def test_repository_returns_an_empty_list_for_non_existent_genre(
session_factory):
repo = SqlAlchemyRepository(session_factory)
movie_ranks = repo.get_movie_ranks_for_genre('United States')
assert len(movie_ranks) == 0
def test_repository_returns_movie_ranks_for_existing_genre(session_factory):
repo = SqlAlchemyRepository(session_factory)
movie_ranks = repo.get_movie_ranks_for_genre('Action')
assert movie_ranks == [1, 5, 6, 9]
