public void HenteAlleBilerPaaParkeringspladsen_Ved_AlleBiler()
{
var parkingLot = A.Fake <IParkingLot>();
A.CallTo(() => parkingLot.Cars).Returns(A.CollectionOfDummy <ICar>(2));
var sut = new ParkingLotService(parkingLot);
var actual = sut.GetAllCars();
Assert.Equal(2, actual.Count);
}