public void GetHostAt_GivenIndex0()
        {
            //ARRANGE
            DateTime DateOfBirth = new DateTime(1990, 06, 01);
            Host     newHost     = new Host("Oktay", "Çelik", DateOfBirth);
            HostCollection <Host> HostCollection = new HostCollection <Host>();

            HostCollection.Add(newHost);
            Host Expected = newHost;
            //ACT
            Host Actual = HostCollection.GetHostAt(0);

            //ASSERT
            Assert.AreEqual(Expected, Actual);
        }