using System;

using Shouldly;

namespace LSED

{

    public class Program

    {

​

        public class Exer4

        {

        /*  

             <summary>

             Given a string, return a new string where "not " has been added to the front. 

             However, if the string already begins with "not", return the string unchanged. Note: use .equals() to compare 2 strings.

             notString("candy") → "not candy"

             notString("x") → "not x"

             notString("not bad") → "not bad"

             </summary>

        */

            public string notString(string str)

        {

            throw new NotImplementedException();

        }

     }

​

        public static void Main(string[] args)

        {

            Exer4 _Exer4 = new Exer4();

_Exer4.notString("candy").ShouldBe("not candy");Console.WriteLine("Test 1 Passed");

_Exer4.notString("x").ShouldBe("not x");Console.WriteLine("Test 2 Passed");

_Exer4.notString("not bad").ShouldBe("not bad");Console.WriteLine("Test 3 Passed");

_Exer4.notString("bad").ShouldBe("not bad");Console.WriteLine("Test 4 Passed");

_Exer4.notString("not").ShouldBe("not");    Console.WriteLine("Test 5 Passed");

_Exer4.notString("is not").ShouldBe("not is not");Console.WriteLine("Test 6 Passed");

_Exer4.notString("no").ShouldBe("not no");Console.WriteLine("Test 7 Passed");

​

            Console.WriteLine("All tests Passed Successfully");

        }

​

    }

}

​

​