public void AddCardsToDeck_AmountOfCardsToBeCreated_CountOfCards(int amountToAdd)
{
//Act
deckManager.AddCardsToDeck(amountToAdd, card, deck);
//Asser
Assert.IsNotNull(deck);
Assert.IsTrue(deck.Cards.Any());
Assert.AreEqual(amountToAdd, deck.Cards.Count);
}