public async Task ThrowExeptionWhenBookLendingIsNullRenewBook_Test()
{
var isbn = "TestIsbn";
var username = "******";
var days = 5;
var renewBookDto = new RenewBookDto();
var lendDto = new BaseTitleDto();
var options = TestUtilities.GetOptions(nameof(ThrowExeptionWhenBookLendingIsNullRenewBook_Test));
using (var actContext = new LibrarySystemContext(options))
{
var book = await actContext.Books.AddAsync(new Book { ISBN = isbn });
var user = await actContext.Users.AddAsync(new User { UserName = username });
await actContext.SaveChangesAsync();
renewBookDto.BookId = days;
renewBookDto.BookId = book.Entity.Id;
renewBookDto.UserId = user.Entity.Id;
}
using (var assertContext = new LibrarySystemContext(options))
{
var sut = new BookWebService(assertContext);
await sut.RenewBookAsync(renewBookDto);
var actuaDays = assertContext.BookLendings.Select(book => book.Date);
}
}
public async Task RenewBookAsync(RenewBookDto renewBookDto)
{
var book = await this.dbContext.Books.
FirstOrDefaultAsync(bRenew => bRenew.Id == renewBookDto.BookId);
var user = await this.dbContext.Users
.Include(uLend => uLend.BookLendings)
.SingleOrDefaultAsync(uName => uName.Id == renewBookDto.UserId);
var bookLending = await this.dbContext.BookLendings
.FirstOrDefaultAsync(bLending => bLending.BookId == book.Id &&
bLending.UserId == user.Id);
if (bookLending == null)
{
throw new BookException("The book has not beed lended by the current user!");
}
if (renewBookDto.Days > 10)
{
throw new BookException("You cannot renew book for more than 10 days.");
}
bookLending.Date.AddDays(renewBookDto.Days);
await this.dbContext.SaveChangesAsync();
}
public async Task <IActionResult> RenewBook(RenewBookViewModel vm)
{
try
{
var renewDto = new RenewBookDto
{
BookId = vm.BookId,
UserId = User.FindFirstValue(ClaimTypes.NameIdentifier),
Days = vm.Days
};
await this.service.RenewBookAsync(renewDto);
}
catch (BookException ex)
{
return(View("Message", new MessageViewModel {
Message = ex.Message
}));
}
return(View("Message", new MessageViewModel {
Message = $"The book was renewed successfully for {vm.Days} days!", IsSuccess = true
}));
}
