Trivia.cs

using Xunit;

public class Tests
{
    [Fact]
    public void Meh()
    {
        int i = 0;
        foreach (var item in new Collection())
        {
            Console.WriteLine(item);
            i++;
            if (i > 3)
            {
                break;
            }
        }
    }
}

public class Collection 
{
    public Enumerator GetEnumerator()
    {
        return new Enumerator();
    }
}

public class Enumerator
{
    public bool MoveNext()
    {
        return true;
    }

    public object Current { get { return 4; } }
}