UPD: improved the providing of real test data.

dav_registration/tests/test_emails.py

@@ -92,7 +92,7 @@ class EmailsTestCase(EmailTestMixin, EventMixin, RegistrationMixin, TestCase):
         app_config = apps.get_app_config('dav_events')
         app_config.settings.enable_email_on_status_update = False
 
-        self.event = self.create_event()
+        self.event = self.create_event_by_model()
         self.submit_event(self.event)
         self.accept_event(self.event)
         self.confirm_publication_event(self.event)

dav_registration/tests/test_utils.py

@@ -46,7 +46,7 @@ class UtilsTestCase(RegistrationMixin, EventMixin, TestCase):
             data = common_event_data.copy()
             data['first_day'] = first_day
 
-            event = self.create_event(data)
+            event = self.create_event_by_model(data)
             self.submit_event(event)
             self.accept_event(event)