public void Can_Create_ReserveBilling()
        {
            // Arrange

            // Act
            ReserveBilling reserveBilling = new ReserveBilling(23, buildingManager);

            // Assert
            Assert.IsNotNull(reserveBilling);
        }
        public void Can_Create_ReserveBill()
        {
            // Arrange
            ReserveBilling reserveBilling = new ReserveBilling(23,buildingManager);

            // Act
            Bill bill = reserveBilling.IssueReserveBillFor(apartment);

            // Assert
            Assert.AreEqual(94.095m, bill.TotalAmountWithTax);
        }