@Test
public void computeWarningMessageForAddLinkCheck_shouldReturnEndgroupUsersCanCommunicate_GivenSenderIncomingAndReceiverIncoming() {

    Assert.assertEquals(CommunicationService.WARNING_ENDGROUP_USERS_CAN_COMMUNICATE,
            this.service.computeWarningMessageForAddLinkCheck(CommunicationService.Direction.INCOMING, CommunicationService.Direction.INCOMING));
}