public void DeleteFeed_WithValidFeed_DeletesFeed()
        {
            context.Feeds.Add(new Feed { Title = "test feed 1", Url = "url" });
            context.SaveChanges();

            DataRepository underTest = new DataRepository(context);

            Feed feedToDelete = context.Feeds.First();
            underTest.DeleteFeed(feedToDelete);

            Assert.IsFalse(context.Feeds.Any(f => f.ID == feedToDelete.ID));
        }