How to unit test a create method with unit of work implementation

I am a beginner in ASP.NET MVC. I am trying to unit test a create method that has unit of work implemented for a school project. I read many tutorials about unit testing but didn't find anything similar to my task, except another unit testing question on a create method on "stackOverflow" but I didn't know how to use that to resolve my task. Can you please guide me to the right direction. Thanks

This is a snippet of the Create method:

[HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create([Bind(Include = "Id,Code,Description")] LocationCode locationCode)
    {
        if (ModelState.IsValid)
        {
            uow.LocationCodeRepository.Insert(locationCode);

            return RedirectToAction("Index");
        }

        return View(locationCode);
    }