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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 TestUtils.h
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+#pragma once
+
+#include <functional>
+#include <string>
+#include <json/json.h>
+#include <libdevcore/TransientDirectory.h>
+#include <libethereum/BlockChain.h>
+#include <libethereum/ClientBase.h>
+
+namespace dev
+{
+namespace test
+{
+
+// should be used for multithread tests
+static SharedMutex x_boostTest;
+#define ETH_CHECK_EQUAL(x, y) { dev::WriteGuard(x_boostTest); BOOST_CHECK_EQUAL(x, y); }
+#define ETH_CHECK_EQUAL_COLLECTIONS(xb, xe, yb, ye) { dev::WriteGuard(x_boostTest); BOOST_CHECK_EQUAL_COLLECTIONS(xb, xe, yb, ye); }
+#define ETH_REQUIRE(x) { dev::WriteGuard(x_boostTest); BOOST_REQUIRE(x); }
+
+struct LoadTestFileFixture
+{
+	LoadTestFileFixture();
+
+protected:
+	Json::Value m_json;
+};
+
+struct ParallelFixture
+{
+	void enumerateThreads(std::function<void()> callback) const;
+};
+
+struct BlockChainFixture: public LoadTestFileFixture
+{
+	void enumerateBlockchains(std::function<void(Json::Value const&, dev::eth::BlockChain const&, dev::eth::State state)> callback) const;
+};
+
+struct ClientBaseFixture: public BlockChainFixture
+{
+	void enumerateClients(std::function<void(Json::Value const&, dev::eth::ClientBase&)> callback) const;
+};
+
+// important BOOST TEST do have problems with thread safety!!!
+// BOOST_CHECK is not thread safe
+// BOOST_MESSAGE is not thread safe
+// http://boost.2283326.n4.nabble.com/Is-boost-test-thread-safe-td3471644.html
+// http://lists.boost.org/boost-users/2010/03/57691.php
+// worth reading
+// https://codecrafter.wordpress.com/2012/11/01/c-unit-test-framework-adapter-part-3/
+struct ParallelClientBaseFixture: public ClientBaseFixture, public ParallelFixture
+{
+	void enumerateClients(std::function<void(Json::Value const&, dev::eth::ClientBase&)> callback) const;
+};
+
+struct JsonRpcFixture: public ClientBaseFixture
+{
+	
+};
+
+}
+}