def test_is_published_with_past_article(self):
past_article = Article(publication=timezone.now() + datetime.timedelta(days=-1))
self.assertEqual(past_article.is_published(), True)
def test_is_published_with_future_article(self):
future_article = Article(publication=timezone.now() + datetime.timedelta(days=1))
self.assertEqual(future_article.is_published(), False)
