public void EFCanSaveNewDvd()
{
var repo = new DvdRepositoryEF();
string title = "A new dvd";
int releaseYear = 2017;
string directorName = "New Director";
string ratingName = "PG-13";
string notes = "This is a brand new dvd";
repo.SaveNew(title, releaseYear, directorName, ratingName, notes);
var dvds = repo.GetAllDvd();
Assert.AreEqual(5, dvds.Count());
}