def test_create(self):
author = Author.create(name="testName", surname="s1", patronymic="p1")
author = Author.objects.get(id=author.id)
self.assertIsInstance(author, Author)
self.assertEqual(author.name, "testName")
self.assertEqual(author.surname, "s1")
self.assertEqual(author.patronymic, "p1")
def test_createnot_valid_surname(self):
author = Author.create(name="testName",
surname="s1" * 20,
patronymic="p1")
self.assertIsNone(author)