def test_cannot_save_empty_book_details(self):
list_of_books = ListfOfBooks.objects.create()
book = Book()
book.title = "" # empty book detail (title)
book.current_page = 6
book.total_pages = 344
book.list_of_books = list_of_books
with self.assertRaises(ValidationError):
book.save()
book.full_clean() # fully checks empty value in TextField.
def test_can_save_the_same_book_to_different_list(self):
list_of_books_first = ListfOfBooks.objects.create()
list_of_books_second = ListfOfBooks.objects.create()
Book.objects.create(
list_of_books=list_of_books_first,
title='Duplicate',
current_page=10,
total_pages=25,
)
book = Book(
list_of_books=list_of_books_second,
title='Duplicate',
current_page=10,
total_pages=25,
)
book.full_clean()
def test_duplicate_books_are_invalid(self):
list_of_books = ListfOfBooks.objects.create()
Book.objects.create(
list_of_books=list_of_books,
title='Duplicate',
current_page=10,
total_pages=25,
)
with self.assertRaises(ValidationError):
book = Book(
list_of_books=list_of_books,
title='Duplicate',
current_page=10,
total_pages=25,
)
book.full_clean()
