public void TestIsValid1()
{
ICard[] cards = new ICard[5]
{
new Card(CardRank.Nine, CardSuit.Spades),
new Card(CardRank.Two, CardSuit.Hearts),
new Card(CardRank.Jack, CardSuit.Clubs),
new Card(CardRank.Two, CardSuit.Hearts),
new Card(CardRank.Five, CardSuit.Diamonds)
};
IHand hand = new Hand(cards);
bool validHand = handEvaluator.IsValid(hand);
Assert.AreEqual(false, validHand, "Hand validation does not work correctly (accepts identical cards).");
}