// configure the editor to reference the following packages:

// * NUnit

// * NUnitLite

​

// Shortcut for .Net Fiddle:

// @nuget: NUnit

// @nuget: NUnitLite

​

using NUnit.Framework;

using Assert = NUnit.Framework.Legacy.ClassicAssert;

​

public class CalculatorTests

{

    [Test]

    public void Add_WhenCalledWithTwoIntegers_ReturnsTheirSum()

    {

        // Arrange

        var calculator = new Calculator();

​

        // Act

        var result = calculator.Add(2, 3);

​

        // Assert

        Assert.AreEqual(5, result);

    }

​

    private class Calculator

    {

        public int Add(int a, int b)

        {

            return a + b;

        }

    }

}

​

public class Program

{

    public static void Main()

    {

        new NUnitLite.AutoRun().Execute(["--noc" /*no colored output for .Net Fiddle*/]);

    }

}