def test_revision_deletion(self): self.assertEqual(Revision.query.count(), 1) # Got one from review created in setUp method new_revision = Revision() new_revision.review_id = self.review.id new_revision.text = u"Testing something else!" db.session.add(new_revision) db.session.commit() self.assertEqual(Revision.query.count(), 2) new_revision.delete() self.assertEqual(Revision.query.count(), 1)