using System;

using System.Collections.Generic;

using System.Linq;

​

public class TestRunner

{

    public static void Main()

    {

        var cTests = new CalculatorTests();

​

        var failedTests = new List<string>();

​

        // using reflection, run every test method and record the names of those methods that fail

        foreach (var m in typeof(CalculatorTests).GetMethods()

                                                  .Where(m => m.DeclaringType != typeof(object)))

        {

            if (Convert.ToBoolean(m.Invoke(cTests, null)) != true)

                failedTests.Add(m.Name);

        }

​

        // display all the failed tests, or a message that everything passed

        if (failedTests.Any())

            Console.WriteLine("Failed Tests: \r\n\r\n{0}", string.Join("\r\n", failedTests));

        else

            Console.WriteLine("All tests passed!");

​

        Console.ReadLine();

    }

}

public class Calculator

{

    public decimal Divide(decimal dividend, decimal divisor)

    {

        return dividend / divisor;

    }

}

​

public class CalculatorTests

{

    Calculator c = new Calculator();

​

    public bool Is6DividedBy3EqualTo2()

    {

        // change these values to see the test fail

        var quotient = c.Divide(6, 3);

​

        if (quotient == 2)

            return true;

        else

            return false;

    }

​

    public bool Is9DividedBy2EqualTo4Point5()

    {

        // change these values to see the test fail

        var quotient = c.Divide(9, 2);

​

        if (quotient == 4.5m)

            return true;

        else

            return false;

    }

}

​