public void ModifyFeed_WithValidFeed_ModifiesAndSavesChangesToFeed() { context.Feeds.Add(new Feed { Title = "test feed 1", Url = "url" }); context.SaveChanges(); DataRepository underTest = new DataRepository(context); Feed feedToModify = context.Feeds.First(); feedToModify.Title += " MODIFIED"; underTest.ModifyFeed(feedToModify); var feedTitleProperty = context.Entry(feedToModify).Property(f => f.Title); Assert.AreEqual(feedTitleProperty.CurrentValue, feedTitleProperty.OriginalValue); }