public void TestBookDelete()
{
var options = new DbContextOptionsBuilder <MusicSpotDbContext>().UseInMemoryDatabase("bookDelete").Options;
var dbContext = new MusicSpotDbContext(options);
var service = new BookService(dbContext);
var book = new Book
{
Id = 1,
Title = "It",
Genre = "Horror",
ImageUrl = "aaa",
Description = "some description",
UserId = "aaa"
};
dbContext.Books.Add(book);
dbContext.SaveChanges();
var result = service.Delete(1);
Assert.AreEqual(result, true);
Assert.AreEqual(service.BookExist(1), false);
Assert.AreNotEqual(result, false);
Assert.That(book.Id, Is.Not.Null);
}