public void dealer_hand_returns_null_as_face_up_card_if_only_one_card_in_hand()
{
// Arrange
var hand = new DealerHand();
var card1 = Substitute.For<IBlackjackCard>();
hand.AddCard(card1);
// Act
var faceUpCard = hand.GetFaceUpCard();
// Assert
faceUpCard.Should().Be.Null();
}
public void dealer_hand_returns_second_card_as_face_up_card()
{
// Arrange
var hand = new DealerHand();
var card1 = Substitute.For<IBlackjackCard>();
var card2 = Substitute.For<IBlackjackCard>();
hand.AddCard(card1);
hand.AddCard(card2);
// Act
var faceUpCard = hand.GetFaceUpCard();
// Assert
faceUpCard.Should().Not.Be.Null();
faceUpCard.Should().Be.SameAs(card2);
}