public void GetChannel_Return200Ok() { //arrange var serviceMock = new Mock <IChannelService>(); serviceMock.Setup(c => c.GetChannels()) .Returns(ServiceResult <IEnumerable <ChannelModel> > .SuccessResult( Enumerable.Empty <ChannelModel>())); var controller = new ChannelsController(serviceMock.Object); //act var response = controller.Get(); //assert Assert.IsType <OkObjectResult>(response); }