public async void All_Not_Exists()
        {
            TeacherControllerMockFacade mock = new TeacherControllerMockFacade();

            mock.ServiceMock.Setup(x => x.All(It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <ApiTeacherResponseModel> >(new List <ApiTeacherResponseModel>()));
            TeacherController controller = new TeacherController(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 <ApiTeacherResponseModel>;

            items.Should().BeEmpty();
            mock.ServiceMock.Verify(x => x.All(It.IsAny <int>(), It.IsAny <int>()));
        }