public void AddEvent_ReturningBookBookIsLent_AddsReturnBookEventAndChangesBookIsLentToFalse()
{
_bookCopiesInDataFiller[0].IsLent = true;
_repo = new DataRepository(new ConstDataFiller(books: _booksInDataFiller,
customers: _customersInDataFiller,
bookCopies: _bookCopiesInDataFiller,
events: _eventsInDataFiller));
var eve = new ReturnBookEvent(_bookCopiesInDataFiller[0], _customersInDataFiller[0], DateTime.Now);
_repo.AddEvent(eve);
Assert.AreEqual(false, _bookCopiesInDataFiller[0].IsLent);
Assert.AreEqual(true, _repo.GetAllEvents().Contains(eve));
}
public void AddEvent_ReturningBookIsNotLent_ExceptionThrown()
{
_repo = new DataRepository(new ConstDataFiller(books: _booksInDataFiller,
customers: _customersInDataFiller,
bookCopies: _bookCopiesInDataFiller,
events: _eventsInDataFiller));
var eve = new ReturnBookEvent(_bookCopiesInDataFiller[0],
_customersInDataFiller[0],
DateTime.ParseExact("22/03/2018", "dd/MM/yyyy", null));
Assert.ThrowsException <InvalidEventException>(
() => _repo.AddEvent(eve)
);
}
public void AddEvent_ReturningDamagedBookBookIsLent_ChangesBookStateToDamaged()
{
_bookCopiesInDataFiller[0].IsLent = true;
_repo = new DataRepository(new ConstDataFiller(books: _booksInDataFiller,
customers: _customersInDataFiller,
bookCopies: _bookCopiesInDataFiller,
events: _eventsInDataFiller));
var eve = new ReturnBookEvent(_bookCopiesInDataFiller[0], _customersInDataFiller[0], DateTime.Now, 20, PaymentCause.DamagedBook);
_repo.AddEvent(eve);
var actual = _bookCopiesInDataFiller[0].State;
Assert.AreEqual(BookCopy.States.Damaged, actual);
}
public void AddEvent_ReturningBookWithPositivePaymentAndNoCause_ExceptionThrown()
{
_bookCopiesInDataFiller[0].IsLent = true;
_repo = new DataRepository(new ConstDataFiller(books: _booksInDataFiller,
customers: _customersInDataFiller,
bookCopies: _bookCopiesInDataFiller,
events: _eventsInDataFiller));
var eve = new ReturnBookEvent(_bookCopiesInDataFiller[0],
_customersInDataFiller[0],
DateTime.Now,
20,
PaymentCause.None);
Assert.ThrowsException <InvalidEventException>(
() => _repo.AddEvent(eve)
);
}
public void ReturnDamagedBook(Customer customer, BookCopy bookCopy)
{
var price = bookCopy.BasePrice * (PaymentsModifiers[bookCopy.State] / 100.0);
var retunBook = new ReturnBookEvent(
bookCopy,
customer,
_dateProvider.Now(),
price,
PaymentCause.DamagedBook
);
try
{
_dataRepository.AddEvent(retunBook);
} catch (EventException e)
{
throw new DataServiceException(e);
}
}
private void IsValid(ReturnBookEvent returnBookEvent)
{
CheckBookEvent(returnBookEvent);
if (returnBookEvent.RequiredPayment < 0.0)
{
throw new InvalidEventException("Required payment cannot be negative number!");
}
if (returnBookEvent.RequiredPayment != 0.0 && returnBookEvent.Cause == PaymentCause.None)
{
throw new InvalidEventException("PaymentCause cannot be None if requiredPayment != 0!");
}
if (!returnBookEvent.Copy.IsLent)
{
throw new InvalidEventException("Cannot return book which is not lent");
}
var lastCorespondingLend = _dataContext.events
.AsEnumerable()
.Where(eve => eve is LendBookEvent)
.Cast <LendBookEvent>()
.Where(eve => eve.Copy == returnBookEvent.Copy && eve.Customer == returnBookEvent.Customer)
.OrderByDescending(eve => eve.Date)
.FirstOrDefault();
if (lastCorespondingLend == null)
{
throw new InvalidEventException("No coresponding lend event!");
}
else if (lastCorespondingLend.Date >= returnBookEvent.Date)
{
throw new InvalidEventException("Return date should after lend date!");
}
}
