FullnameConverter.cs

public class Klient
{
	public string Vorname {
		get;
		set;
	}

	public string Nachname {
		get;
		set;
	}
}


public class FullnameConverter
{
	public string ConvertToFullname(Klient klient)
	{
		return klient.Vorname + " " + klient.Nachname;
	}
}

[TestFixture]
public class KlientTest
{
	[Test]
	public void Fullname()
	{
		string expected = "Max Mustermann";

		Klient klient = new Klient () {
			Vorname = "Max",
			Nachname = "Mustermann"
		};

		FullnameConverter converter = new FullnameConverter ();

		Assert.AreEqual (expected,converter.ConvertToFullname(klient));
	}
}