@Test
public void testSendMailFromRuediToPeterUsingTemplateContextWithoutOtherRecipients() {

    // setup
    // exercise
    MailerResult result = mailerWithTemplate.sendMailUsingTemplateContext(peter, null, null, template, ruedi);
    // verify
    assertEquals(MailerResult.OK, result.getReturnCode());
    List<OLATPrincipal> recipient = new ArrayList<OLATPrincipal>();
    recipient.add(peter);
    verifyTimesCallingCreateAndSendMessageInvocationsFor(1, recipient, null, null);
}