Some (few) tests for the optimizer.

1 files changed, 161 insertions, 0 deletions

diff --git a/solidityExecutionFramework.h b/solidityExecutionFramework.h
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+++ b/solidityExecutionFramework.h
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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 <boost/test/unit_test.hpp>
+#include <libethereum/State.h>
+#include <libethereum/Executive.h>
+#include <libsolidity/CompilerStack.h>
+
+namespace dev
+{
+/// Provides additional overloads for toBigEndian to encode arguments and return values.
+inline bytes toBigEndian(byte _value) { return bytes({_value}); }
+inline bytes toBigEndian(bool _value) { return bytes({byte(_value)}); }
+
+namespace solidity
+{
+namespace test
+{
+
+class ExecutionFramework
+{
+public:
+	ExecutionFramework() { g_logVerbosity = 0; }
+
+	bytes const& compileAndRun(std::string const& _sourceCode, u256 const& _value = 0, std::string const& _contractName = "")
+	{
+		dev::solidity::CompilerStack compiler;
+		compiler.compile(_sourceCode, m_optimize);
+		bytes code = compiler.getBytecode(_contractName);
+		sendMessage(code, true, _value);
+		BOOST_REQUIRE(!m_output.empty());
+		return m_output;
+	}
+
+	bytes const& callContractFunction(byte _index, bytes const& _data = bytes(), u256 const& _value = 0)
+	{
+		sendMessage(bytes(1, _index) + _data, false, _value);
+		return m_output;
+	}
+
+	template <class... Args>
+	bytes const& callContractFunction(byte _index, Args const&... _arguments)
+	{
+		return callContractFunction(_index, argsToBigEndian(_arguments...));
+	}
+
+	template <class CppFunction, class... Args>
+	void testSolidityAgainstCpp(byte _index, CppFunction const& _cppFunction, Args const&... _arguments)
+	{
+		bytes solidityResult = callContractFunction(_index, _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(byte _index, CppFunction const& _cppFunction,
+									   u256 const& _rangeStart, u256 const& _rangeEnd)
+	{
+		for (u256 argument = _rangeStart; argument < _rangeEnd; ++argument)
+		{
+			bytes solidityResult = callContractFunction(_index, argument);
+			bytes cppResult = callCppAndEncodeResult(_cppFunction, argument);
+			BOOST_CHECK_MESSAGE(solidityResult == cppResult, "Computed values do not match."
+								"\nSolidity: " + toHex(solidityResult) + "\nC++:      " + toHex(cppResult) +
+								"\nArgument: " + toHex(toBigEndian(argument)));
+		}
+	}
+
+private:
+	template <class FirstArg, class... Args>
+	bytes argsToBigEndian(FirstArg const& _firstArg, Args const&... _followingArgs) const
+	{
+		return toBigEndian(_firstArg) + argsToBigEndian(_followingArgs...);
+	}
+
+	bytes argsToBigEndian() const { 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
+	{
+		_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 toBigEndian(_cppFunction(_arguments...));
+	}
+
+	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::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.setup(&transactionRLP);
+		}
+		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, m_sender));
+		}
+		BOOST_REQUIRE(executive.go());
+		m_state.noteSending(m_sender);
+		executive.finalize();
+		m_output = executive.out().toVector();
+	}
+
+protected:
+	bool m_optimize = false;
+	Address m_sender;
+	Address m_contractAddress;
+	eth::State m_state;
+	u256 const m_gasPrice = 100 * eth::szabo;
+	u256 const m_gas = 1000000;
+	bytes m_output;
+};
+
+}
+}
+} // end namespaces
+