def METHOD_NAME(self):
    username = "new-tester"
    response = self.assert_user_registration(username)
    self.assertContains(
        response,
        "Your account has been created, please check your mailbox for confirmation",
    )
    registered_user = User.objects.get(username=username)
    uak = UserActivateKey.objects.get(user=registered_user)
    # Verify notification mail
    self.assertEqual(1, len(mail.outbox))
    self.assertEqual(settings.EMAIL_FROM, mail.outbox[0].from_email)
    self.assertIn(
        reverse("nitrate-activation-confirm", args=[uak.activation_key]),
        mail.outbox[0].body,
    )