Testinggoat/ch19 1

README.md

@@ -197,4 +197,13 @@ Hasil dari mutation testing
    - timeout: 0 (0.0%)
 ```
 
-Karena mutation score dari test adalah 100%, maka tidak perlu menambahkan test case baru untuk menambahkan kualitas.
\ No newline at end of file
+Karena mutation score dari test adalah 100%, maka tidak perlu menambahkan test case baru untuk menambahkan kualitas.
+
+
+## Exercise 8
+
+### Manual Mocking (Monkeypatching) vs Mock Library
+1. Menggunakan mock library menghasilkan code yang lebih clean.
+2. Dalam mock library, cukup menggunakan decorator `patch` untuk menunjuk object yang ingin di-mock. Setelah test yang terdapat decorator tersebut dijalankan, object yang di-mock akan kembali ke bentuk awalnya sehingga tidak merubah object dalam test lain. Sementara dalam monkeypatching object tidak kembali ke keadaan awalnya sehingga dapat merusak test lain.
+3. Mock library dapat me-record behaviour dari mock object yang dipanggil.
+4. Mock library dapat me-return value spesifik dengan `return_value`, dan raise exception dengan `side_effect`.
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accounts/authentication.py

 import sys
-from accounts.models import ListUser, Token
+from accounts.models import User, Token
 
 class PasswordlessAuthenticationBackend(object):
 
     def authenticate(self, uid):
-        print('uid', uid, file=sys.stderr)
-        if not Token.objects.filter(uid=uid).exists():
-            print('no token found', file=sys.stderr)
-            return None
-        token = Token.objects.get(uid=uid)
-        print('got token', file=sys.stderr)
         try:
-            user = ListUser.objects.get(email=token.email)
-            print('got user', file=sys.stderr)
-            return user
-        except ListUser.DoesNotExist:
-            print('new user', file=sys.stderr)
-            return ListUser.objects.create(email=token.email)
-
+           token = Token.objects.get(uid=uid)
+           return User.objects.get(email=token.email)
+        except User.DoesNotExist:
+            return User.objects.create(email=token.email)
+        except Token.DoesNotExist:
+           return None
 
     def get_user(self, email):
-        return ListUser.objects.get(email=email)
\ No newline at end of file
+        try:
+            return User.objects.get(email=email)
+        except User.DoesNotExist:
+            return None
\ No newline at end of file

accounts/migrations/0001_initial.py

-# Generated by Django 2.1.7 on 2019-11-13 16:08
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.17 on 2019-11-19 09:42
+from __future__ import unicode_literals
 
 from django.db import migrations, models
 
@@ -8,7 +10,7 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ('auth', '0009_alter_user_last_name_max_length'),
+        ('auth', '0008_alter_user_username_max_length'),
     ]
 
     operations = [

accounts/migrations/0002_user.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.17 on 2019-11-20 15:18
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounts', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='User',
+            fields=[
+                ('email', models.EmailField(max_length=254, primary_key=True, serialize=False)),
+            ],
+        ),
+    ]

accounts/models.py

@@ -2,11 +2,12 @@ from django.db import models
 from django.contrib.auth.models import (
     AbstractBaseUser, BaseUserManager, PermissionsMixin
 )
+import uuid
 
 
 class Token(models.Model):
     email = models.EmailField()
-    uid = models.CharField(max_length=255)
+    uid = models.CharField(default=uuid.uuid4, max_length=40)
 
 class ListUserManager(BaseUserManager):
 
@@ -31,3 +32,10 @@ class ListUser(AbstractBaseUser, PermissionsMixin):
     def is_active(self):
         return True
 
+class User(models.Model):
+    email = models.EmailField(primary_key=True)
+
+    REQUIRED_FIELDS = []
+    USERNAME_FIELD = 'email'
+    is_anonymous = False
+    is_authenticated = True
\ No newline at end of file

accounts/tests.py

-from django.test import TestCase
-
-# Create your tests here.

accounts/tests/test_authentication.py

+from django.test import TestCase
+from django.contrib.auth import get_user_model
+from accounts.authentication import PasswordlessAuthenticationBackend
+from accounts.models import Token
+
+User = get_user_model()
+
+
+class AuthenticateTest(TestCase):
+
+    def test_returns_None_if_no_such_token(self):
+        result = PasswordlessAuthenticationBackend().authenticate(
+            'no-such-token'
+        )
+        self.assertIsNone(result)
+
+
+    def test_returns_new_user_with_correct_email_if_token_exists(self):
+        email = 'edith@example.com'
+        token = Token.objects.create(email=email)
+        user = PasswordlessAuthenticationBackend().authenticate(token.uid)
+        new_user = User.objects.get(email=email)
+        self.assertEqual(user, new_user)
+
+
+    def test_returns_existing_user_with_correct_email_if_token_exists(self):
+        email = 'edith@example.com'
+        existing_user = User.objects.create(email=email)
+        token = Token.objects.create(email=email)
+        user = PasswordlessAuthenticationBackend().authenticate(token.uid)
+        self.assertEqual(user, existing_user)
+
+
+class GetUserTest(TestCase):
+
+    def test_gets_user_by_email(self):
+        User.objects.create(email='another@example.com')
+        desired_user = User.objects.create(email='edith@example.com')
+        found_user = PasswordlessAuthenticationBackend().get_user(
+            'edith@example.com'
+        )
+        self.assertEqual(found_user, desired_user)
+
+
+    def test_returns_None_if_no_user_with_that_email(self):
+        self.assertIsNone(
+            PasswordlessAuthenticationBackend().get_user('edith@example.com')
+        )
\ No newline at end of file

accounts/tests/test_models.py

+from accounts.models import Token
+from django.test import TestCase
+from django.contrib.auth import get_user_model
+
+User = get_user_model()
+
+
+class UserModelTest(TestCase):
+
+    def test_user_is_valid_with_email_only(self):
+        user = User(email='a@b.com')
+        user.full_clean()  # should not raise
+
+class TokenModelTest(TestCase):
+
+    def test_links_user_with_auto_generated_uid(self):
+        token1 = Token.objects.create(email='a@b.com')
+        token2 = Token.objects.create(email='a@b.com')
+        self.assertNotEqual(token1.uid, token2.uid)
\ No newline at end of file

accounts/tests/test_views.py

+from django.test import TestCase
+from unittest.mock import patch, call
+from accounts.models import Token
+
+
+class SendLoginEmailViewTest(TestCase):
+    def test_redirects_to_home_page(self):
+        response = self.client.post('/accounts/send_login_email', data={
+            'email': 'edith@example.com'
+        })
+        self.assertRedirects(response, '/')
+
+    @patch('accounts.views.send_mail')
+    def test_sends_mail_to_address_from_post(self, mock_send_mail):
+        self.client.post('/accounts/send_login_email', data={
+            'email': 'edith@example.com'
+        })
+
+        self.assertEqual(mock_send_mail.called, True)
+        (subject, body, from_email, to_list), kwargs = mock_send_mail.call_args
+        self.assertEqual(subject, 'Your login link for Superlists')
+        self.assertEqual(from_email, 'noreply@superlists')
+        self.assertEqual(to_list, ['edith@example.com'])
+        
+    def test_adds_success_message(self):
+        response = self.client.post('/accounts/send_login_email', data={
+            'email': 'edith@example.com'
+        }, follow=True)
+
+        message = list(response.context['messages'])[0]
+        self.assertEqual(
+            message.message,
+            "Check your email, we've sent you a link you can use to log in."
+        )
+        self.assertEqual(message.tags, "success")
+
+@patch('accounts.views.auth')
+class LoginViewTest(TestCase):
+    def test_redirects_to_home_page(self, mock_auth):
+        response = self.client.get('/accounts/login?token=abcd123')
+        self.assertRedirects(response, '/')
+
+    
+    def test_calls_authenticate_with_uid_from_get_request(self, mock_auth):  
+        self.client.get('/accounts/login?token=abcd123')
+        self.assertEqual(
+            mock_auth.authenticate.call_args,  
+            call(uid='abcd123')  
+        )
+
+    def test_calls_auth_login_with_user_if_there_is_one(self, mock_auth):
+        response = self.client.get('/accounts/login?token=abcd123')
+        self.assertEqual(
+            mock_auth.login.call_args,  
+            call(response.wsgi_request, mock_auth.authenticate.return_value)  
+        )
+
+    def test_does_not_login_if_user_is_not_authenticated(self, mock_auth):
+        mock_auth.authenticate.return_value = None  
+        self.client.get('/accounts/login?token=abcd123')
+        self.assertEqual(mock_auth.login.called, False)  
\ No newline at end of file

accounts/urls.py

@@ -2,7 +2,7 @@ from django.conf.urls import url
 from accounts import views
 
 urlpatterns = [
-    url(r'^send_email$', views.send_login_email, name='send_login_email'),
+    url(r'^send_login_email$', views.send_login_email, name='send_login_email'),
     url(r'^login$', views.login, name='login'),
     url(r'^logout$', views.logout, name='logout'),
 ]
\ No newline at end of file

accounts/views.py

@@ -2,32 +2,37 @@ import uuid
 import sys
 from django.shortcuts import render, redirect
 from django.core.mail import send_mail
-from django.contrib.auth import authenticate
+from django.contrib import auth, messages
 from django.contrib.auth import login as auth_login, logout as auth_logout
+from django.urls import reverse
+
 
 from accounts.models import Token
 
 
 def send_login_email(request):
     email = request.POST['email']
-    uid = str(uuid.uuid4())
-    Token.objects.create(email=email, uid=uid)
-    print('saving uid', uid, 'for email', email, file=sys.stderr)
-    url = request.build_absolute_uri(f'/accounts/login?uid={uid}')
+    token = Token.objects.create(email=email)
+    url = request.build_absolute_uri(  
+        reverse('login') + '?token=' + str(token.uid)
+    )
+    message_body = f'Use this link to log in:\n\n{url}'
     send_mail(
         'Your login link for Superlists',
-        f'Use this link to log in:\n\n{url}',
+        message_body,
         'noreply@superlists',
         [email],
     )
-    return render(request, 'login_email_sent.html')
+    messages.success(
+        request,
+        "Check your email, we've sent you a link you can use to log in."
+    )
+    return redirect('/')
 
 def login(request):
-    print('login view', file=sys.stderr)
-    uid = request.GET.get('uid')
-    user = authenticate(uid=uid)
-    if user is not None:
-        auth_login(request, user)
+    user = auth.authenticate(uid=request.GET.get('token'))
+    if user:
+        auth.login(request, user)
     return redirect('/')
 
 def logout(request):

functional_tests/test_login.py

+from django.core import mail
+from selenium.webdriver.common.keys import Keys
+import re
+
+from .base import FunctionalTest
+
+TEST_EMAIL = 'edith@example.com'
+SUBJECT = 'Your login link for Superlists'
+
+
+class LoginTest(FunctionalTest):
+
+    def test_can_get_email_link_to_log_in(self):
+        # Edith goes to the awesome superlists site
+        # and notices a "Log in" section in the navbar for the first time
+        # It's telling her to enter her email address, so she does
+        self.browser.get(self.live_server_url)
+        self.browser.find_element_by_name('email').send_keys(TEST_EMAIL)
+        self.browser.find_element_by_name('email').send_keys(Keys.ENTER)
+
+        # A message appears telling her an email has been sent
+        self.wait_for(lambda: self.assertIn(
+            'Check your email',
+            self.browser.find_element_by_tag_name('body').text
+        ))
+
+        # She checks her email and finds a message
+        email = mail.outbox[0]  
+        self.assertIn(TEST_EMAIL, email.to)
+        self.assertEqual(email.subject, SUBJECT)
+
+        # It has a url link in it
+        self.assertIn('Use this link to log in', email.body)
+        url_search = re.search(r'http://.+/.+$', email.body)
+        if not url_search:
+            self.fail(f'Could not find url in email body:\n{email.body}')
+        url = url_search.group(0)
+        self.assertIn(self.live_server_url, url)
+
+        # she clicks it
+        self.browser.get(url)
+
+        # she is logged in!
+        # self.wait_for(
+        #     lambda: self.browser.find_element_by_link_text('Log out')
+        # )
+        # navbar = self.browser.find_element_by_css_selector('.navbar')
+        # self.assertIn(TEST_EMAIL, navbar.text)
\ No newline at end of file

functional_tests/test_simple_list_creation.py

@@ -17,8 +17,8 @@ class NewVisitorTest(FunctionalTest):
         self.browser.get(self.live_server_url)
         # She notices the page title and header mention to-do lists
         self.assertIn('To-Do', self.browser.title)
-        header_text = self.browser.find_element_by_tag_name('h1').text
-        self.assertIn('To-Do', header_text)
+        header_text = self.browser.find_element_by_tag_name('h2').text
+        self.assertIn('Rahmania Astrid Mochtar', header_text)
 
         # She is invited to enter a to-do item straight away
         inputbox = self.browser.find_element_by_id('id_new_item')

lists/templates/base.html

@@ -21,13 +21,29 @@
           <p>Logged in as {{ user.email }}</p>
           <p><a id="id_logout" href="{% url 'logout' %}">Log out</a></p>
         {% else %}
-          <form method="POST" action ="{% url 'send_login_email' %}">
+          <form class="navbar-form navbar-right"
+                method="POST"
+                action="{% url 'send_login_email' %}">
             Enter email to log in: <input name="email" type="text" />
             {% csrf_token %}
           </form>
         {% endif %}
       </div>
 
+      {% if messages %}
+       ​<div class="row">
+         ​<div class="col-md-8">
+           ​{% for message in messages %}
+             ​{% if message.level_tag == 'success' %}
+               ​<div class="alert alert-success">{{ message }}</div>
+             ​{% else %}
+               ​<div class="alert alert-warning">{{ message }}</div>
+             ​{% endif %}
+           ​{% endfor %}
+         ​</div>
+       ​</div>
+     ​{% endif %}
+
       ​<div class="row">
         ​<div class="col-md-6 col-md-offset-3 jumbotron">
           ​<div class="text-center">

superlists/settings.py

@@ -46,7 +46,7 @@ INSTALLED_APPS = [
     'accounts',
 ]
 
-AUTH_USER_MODEL = 'accounts.ListUser'
+AUTH_USER_MODEL = 'accounts.User'
 AUTHENTICATION_BACKENDS = [
     'accounts.authentication.PasswordlessAuthenticationBackend',
 ]