Remove unused tests and add asserts for not implemented parts in code generation.

quick fix on christian's rational

change so that ubuntu will stop yelling

be more specific with rational declaration for Windows sake

rational in namespace correction for windows

libsolidity/codegen/ExpressionCompiler.cpp

@@ -281,10 +281,6 @@ bool ExpressionCompiler::visit(TupleExpression const& _tuple)
 bool ExpressionCompiler::visit(UnaryOperation const& _unaryOperation)
 {
 	CompilerContext::LocationSetter locationSetter(m_context, _unaryOperation);
-	//@todo type checking and creating code for an operator should be in the same place:
-	// the operator should know how to convert itself and to which types it applies, so
-	// put this code together with "Type::acceptsBinary/UnaryOperator" into a class that
-	// represents the operator
 	if (_unaryOperation.annotation().type->category() == Type::Category::RationalNumber)
 	{
 		m_context << _unaryOperation.annotation().type->literalValue(nullptr);
@@ -1306,6 +1302,9 @@ void ExpressionCompiler::appendArithmeticOperatorCode(Token::Value _operator, Ty
 	IntegerType const& type = dynamic_cast<IntegerType const&>(_type);
 	bool const c_isSigned = type.isSigned();
 
+	if (_type.category() == Type::Category::FixedPoint)
+		solAssert(false, "Not yet implemented - FixedPointType.");
+
 	switch (_operator)
 	{
 	case Token::Add: