +
toHex(cppResult));
}
template <class CppFunction, class... Args>
void testSolidityAgainstCppOnRange(std::string _sig, CppFunction const& _cppFunction, u256 const& _rangeStart, u256 const& _rangeEnd)
{
for (u256 argument = _rangeStart; argument < _rangeEnd; ++argument)
{
bytes solidityResult = callContractFunction(_sig, argument);
bytes cppResult = callCppAndEncodeResult(_cppFunction, argument);
BOOST_CHECK_MESSAGE(
solidityResult == cppResult,
"Computed values do not match.\nSolidity: " +
toHex(solidityResult) +
"\nC++: " +
toHex(cppResult) +
"\nArgument: " +
toHex(encode(argument))
);
}
}
static bytes encode(bool _value) { return encode(byte(_value)); }
static bytes encode(int _value) { return encode(u256(_value)); }
static bytes encode(char const* _value) { return encode(std::string(_value)); }
static bytes encode(byte _value) { return bytes(31, 0) + bytes{_value}; }
static bytes encode(u256 const& _value) { return toBigEndian(_value); }
static bytes encode(h256 const& _value) { return _value.asBytes(); }
static bytes encode(bytes const& _value, bool _padLeft = true)
{
bytes padding = bytes((32 - _value.size() % 32) % 32, 0);
return _padLeft ? padding + _value : _value + padding;
}
static bytes encode(std::string const& _value) { return encode(asBytes(_value), false); }
template <class FirstArg, class... Args>
static bytes encodeArgs(FirstArg const& _firstArg, Args const&... _followingArgs)
{
return encode(_firstArg) + encodeArgs(_followingArgs...);
}
static bytes encodeArgs()
{
return bytes();
}
private:
template <class CppFunction, class... Args>
auto callCppAndEncodeResult(CppFunction const& _cppFunction, Args const&... _arguments)
-> typename std::enable_if<std::is_void<decltype(_cppFunction(_arguments...))>::value, bytes>::type
{
_cppFunction(_arguments...);
return bytes();
}
template <class CppFunction, class... Args>
auto callCppAndEncodeResult(CppFunction const& _cppFunction, Args const&... _arguments)
-> typename std::enable_if<!std::is_void<decltype(_cppFunction(_arguments...))>::value, bytes>::type
{
return encode(_cppFunction(_arguments...));
}
protected:
void sendMessage(bytes const& _data, bool _isCreation, u256 const& _value = 0)
{
m_state.addBalance(m_sender, _value); // just in case
eth::Executive executive(m_state, eth::LastHashes(), 0);
eth::ExecutionResult res;
executive.setResultRecipient(res);
eth::Transaction t =
_isCreation ?
eth::Transaction(_value, m_gasPrice, m_gas, _data, 0, KeyPair::create().sec()) :
eth::Transaction(_value, m_gasPrice, m_gas, m_contractAddress, _data, 0, KeyPair::create().sec());
bytes transactionRLP = t.rlp();
try
{
// this will throw since the transaction is invalid, but it should nevertheless store the transaction
executive.initialize(&transactionRLP);
executive.execute();
}
catch (...) {}
if (_isCreation)
{
BOOST_REQUIRE(!executive.create(m_sender, _value, m_gasPrice, m_gas, &_data, m_sender));
m_contractAddress = executive.newAddress();
BOOST_REQUIRE(m_contractAddress);
BOOST_REQUIRE(m_state.addressHasCode(m_contractAddress));
}
else
{
BOOST_REQUIRE(m_state.addressHasCode(m_contractAddress));
BOOST_REQUIRE(!executive.call(m_contractAddress, m_sender, _value, m_gasPrice, &_data, m_gas));
}
BOOST_REQUIRE(executive.go(/* DEBUG eth::Executive::simpleTrace() */));
m_state.noteSending(m_sender);
executive.finalize();
m_gasUsed = res.gasUsed;
m_output = std::move(res.output);
m_logs = executive.logs();
}
size_t m_optimizeRuns = 200;
bool m_optimize = false;
bool m_addStandardSources = false;
dev::solidity::CompilerStack m_compiler;
Address m_sender;
Address m_contractAddress;
eth::State m_state;
u256 const m_gasPrice = 100 * eth::szabo;
u256 const m_gas = 100000000;
bytes m_output;
eth::LogEntries m_logs;
u256 m_gasUsed;
};
}
}
} // end namespaces
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