'``SupervisedRegistrationManager.send_admin_approve_email`` sends an
email to the site administrators'

def test_admin_approval_email(self):

    new_user = UserModel().objects.create_user(**self.user_info)
    profile = self.registration_profile.objects.create_profile(new_user)
    profile.activated = True
    self.registration_profile.objects.send_admin_approve_email(new_user, Site.objects.get_current())
    self.assertEqual(len(mail.outbox), 1)
    admins_emails = [value[1] for value in settings.ADMINS]
    for email in mail.outbox[0].to:
        self.assertIn(email, admins_emails)
