def test_repository_does_not_retrieve_article_for_non_existent_id(session_factory):
repo = SqlAlchemyRepository(session_factory)
articles = repo.get_articles_by_id([2, 209])
assert len(articles) == 1
assert articles[
0].title == 'Covid 19 coronavirus: US deaths double in two days, Trump says quarantine not necessary'
def test_repository_can_get_articles_by_ids(session_factory):
repo = SqlAlchemyRepository(session_factory)
articles = repo.get_articles_by_id([2, 5, 6])
assert len(articles) == 3
assert articles[
0].title == 'Covid 19 coronavirus: US deaths double in two days, Trump says quarantine not necessary'
assert articles[1].title == "Australia's first coronavirus fatality as man dies in Perth"
assert articles[2].title == 'Coronavirus: Death confirmed as six more test positive in NSW'
def test_repository_returns_an_empty_list_for_non_existent_ids(session_factory):
repo = SqlAlchemyRepository(session_factory)
articles = repo.get_articles_by_id([0, 199])
assert len(articles) == 0
