UPD: improved tests.

dav_events/tests/test_emails.py

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+from django.apps import apps
 from django.contrib.auth import get_user_model
 from django.core import mail as django_mail
 from django.test import TestCase
@@ -10,6 +11,12 @@ from .. import emails
 
 class EmailsTestCase(TestCase):
     def setUp(self):
+        self.email_sender = 'Automatic Software Test <root@localhost>'
+        self.email_subject_prefix = '[Test]'
+        app_config = apps.get_app_config('dav_base')
+        app_config.settings.email_sender = self.email_sender
+        app_config.settings.email_subject_prefix = self.email_subject_prefix
+
         model = get_user_model()
         self.recipient = model.objects.create_user(username='recipient@example.com',
                                                    email='recipient@example.com',
@@ -50,10 +57,18 @@ Line 3 END"""
 
         self.assertEqual(len(django_mail.outbox), 1)
         mail = django_mail.outbox[0]
+
         recipient = u'"%s" <%s>' % (self.recipient.get_full_name(), self.recipient.email)
         recipients = mail.recipients()
         self.assertIn(recipient, recipients)
         self.assertEqual(len(recipients), 1)
+
+        self.assertEqual(mail.from_email, self.email_sender)
+
+        subject = u'Veranstaltung geändert'
+        subject = u'{} {}'.format(self.email_subject_prefix, subject)
+        self.assertEqual(mail.subject, subject)
+
         self.assertIn(self.recipient.first_name, mail.body)
         self.assertIn(self.editor.get_full_name(), mail.body)
         self.assertIn(unicode(self.event), mail.body)