@Test
public void send_UserIsConfiguredForMailChannelAndDummyChannel_SucessForMail_FaildForDummy() throws Exception {

    doNothing().when(mailChannelMock).send(any(Subscriber.class), anyListOf(NotificationEventTO.class));
    doThrow(new MailSendException("")).when(dummyChannelMock).send(any(Subscriber.class), anyListOf(NotificationEventTO.class));
    NotifyStatistics statistics = channelChainTestObject.send(subscriber, eventTOs);
    assertEquals("Wrong number of the size", 2, statistics.getChannel2StatusMap().size());
    assertTrue(statistics.getChannel2StatusMap().get(Subscriber.Channel.EMAIL));
    assertFalse(statistics.getChannel2StatusMap().get(null));
}