public void Shuffle() { for (int i = 0; i < 30; i++) { player.Deck.AddCard(new ChillwindYeti(i)); } var originalDeck = new BaseCard[30]; player.Deck.Cards.CopyTo(originalDeck); player.Deck.Shuffle(); var shuffledDeck = new BaseCard[30]; player.Deck.Cards.CopyTo(shuffledDeck); Assert.IsFalse(originalDeck.SequenceEqual(shuffledDeck)); }