src/paypal/tests.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from django.contrib.auth.models import User
   6 from mock import MagicMock, Mock, patch, DEFAULT
   7 from catalogue.test_utils import WLTestCase
   8 from .models import BillingAgreement, BillingPlan
   9 from .rest import user_is_subscribed
  10 from paypalrestsdk import ResourceNotFound
  11
  12
  13 BillingPlanMock = Mock(
  14     return_value=Mock(
  15         id='some-billing-plan-id'
  16     )
  17 )
  18
  19 BillingAgreementMock = Mock(
  20     # BillingAgreement() has a .links[]
  21     return_value=MagicMock(
  22         links=[
  23             Mock(
  24                 rel="approval_url",
  25                 href="http://paypal.test/approval/"
  26             )
  27         ]
  28     ),
  29     # BillingAgreement.execute(token)
  30     execute=Mock(
  31         return_value=Mock(
  32             error=None,
  33             id='some-billing-agreement-id',
  34             plan=Mock(
  35                 payment_definitions=[
  36                     Mock(
  37                         amount={'value': '100'}
  38                     )
  39                 ]
  40             )
  41         )
  42     ),
  43     # Later we can BillingAgreement.find(...).state == 'Active'
  44     find=Mock(
  45         return_value=Mock(
  46             state='Active'
  47         )
  48     ),
  49 )
  50
  51
  52 class PaypalTests(WLTestCase):
  53     @classmethod
  54     def setUpClass(cls):
  55         cls.user = User(username='test')
  56         cls.user.set_password('test')
  57         cls.user.save()
  58
  59     @classmethod
  60     def tearDownClass(cls):
  61         cls.user.delete()
  62
  63     def test_paypal_form(self):
  64         response = self.client.get('/paypal/form/')
  65         self.assertEqual(response.status_code, 200)
  66
  67     def test_paypal_form_unauthorized(self):
  68         """Legacy flow: only allow payment for logged-in users."""
  69         response = self.client.post('/paypal/form/', {"amount": "0"})
  70         self.assertEqual(response.status_code, 403)
  71
  72     def test_paypal_form_invalid(self):
  73         """Paypal form: error on bad input."""
  74         self.client.login(username='test', password='test')
  75
  76         response = self.client.post('/paypal/form/', {"amount": "0"})
  77         self.assertEqual(response.status_code, 200)
  78         self.assertEqual(
  79             len(response.context['form'].errors['amount']),
  80             1)
  81
  82     @patch.multiple('paypalrestsdk',
  83         BillingPlan=BillingPlanMock,
  84         BillingAgreement=BillingAgreementMock,
  85     )
  86     def test_paypal_form_valid(self):
  87         """PayPal form created a BillingPlan."""
  88         self.client.login(username='test', password='test')
  89         response = self.client.post('/paypal/form/', {"amount": "100"})
  90         self.assertRedirects(response, 'http://paypal.test/approval/',
  91             fetch_redirect_response=False)
  92         self.assertEqual(BillingPlan.objects.all().count(), 1)
  93
  94         # Posting the form a second time does not create another plan.
  95         response = self.client.post('/paypal/form/', {"amount": "100"})
  96         self.assertRedirects(response, 'http://paypal.test/approval/',
  97             fetch_redirect_response=False)
  98         self.assertEqual(BillingPlan.objects.all().count(), 1)
  99
 100         # No BillingAgreement created in our DB yet.
 101         self.assertEqual(BillingAgreement.objects.all().count(), 0)
 102
 103     @patch('paypalrestsdk.BillingPlan', BillingPlanMock)
 104     def test_paypal_form_error(self):
 105         """On PayPal error, plan does not get created."""
 106         self.client.login(username='test', password='test')
 107
 108         # It can choke on BillingPlan().create().
 109         with patch('paypalrestsdk.BillingPlan', Mock(
 110                 return_value=Mock(create=Mock(return_value=None)))):
 111             response = self.client.post('/paypal/form/', {"amount": "100"})
 112             self.assertEqual(response.status_code, 200)
 113
 114         # Or it can choke on BillingPlan().activate().
 115         with patch('paypalrestsdk.BillingPlan', Mock(
 116                 return_value=Mock(activate=Mock(return_value=None)))):
 117             response = self.client.post('/paypal/form/', {"amount": "100"})
 118             self.assertEqual(response.status_code, 200)
 119
 120         # No plan is created yet.
 121         self.assertEqual(BillingPlan.objects.all().count(), 0)
 122
 123         # Or it can choke later, on BillingAgreement().create()
 124         with patch('paypalrestsdk.BillingAgreement', Mock(
 125                 return_value=Mock(create=Mock(return_value=None)))):
 126             response = self.client.post('/paypal/form/', {"amount": "100"})
 127             self.assertEqual(response.status_code, 200)
 128
 129         # But now the plan should be created.
 130         self.assertEqual(BillingPlan.objects.all().count(), 1)
 131
 132     @patch.multiple('paypalrestsdk',
 133         BillingPlan=BillingPlanMock,
 134         BillingAgreement=BillingAgreementMock,
 135     )
 136     def test_paypal_app_form_valid(self):
 137         """App form creates a BillingPlan."""
 138         self.client.login(username='test', password='test')
 139         response = self.client.post('/paypal/app-form/', {"amount": "100"})
 140         self.assertRedirects(response, 'http://paypal.test/approval/',
 141             fetch_redirect_response=False)
 142         self.assertEqual(BillingPlan.objects.all().count(), 1)
 143
 144     @patch('paypalrestsdk.BillingAgreement', BillingAgreementMock)
 145     def test_paypal_return(self):
 146         self.client.login(username='test', password='test')
 147         BillingPlan.objects.create(amount=100)
 148
 149         # No token = no agreement.
 150         response = self.client.get('/paypal/return/')
 151         self.assertEqual(response.status_code, 404)
 152         self.assertEqual(BillingAgreement.objects.all().count(), 0)
 153
 154         response = self.client.get('/paypal/return/?token=secret-token')
 155         self.assertEqual(response.status_code, 200)
 156         self.assertEqual(BillingAgreement.objects.all().count(), 1)
 157
 158         # Repeated returns will not generate further agreements.
 159         response = self.client.get('/paypal/return/?token=secret-token')
 160         self.assertEqual(response.status_code, 200)
 161         self.assertEqual(BillingAgreement.objects.all().count(), 1)
 162
 163         self.assertTrue(user_is_subscribed(self.user))
 164
 165     @patch('paypalrestsdk.BillingAgreement', BillingAgreementMock)
 166     def test_paypal_app_return(self):
 167         self.client.login(username='test', password='test')
 168         BillingPlan.objects.create(amount=100)
 169         response = self.client.get('/paypal/app-return/?token=secret-token')
 170         self.assertRedirects(response, 'wolnelekturyapp://paypal_return')
 171
 172         # Repeated returns will not generate further agreements.
 173         response = self.client.get('/paypal/app-return/?token=secret-token')
 174         self.assertRedirects(response, 'wolnelekturyapp://paypal_return')
 175         self.assertEqual(BillingAgreement.objects.all().count(), 1)
 176
 177         self.assertTrue(user_is_subscribed(self.user))
 178
 179     def test_paypal_return_error(self):
 180         self.client.login(username='test', password='test')
 181         BillingPlan.objects.create(amount=100)
 182
 183         # It can choke on BillingAgreement.execute()
 184         with patch('paypalrestsdk.BillingAgreement', Mock(
 185                 execute=Mock(return_value=Mock(id=None)))):
 186             self.client.get('/paypal/app-return/?token=secret-token')
 187             response = self.client.get('/paypal/app-return/?token=secret-token')
 188             self.assertRedirects(response, 'wolnelekturyapp://paypal_error')
 189
 190         # No agreement created in our DB if not executed successfully.
 191         self.assertEqual(BillingAgreement.objects.all().count(), 0)
 192
 193         # It can execute all right, but just not be findable later.
 194         with patch('paypalrestsdk.BillingAgreement', Mock(
 195                 execute=BillingAgreementMock.execute,
 196                 find=Mock(side_effect=ResourceNotFound(None)))):
 197             response = self.client.get('/paypal/app-return/?token=secret-token')
 198             self.assertRedirects(response, 'wolnelekturyapp://paypal_return')
 199
 200         # Now the agreement exists in our DB, but is not active.
 201         self.assertEqual([b.active for b in BillingAgreement.objects.all()], [False])
 202
 203         with patch('paypalrestsdk.BillingAgreement', Mock(
 204                 find=Mock(return_value=Mock(state='Mocked')))):
 205             self.assertFalse(user_is_subscribed(self.user))
 206
 207     def test_paypal_cancel(self):
 208         response = self.client.get('/paypal/cancel/')
 209         self.assertEqual(response.status_code, 200)