public void CreateBinaryExpression()
        {
            IExpression leftExpression = new ConstantExpression(1);
            IExpression rightExpression = new ConstantExpression(2);
            BinaryExpression expression = new ArithmeticBinaryExpression(ArithmeticOperator.Add, leftExpression, rightExpression);

            Assert.IsTrue(expression.LeftExpression == leftExpression);
            Assert.IsTrue(expression.RightExpression == rightExpression);
        }
        private static object EvaluateArithmeticBinaryOperator(ArithmeticOperator operation, object left, object right)
        {
            IExpression expression = new ArithmeticBinaryExpression(operation, new ConstantExpression(left), new ConstantExpression(right));

            return expression.Evaluate(null);
        }