private Prize PrizeSomeBooks(CollectionBooks bookList, Prize price = null)
{
if (price == null)
{
price = new Prize(0);
}
if (bookList == null || !bookList.Any())
{
return(price);
}
//separamos los libros en lista de libros distintos
var newBookCol = new CollectionBooks();
foreach (var book in bookList.GetCollectionBooks())
{
if (!newBookCol.HasBook(book))
{
newBookCol.AddBook(book.Clone());
}
}
//aplicamos el descuento a un grupo de libros distintos
ApplyDiscount(newBookCol, _colDiscountRules);
//sumamos los precios de los libros con los descuentos
price = price.AddPriceBook(newBookCol.SumPrize());
//eliminamos los libros que ya hemos procesado
var colRemovedProcesed = bookList.RemoveCollection(newBookCol);
//recursividad con libros que faltan por procesar y el precio acumulado
return(PrizeSomeBooks(colRemovedProcesed, price));
}
private void ApplyDiscount(CollectionBooks bookList, CollectionDiscountRules _colDiscountRules)
{
var numBooksDistinct = bookList.NumBooksDistinct();
var discount = _colDiscountRules.GetDiscountRuleByNumBooks(numBooksDistinct);
bookList.ApplyDiscount(discount);
}
public void TestBookByType(int idBook)
{
var bookList = new CollectionBooks();
var book = new Book(idBook, prizeConstant);
bookList.AddBook(book);
Assert.Equal(new Prize(8), potterService.PrizeBooks(bookList));
}
public Prize PrizeBooks(CollectionBooks bookList)
{
if (bookList.Any())
{
return(PrizeSomeBooks(bookList));
}
return(new Prize(0));
}
public void TestZeroZeroOne()
{
var bookList = new CollectionBooks();
var bookZero = new Book(0, prizeConstant);
bookList.AddBook(bookZero);
bookList.AddBook(bookZero);
var bookOne = new Book(1, prizeConstant);
bookList.AddBook(bookOne);
Assert.Equal(new Prize(8 + (8 * 2 * 0.95)), potterService.PrizeBooks(bookList));
}
public void TestBookCollection(int idBook, int numTimes)
{
var bookList = new CollectionBooks();
var bookType = new Book(idBook, prizeConstant);
for (var i = 0; i < numTimes; i++)
{
bookList.AddBook(bookType);
}
var prize = new Prize(8 * numTimes);
Assert.Equal(prize, potterService.PrizeBooks(bookList));
}
public void TestDiscountTreeDistinctBooks()
{
var bookList = new CollectionBooks();
var book1 = new Book(0, prizeConstant);
bookList.AddBook(book1);
var book2 = new Book(2, prizeConstant);
bookList.AddBook(book2);
var book4 = new Book(4, prizeConstant);
bookList.AddBook(book4);
Assert.Equal(new Prize(8 * 3 * 0.9), potterService.PrizeBooks(bookList));
}
public void TestNoneBook()
{
var bookList = new CollectionBooks();
Assert.Equal(new Prize(0), potterService.PrizeBooks(bookList));
}
