public async Task Handles_ValidGetRequest_DeleteFolderAsync()
{
SetUserInContext.SetContext("admin");
var result = await _folderController.DeleteFolderAsync(_model, CancellationToken.None);
var redirectedRouteSlug = (result as RedirectToRouteResult).RouteValues["slug"];
var redirectedRouteTab = (result as RedirectToRouteResult).RouteValues["tab"];
Assert.IsInstanceOf <RedirectToRouteResult>(result);
Assert.AreEqual(GroupSlugValid, redirectedRouteSlug);
Assert.AreEqual(Constants.GroupFilesTab, redirectedRouteTab);
}