public void DoesMethodReturnZeroWhenUserHasZeroBooks()
{
options = new DbContextOptionsBuilder <FancyLibraryContext>()
.UseInMemoryDatabase(databaseName: "fancy_library_books_count_zero")
.Options;
db = new FancyLibraryContext(options);
services = new UserBookServices(db);
db.Books.AddRange(FillBooks());
db.UsersBooks.AddRange(FillUsersBooks());
db.Users.AddRange(FillUsers());
db.SaveChanges();
User user = db.Users.Last();
Assert.That(0, Is.EqualTo(services.GetUserBooksCount(user)));
}
public void IsFindingCorrectCountWhenUserHasMoreThanZeroBook()
{
options = new DbContextOptionsBuilder <FancyLibraryContext>()
.UseInMemoryDatabase(databaseName: "fancy_library_books_count_four")
.Options;
db = new FancyLibraryContext(options);
services = new UserBookServices(db);
db.Books.AddRange(FillBooks());
db.UsersBooks.AddRange(FillUsersBooks());
db.Users.AddRange(FillUsers());
db.SaveChanges();
User user = db.Users.First();
Assert.That(4, Is.EqualTo(services.GetUserBooksCount(user)));
}