public void GetFailCommunicationTest()
{
Mock <IDeviceRepository> deviceRepo = new Mock <IDeviceRepository>();
Mock <ITelemetryRepository> telemetryRepo = new Mock <ITelemetryRepository>();
DeviceService service = new DeviceService(deviceRepo.Object, telemetryRepo.Object);
deviceRepo.Setup(o => o.GetFailsCommunicationBetween(7, It.IsAny <int>()))
.Returns(deviceList);
IEnumerable <Device> devices = service.CheckDeviceCommunication(7, 8);
Check.That(devices).ContainsOnlyElementsThatMatch(e => e.LastCommunication < DateTime.Now.AddMinutes(-(7 * 60)));
//THEN
deviceRepo.Verify(a => a.GetFailsCommunicationBetween(7, 8), Times.Once);
}