def test_follow(self):
u1=User(username='******',email='*****@*****.**')
u2=User(username='******',email='*****@*****.**')
db.session.add(u1)
db.session.add(u2)
db.session.commit()
self.assertEqual(u1.followed.all(),[])
self.assertEqual(u1.followers.all(),[])
u1.follow(u2)
db.session.commit()
self.assertTrue(u1.is_following(u2))
self.assertEqual(u1.followed.count(),1)
self.assertEqual(u1.followed.first().username, 'susan')
self.assertEqual(u2.followers.count(),1)
self.assertEqual(u2.followers.first().username, 'john')
u1.unfollow(u2)
db.session.commit()
self.assertFalse(u1.is_following(u2))
self.assertEqual(u1.followed.count(),0)
self.assertEqual(u2.followers.count(),0)
def test_follow_posts(self):
#create four users
u1=User(username='******', email='*****@*****.**')
u2=User(username='******', email='*****@*****.**')
u3=User(username='******', email='*****@*****.**')
u4=User(username='******', email='*****@*****.**')
db.session.add_all([u1, u2, u3, u4])
#create four posts
now = datetime.utcnow()
p1= Post(body="post from john", author=u1,
timestamp=now+timedelta(seconds=1))
p2= Post(body="post from susan", author=u2,
timestamp=now + timedelta(seconds=4))
p3= Post(body="post from mary", author=u3,
timestamp=now + timedelta(seconds=3))
p4= Post(body="post from david", author=u4,
timestamp=now + timedelta(seconds=2))
db.session.add_all([p1,p2,p3,p4])
db.session.commit()
#setiing up followers
u1.follow(u2)
u1.follow(u4)
u2.follow(u3)
u3.follow(u4)
db.session.commit()
#check the followed posts of each user
f1= u1.followed_posts().all()
f2= u2.followed_posts().all()
f3= u3.followed_posts().all()
f4= u4.followed_posts().all()
self.assertEqual(f1, [p2,p4,p1])
self.assertEqual(f2, [p2,p3])
self.assertEqual(f3, [p3,p4])
self.assertEqual(f4, [p4])