public void CanPromoteBookRanking()
{
var options = new DbContextOptionsBuilder <ReadingListApiContext>()
.UseInMemoryDatabase("can_promote_book_ranking")
.Options;
using (var context = new ReadingListApiContext(options))
{
ReadingList readingList = new ReadingListFixture().ReadingList();
context.Add(readingList);
context.SaveChanges();
Book book1 = readingList.Books[0];
Book book2 = readingList.Books[1];
Book book3 = readingList.Books[2];
readingList.UpdateRankings(book3.BookId, 2);
Assert.Equal(1, book1.Ranking);
Assert.Equal(3, book2.Ranking);
Assert.Equal(2, book3.Ranking);
}
}