public void CardsDatabaseTest_EnsureAllCardsHaveImages()
        {
            ResourcesService resService = new ResourcesService();

            foreach (Card card in CardsDatabase.Default.Cards)
            {
                Assert.IsNotNull(new CardInstance(card).BackgroundColor, card.Name);
                Assert.IsNotNull(new CardInstance(card).ForegroundColor, card.Name);
                Assert.IsNotNull(new CardInstance(card).RarityColor, card.Name);

                Uri imageUri = new Uri(card.ImageName, UriKind.RelativeOrAbsolute);
                Assert.IsTrue(resService.ResourceExists(imageUri), card.Name);
            }
        }