def test_can_not_be_associated_with_a_forum_link_or_a_forum_category(self): # Setup top_level_cat = create_category_forum() top_level_link = create_link_forum() # Run & check with pytest.raises(ValidationError): new_topic = build_topic(forum=top_level_cat, poster=self.u1) new_topic.full_clean() with pytest.raises(ValidationError): new_topic = build_topic(forum=top_level_link, poster=self.u1) new_topic.full_clean()