public void SetCabLocationShouldUpdateCabLocation() { var location = new GeoCoordinate(12, 77); var distanceCalculator = new Mock <IDistanceCalculator>(); var cabLocationRepo = new Mock <ICabLocationRepository>(); var cabLocationService = new CabLocationService(distanceCalculator.Object, cabLocationRepo.Object); cabLocationService.SetCabLocation("3", location); cabLocationRepo.Verify(c => c.SetCabLocation("3", location)); }