public void TestRepoShouldNotBeCalledIfWatchIdIsNullOrEmpty(string watchId)
        {
            //Given
            var mockRepo = new Mock <IAlarmRepository>();
            var service  = new AlarmService(mockRepo.Object);

            //When
            mockRepo.Setup(mr => mr.ReadAllAlarmsWithSubs(It.IsAny <string>())).Returns(It.IsAny <List <AlarmWithSubscription> >());

            //Then
            Assert.Throws <InvalidDataException>(() => service.GetAllAlarmsWithSubs(It.IsAny <string>()));
            mockRepo.Verify(mr => mr.ReadAllAlarmsWithSubs(It.IsAny <string>()), Times.Never);
        }
        public void MethodShouldCallGetMachinesWithSubsMethodFromRepoOnce()
        {
            //Given
            var mockRepo = new Mock <IAlarmRepository>();
            var service  = new AlarmService(mockRepo.Object);
            var watchId  = "watch-id-1";

            //When
            mockRepo.Setup(mr => mr.ReadAllAlarmsWithSubs(It.IsAny <string>())).Returns(It.IsAny <List <AlarmWithSubscription> >());

            service.GetAllAlarmsWithSubs(watchId);

            //Then
            mockRepo.Verify(mr => mr.ReadAllAlarmsWithSubs(It.IsAny <string>()), Times.Once);
        }