public void GivenAnIndexController_WhenCreateIsCalled_ThenTheIndexStateIsAddedToTempData() { _controller.ModelState.AddModelError("Name", "Name error"); _controller.Create(new AddIndexViewModel(1) { Name = _name, ArchiveColumn = ArchiveColumn }); Assert.That(_controller.TempData, Is.Not.Null); Assert.That(_controller.TempData["comment"], Is.Not.Null); }