public void Should_Calculate_Time_Spent_On_ParkingSpace()
{
var parkingSpace = new ParkingSpace(ParkingSpaceType.Car);
parkingSpace.Occupy(2);
Thread.Sleep(2000); //2seg
parkingSpace.Release();
var expected = (double)2000 / 60000; //ms to min
Assert.Equal(expected.ToString("0.##"),
parkingSpace.CalculateTimeSpent().ToString("0.##"));
}