def test_bulk_create_invalid_authors(self):
invalid_authors_names = [
self.existing_author.name, '', ' ', '\t', None
]
for author_name in invalid_authors_names:
with self.subTest(author_name=author_name):
with self.assertRaises(ValidationError):
Author.bulk_create([author_name])
self.assertEqual(self.authors.count(), self.authors_count_before)
def import_authors_from_file_and_save_to_database(
self, filepath: str) -> List[Author]:
names = self.get_authors_names_from_file(filepath)
try:
return Author.bulk_create(names)
except ValidationError as e:
raise CommandError(e.messages)
def test_bulk_create_valid_authors(self):
new_authors_names = [
'William Shakespeare', 'William Faulkner', 'Henry James',
'Jane Austen'
]
new_authors = Author.bulk_create(new_authors_names)
self.assertEqual(self.authors.count(),
self.authors_count_before + len(new_authors))
