using System;

using System.Reflection;

using System.Collections.Generic;

using System.Linq;

using Microsoft.VisualStudio.TestTools.UnitTesting;

​

public class StudentScore

{

    public string Name {get;set;}

    public int? Score {get;set;}

}

​

public class StudentGrader

{

    public string Grade(StudentScore studentScore)

    {

        if(studentScore.Score > 90) return "A";

        if(studentScore.Score > 80) return "B";

        if(studentScore.Score > 70) return "C";

        if(studentScore.Score > 60) return "D";

        return "F";

    }

}

​

[TestClass]

public class StudentScoreTests

{

    [TestMethod]

    public void TodoTest()

    {

        Assert.Inconclusive("Not implemented");

    }

}

​

​

​

​

​

​

​

​

//* IGNORE - Simple Test runner

public class Program

{

    public static void Main()

    {

        var testMethods =

            typeof(StudentScoreTests).GetMethods()

                .Where(m => m.GetCustomAttribute<TestMethodAttribute>() != null);

​

        foreach (var testMethod in testMethods)

        {

            var instance = new StudentScoreTests();

            try

            {

                Console.Write($"{testMethod.Name}: ");

                testMethod.Invoke(instance, null);

                Console.WriteLine($"PASSED");

            }

            catch (Exception ex)

            {

                var message = ex.InnerException?.Message ?? ex.Message;

                switch (ex.InnerException)

                {

                    case AssertFailedException:

                        Console.WriteLine($"Failed - {message}");

                        break;

                    case AssertInconclusiveException:

                        Console.WriteLine($"Inconclusive - {message}");

                        break;

                    default:

                        Console.WriteLine($"Exception - {message}");

                        break;

                }

            }

        }

    }

}