def test_repository_returns_an_empty_list_for_non_existent_tag(
session_factory):
repo = SqlAlchemyRepository(session_factory)
article_ids = repo.get_article_ids_for_tag('United States')
assert len(article_ids) == 0
def test_repository_returns_article_ids_for_existing_tag(session_factory):
repo = SqlAlchemyRepository(session_factory)
article_ids = repo.get_article_ids_for_tag('Health')
assert article_ids == [1, 2]