public void Redirects_to_referer_using_HTTP_REFERER_Variable()
{
var result = new RedirectToRefererResult();
var context = TestsHelper.PrepareControllerContext();
context.HttpContext.Request.ServerVariables.Add("HTTP_REFERER", "tuna");
result.ExecuteResult(context);
context.HttpContext.Response.AssertWasCalled(x => x.Redirect("tuna", true));
}