# File lib/quiz1/t/solutions/Moses Hohman/test_cipher.rb, line 38
                def test_card_to_letter
                        assert_equal("", Keystream.card_to_letter(Card.joker(?A)), "A joker")
                        assert_equal("", Keystream.card_to_letter(Card.joker(?B)), "B joker")
                        assert_equal("A", Keystream.card_to_letter(Card.new(Suit::CLUBS, Card::ACE)), "AC")
                        assert_equal("Z", Keystream.card_to_letter(Card.new(Suit::DIAMONDS, Card::KING)), "KD")
                        assert_equal("A", Keystream.card_to_letter(Card.new(Suit::HEARTS, Card::ACE)), "AH")
                        assert_equal("Z", Keystream.card_to_letter(Card.new(Suit::SPADES, Card::KING)), "KS")
                end