public void WhenGetFormGroupErrorClassCalledWithError_ReturnEmptyString()
        {
            var controller = new EditYourDetailsController(_compositeSettings, _authService, _addressSearchService,
                                                           _dssReader, _dssWriter, _documentService, _config)
            {
                ControllerContext = new ControllerContext {
                    HttpContext = new DefaultHttpContext()
                }
            };

            var viewModel = new EditDetailsCompositeViewModel();

            viewModel.GetFormGroupErrorClass("test", controller.ViewData.ModelState).Should().BeNullOrEmpty();
        }