class TestAddBookInteractor(InteractorTestBase):
def setUp(self):
self.__persistence = Mock(Persistence)
self.__target = AddBookInteractor(self.__persistence)
def test_is_instance_of_interactor(self):
self.assertIsInstance(self.__target, Interactor)
def test_execute_gets_book_from_persistence(self):
self.__persistence.get_book_by_title_and_author = Mock(return_value=(self.__get_book()))
self.__target.execute(Book())
self.assertTrue(self.__persistence.get_book_by_title_and_author.called)
def test_execute_with_new_book_adds_it(self):
self.__persistence.get_book_by_title_and_author = Mock(return_value=Book())
self.__target.execute(Book())
self.assert_called(self.__persistence.add_book)
def test_execute_with_existing_book_does_not_add_it(self):
self.__persistence.get_book_by_title_and_author = Mock(return_value=(self.__get_book()))
self.__target.execute(self.__get_book())
self.assert_not_called(self.__persistence.add_book)
def test_execute_with_format_adds_format(self):
self.__persistence.get_book_by_title_and_author = Mock(return_value=(self.__get_book_with_format()))
self.__persistence.format_exists = Mock(return_value=False)
self.__target.execute(self.__get_book_with_format())
self.assert_called(self.__persistence.add_book_format)
def test_execute_with_format_does_not_add_it_when_the_book_has_it(self):
self.__persistence.get_book_by_title_and_author = Mock(return_value=(self.__get_book_with_format()))
self.__persistence.format_exists = Mock(return_value=True)
self.__target.execute(self.__get_book_with_format())
self.assert_not_called(self.__persistence.add_book_format)
def __get_book_with_format(self):
b = self.__get_book()
bf = BookFormat()
bf.Format = "EPUB"
bf.Location = "/dev/null"
b.add_format(bf)
return b
def __get_book(self):
my_book = Book()
my_book.id = 1337
return my_book
def setUp(self):
self.__persistence = Mock(Persistence)
self.__target = AddBookInteractor(self.__persistence)