def test_follows(self):
u1 = User(email='*****@*****.**', password='******')
u2 = User(email='*****@*****.**', password='******')
db.session.add(u1)
db.session.add(u2)
db.session.commit()
self.assertFalse(u1.is_following(u2))
self.assertFalse(u1.is_followed_by(u2))
timestamp_before = datetime.utcnow()
u1.follow(u2)
db.session.add(u1)
db.session.commit()
timestamp_after = datetime.utcnow()
self.assertTrue(u1.is_following(u2))
self.assertFalse(u1.is_followed_by(u2))
self.assertTrue(u2.is_followed_by(u1))
self.assertTrue(u1.followed.count() == 2)
self.assertTrue(u2.followers.count() == 2)
f = u1.followed.all()[-1]
self.assertTrue(f.followed == u2)
self.assertTrue(timestamp_before <= f.timestamp <= timestamp_after)
f = u2.followers.all()[-1]
self.assertTrue(f.follower == u1)
u1.unfollow(u2)
db.session.add(u1)
db.session.commit()
self.assertTrue(u1.followed.count() == 1)
self.assertTrue(u2.followers.count() == 1)
self.assertTrue(Follow.query.count() == 2)
u2.follow(u1)
db.session.add(u1)
db.session.add(u2)
db.session.commit()
db.session.delete(u2)
db.session.commit()
self.assertTrue(Follow.query.count() == 1)
