public void TestServiceShouldCallRepoMethodOnce()
{
//Given
var mockRepo = new Mock<IWatchRepository>();
var service = new WatchService(mockRepo.Object);
//When
mockRepo.Setup(mr => mr.RemoveAlarmSubscriptionFromWatch(It.IsAny<AlarmWatch>()));
service.DeleteAlarmSubscriptionFromWatch(new AlarmWatch());
//Then
mockRepo.Verify(mr => mr.RemoveAlarmSubscriptionFromWatch(It.IsAny<AlarmWatch>()));
}