public async Task <BookDiscount> CreateBookDiscount(DateTime expireDate, decimal discountPercentage, int bookInfoId)
{
var bookDiscount = new BookDiscount()
{
ExpireDate = expireDate,
DiscountPercentage = discountPercentage,
BookInfoId = bookInfoId
};
await Set <BookDiscount>()
.AddAsync(bookDiscount);
await SaveChangesAsync();
return(bookDiscount);
}
public void BookDiscountCtorTest()
{
List <Genre> genres1 = new List <Genre> {
new Genre("fantasy")
};
BookInfo bookInfo1 = new BookInfo("Harry Potter and the Chamber of Secrets", "J.K.Rowling", genres1);
decimal cost = 500.1m;
DateTime arriveDate = DateTime.Today.Date;
Book book = new Book(bookInfo1, cost, arriveDate);
var expireDate = DateTime.Today.AddDays(1000).Date;
Discount discount = new BookDiscount(expireDate, 80, bookInfo1);
discount.ExpireDate.Should().Be(expireDate);
}
public static Discounter Discounter()
{
IDiscount twoBookDiscount = new BookDiscount(2, 5);
IDiscount threeBookDiscount = new BookDiscount(3, 10);
IDiscount fourBookDiscount = new BookDiscount(4, 20);
IDiscount fiveBookDiscount = new BookDiscount(5, 25);
IEnumerable <IDiscount> discounts = new List <IDiscount> {
twoBookDiscount, threeBookDiscount, fourBookDiscount, fiveBookDiscount
};
var discounter = new Discounter(discounts, 8M, 5);
return(discounter);
}
public void BookDiscountApplyDiscountTest()
{
List <Genre> genres1 = new List <Genre> {
new Genre("fantasy")
};
BookInfo bookInfo1 = new BookInfo("Harry Potter and the Chamber of Secrets", "J.K.Rowling", genres1);
decimal cost = 500.11m;
Book book1 = new Book(bookInfo1, cost, DateTime.Today.Date);
List <Genre> genres2 = new List <Genre> {
new Genre("other")
};
BookInfo bookInfo2 = new BookInfo("One Flew Over the Cuckoo's Nest", " Ken Kesey", genres2);
Book book2 = new Book(bookInfo2, 600m, DateTime.Today.AddDays(-110));
var expireDate = DateTime.Today.AddDays(1000).Date;
Discount discount = new BookDiscount(expireDate, 80, bookInfo1);
discount.ApplyDiscount(book1, DateTime.Today.Date).Cost.Should().Be(100.02m);
discount.ApplyDiscount(book1, DateTime.Today.AddDays(1001).Date).Cost.Should().Be(book1.Cost);
discount.ApplyDiscount(book2, DateTime.Today.Date).Cost.Should().Be(book2.Cost);
}
