public void AddPersonToGroup_correctValues()
{
PersonController controller = new PersonController();
var actionResult = controller.AddPersonToGroup(personId, groupId) as RedirectToActionResult;
Assert.NotNull(actionResult);
Assert.Equal("ManageGroup", actionResult.ActionName);
// https://stackoverflow.com/questions/2440203/unit-testing-a-controller-in-asp-net-mvc-2-with-redirecttoaction
}