using System;

using NUnit.Framework;

using System.Collections.Generic;

​

namespace LS{

public class Program

{

    public static void Main() 

    {

        var x = new NUnitLite.AutoRun().Execute(new string[]{"--test:LS.CalculateOccuranceTests", "--noc"});

        Console.WriteLine("");

        Console.WriteLine("----------------------------------------------");

        Console.WriteLine(x==0?"All Test Passed... :¬)": string.Format("{0} tests failed... :¬(", x));

        Console.WriteLine("----------------------------------------------");

    }

}

​

    [TestFixture]

    public class CalculateOccuranceTests

    {

        [TestCase(8,"2022-01-10" ,"2022-01-27",2,3,5 )]

        public void OccuranceTest(int expected,DateTime startDate, DateTime endDate, params int[] numbers)

        {

            //Setup

            List<int> daysofWeek = new List<int>();

            foreach (var item in numbers)

            {

                daysofWeek.Add(item);

            }

            //act

            var act = CalculateDaysToSessions( startDate, endDate, daysofWeek);

            //Assert

            Assert.AreEqual(expected,act.Count);

        }

​

​

        public List<DateTime> CalculateDaysToSessions(DateTime startDate, DateTime enddate, List<int> daysOfWeek)

        {

            List<DateTime> dates = new List<DateTime>();

            DateTime date = new DateTime();

            date = startDate;

​

            while (date <= enddate)

            {

                if (date > enddate) date = date.AddDays(-1); //brake out of the loop if the date + 1 exceeds the end date

                 if (daysOfWeek.Contains((int)date.DayOfWeek))

                {

                    dates.Add(date);

                }

                  date = date.AddDays(1);           

            }

            return dates;

​

        }

​

}

​

}

​