public void GetNumberOfDogsInShelterTest()
        {
            var    shelter = new ShelterRepository(1);
            Rabbit rabbit  = new Rabbit {
                Name = "rabbit", AgeInHumanYears = 2
            };
            //shelter.AddAnimal(rabbit);
            var expected = 0;
            var actual   = shelter.GetNumberOfDogsInShelter();

            Assert.AreEqual(expected, actual);
        }