为什么我的模拟方法没有被调用

Question

当我运行Junit测试时，Shuffletest，我得到了响应，"想要但没有调用：Shuffler.shuffle（）;"我已经看到这个问题很多次，但是据我所知，我正在做这些答案。我正在将界面实例化作为模拟，并将其注入我的甲板课上。为什么不被调用？

public enum Suit {
    SPADE("BLACK"),
    CLUB("BLACK"),
    HEART("RED"),
    DIAMOND("RED");
    private final String color;
    Suit(String color) {
        this.color = color;
    }
}
public enum Rank {
    ACE, TWO, THREE, FOUR, FIVE, SIX, 
    SEVEN, EIGHT, NINE, TEN, JACK, QUEEN, KING;
}

public class Card {
    private Suit suit;
    private Rank rank;
    public Card(Rank rank, Suit suit) {
        this.rank = rank;
        this.suit = suit;
    }
    public Suit getSuit() {
        return suit;
    }
    public Rank getRank() {
        return rank;
    }
    public String toString() {
        return suit + " of " + rank + ";"; 
    }
}
public class Deck {
    private List<Card> cards;
    private Shuffler shuffler;
    public Deck(Shuffler shuffler) {
        this.cards = new LinkedList<Card>();
        this.shuffler = shuffler;
        shuffler.shuffle(this.cards);
        System.out.println("class " + shuffler.getClass());
    }
    public void shuffle() {
        shuffler.shuffle(this.cards);
    }
    public void addCard(Card card) {
        cards.add(0, card);
    }
}
public interface Shuffler {
    public <T> void shuffle(List<T> items);
}
public class TestDeck {
    private Deck deck;
    private Shuffler mockShuffler;
    public static Deck createFullDeck(Shuffler shuffler) {
        shuffler = mock(Shuffler.class);
        Deck deck = new Deck(shuffler);
        for(Suit s : Suit.values()) {
            for(Rank r : Rank.values()) {
                deck.addCard(new Card(r, s));
            }
        }
        return deck;
    }
    @Before
    public void before() {
        mockShuffler = mock(Shuffler.class);        
        deck = createFullDeck(mockShuffler);
    }

    @Test
    public void ShuffleTest() { 
        doAnswer(new Answer<Void>() {
            public Void answer(InvocationOnMock invocation) throws Throwable {
                System.out.println("Everyday I'm Shuffling");
                return null;
            }
        }).when(mockShuffler).shuffle(Matchers.anyListOf(Card.class));
        deck.shuffle();
        verify(mockShuffler, times(1)).shuffle(Matchers.anyListOf(Card.class));
    }
}

Answer 1

您正在创建两个独立的调整对象。尝试从createFullDeck方法中删除shuffler = mock(Shuffler.class);，因为shuffler已通过。