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diff --git a/test/TestCase.h b/test/TestCase.h
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+/*
+	This file is part of solidity.
+
+	solidity 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.
+
+	solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include <boost/filesystem.hpp>
+
+#include <iosfwd>
+#include <memory>
+#include <string>
+
+namespace dev
+{
+namespace solidity
+{
+namespace test
+{
+
+/** Common superclass of SyntaxTest and SemanticsTest. */
+class TestCase
+{
+public:
+	using TestCaseCreator = std::unique_ptr<TestCase>(*)(std::string const&);
+
+	virtual ~TestCase() {}
+
+	/// Runs the test case.
+	/// Outputs error messages to @arg _stream. Each line of output is prefixed with @arg _linePrefix.
+	/// Optionally, color-coding can be enabled (if @arg _formatted is set to true).
+	/// @returns true, if the test case succeeds, false otherwise
+	virtual bool run(std::ostream& _stream, std::string const& _linePrefix = "", bool const _formatted = false) = 0;
+
+	/// Outputs the test contract to @arg _stream.
+	/// Each line of output is prefixed with @arg _linePrefix.
+	/// If @arg _formatted is true, color-coding may be used to indicate
+	/// error locations in the contract, if applicable.
+	virtual void printSource(std::ostream &_stream, std::string const &_linePrefix = "", bool const _formatted = false) const = 0;
+	/// Outputs test expectations to @arg _stream that match the actual results of the test.
+	/// Each line of output is prefixed with @arg _linePrefix.
+	virtual void printUpdatedExpectations(std::ostream& _stream, std::string const& _linePrefix) const = 0;
+
+	static bool isTestFilename(boost::filesystem::path const& _filename);
+
+protected:
+	static std::string parseSource(std::istream& _file);
+	static void expect(std::string::iterator& _it, std::string::iterator _end, std::string::value_type _c);
+
+	template<typename IteratorType>
+	static void skipWhitespace(IteratorType& _it, IteratorType _end)
+	{
+		while (_it != _end && isspace(*_it))
+			++_it;
+	}
+
+	template<typename IteratorType>
+	static void skipSlashes(IteratorType& _it, IteratorType _end)
+	{
+		while (_it != _end && *_it == '/')
+			++_it;
+	}
+
+};
+
+}
+}
+}