public async void All_Not_Exists() { VoteControllerMockFacade mock = new VoteControllerMockFacade(); mock.ServiceMock.Setup(x => x.All(It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <ApiVoteResponseModel> >(new List <ApiVoteResponseModel>())); VoteController controller = new VoteController(mock.ApiSettingsMoc.Object, mock.LoggerMock.Object, mock.TransactionCoordinatorMock.Object, mock.ServiceMock.Object, mock.ModelMapperMock.Object); controller.ControllerContext = new ControllerContext(); controller.ControllerContext.HttpContext = new DefaultHttpContext(); IActionResult response = await controller.All(1000, 0); response.Should().BeOfType <OkObjectResult>(); (response as OkObjectResult).StatusCode.Should().Be((int)HttpStatusCode.OK); var items = (response as OkObjectResult).Value as List <ApiVoteResponseModel>; items.Should().BeEmpty(); mock.ServiceMock.Verify(x => x.All(It.IsAny <int>(), It.IsAny <int>())); }