public void CanGetDvdsByRating()
{
var repo = new DvdRepositoryADO();
var dvds = repo.GetDvdByRating("PG");
Assert.IsNotNull(dvds);
Assert.AreEqual(2, dvds.Count());
Assert.AreEqual("The Lion King", dvds[0].Title);
Assert.AreNotEqual("The Lion King", dvds[1].Title);
Assert.AreEqual(1992, dvds[0].ReleaseYear);
Assert.AreEqual("PG", dvds[0].Rating);
Assert.AreEqual("PG", dvds[1].Rating);
}