Test from Writer

A test post from Writer

using System;
using System.Collections.Generic;
using System.Text;
using Calculator.Model;

namespace Calculator
{
    /// 

    /// Math calculator.
    /// 
    internal class MathCalculator : IMathCalculator
    {
        /// 

        /// Creates a new instance of MathCalculator class.
        /// 
        internal MathCalculator()
        {
        }

        #region IMathCalculator Members

        /// 

        /// Calculates given equation and returns the result.
        /// 
        /// The equation to calculate.</param>
        /// The result of the given equation.
        public decimal Calculate(IMathEquation equation)
        {
            if (equation == null) throw new ArgumentNullException("equation");

            decimal result = 0;

            IMathValue resultValue = equation.Solve() as IMathValue;

            if (resultValue != null)
            {
                result = resultValue.Value;
            }

            return result;
        }

        #endregion
    }
}