def test_assign_unsets_other_sides_single_to_multiple_link(self):
article1 = LinkedArticle(name='A1')
article2 = LinkedArticle(name='A2')
author = LinkedAuthor(name='Author', articles=[article1])
article2.author = author
article2.author = None
self.assertEqual(article2.author, None)
self.assertEqual(author.articles, [article1])
self.assertEqual(article2._unlinked_objects['author'], [author])
self.assertEqual(author._unlinked_objects['articles'], [article2])
article1 = LinkedArticle(name='A1')
article2 = LinkedArticle(name='A2')
author = LinkedAuthor(name='Author')
author.articles = [article1, article2]
author.articles = []
self.assertEqual(article1.author, None)
self.assertEqual(article2.author, None)
self.assertEqual(author.articles, [])
self.assertEqual(article1._unlinked_objects['author'], [author])
self.assertEqual(article2._unlinked_objects['author'], [author])
self.assertEqual(author._unlinked_objects['articles'],
[article1, article2])
def test_assign_sets_other_sides_single_to_multiple_link(self):
article1 = LinkedArticle(name='A1')
article2 = LinkedArticle(name='A2')
author = LinkedAuthor(name='Author', articles=[article1])
article2.author = author
self.assertEqual(article2.author, author)
self.assertEqual(author.articles, [article1, article2])
article1 = LinkedArticle(name='A1')
article2 = LinkedArticle(name='A2')
author = LinkedAuthor(name='Author')
author.articles = [article1, article2]
self.assertEqual(article1.author, author)
self.assertEqual(article2.author, author)
self.assertEqual(author.articles, [article1, article2])