def test_charges3_novel_greater_than_min_days():
book = Book(return_date=date.today() + timedelta(days=4))
book.book_type = "NOVEL"
assert book.charges3 == 6
def test_charges3_fiction_1_days():
book = Book(return_date=date.today() + timedelta(days=1))
book.book_type = "FICTION"
assert book.charges3 == 3
def test_charges3_novel_less_than_min_days():
book = Book()
book.book_type = "NOVEL"
assert book.charges3 == 4.5
