tests.py

# -*- coding: utf-8 -*-
"""
Created on Mon Apr 27 18:41:15 2020

@author: ankit
"""


from datetime import datetime, timedelta
import unittest
from flaskApp import app,db
from flaskApp.models import User, Post

class UserModelCase(unittest.TestCase):
    def setUp(self):
        app.config['SQLALCHEMY_DATABASE_URI']='sqlite://'
        db.create_all()
        
    def tearDown(self):
        db.session.remove()
        db.drop_all()
        
    def test_password_hashing(self):
        u=User(username='susan')
        u.set_password('cat')
        self.assertFalse(u.check_password('dog'))
        self.assertTrue(u.check_password('cat'))
        
    def test_avatar(self):
        u=User(username='john', email='john@example.com')
        self.assertEqual(u.avatar(128),('https://www.gravatar.com/avatar/'
                                         'd4c74594d841139328695756648b6bd6'
                                         '?d=identicon&s=128'))
    
    def test_follow(self):
        u1=User(username='john',email='john@example.com')
        u2=User(username='susan',email='susan@example.com')
        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='username', email='john@example.com')
        u2=User(username='susan', email='susan@example.com')
        u3=User(username='mary', email='mary@example.com')
        u4=User(username='david', email='david@example.com')
        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])
        
if __name__ =='__main__':
    unittest.main(verbosity=2)