else { this.cards = cards; } var cardIndexes = new Array(); var currentIndex = -1; for (var i = 0; i < this.totalNumOfCards(); i++) { cardIndexes[i] = i; } this.currentCard = function() { return this.cards[cardIndexes[currentIndex]]; }; this.shuffle = function() { cardIndexes = _.shuffle(cardIndexes); currentIndex = -1; return this; }; this.availableNumOfCards = function() { return this.totalNumOfCards() - currentIndex - 1; }; this.getCard = function() { if (this.availableNumOfCards() > 0) { currentIndex++; return this.currentCard(); } }; this.skip = function(num) { if (this.availableNumOfCards() >= num) { currentIndex += num; } return this; } }, totalNumOfCards : function() { return this.cards.length; } }); return C; }; |
这个简单的类定义了一副扑克牌的54张牌, 和一个Deck类,提供对一副牌的生成和一些简单方法. 下面我们添加对这些方法的单元测试:
test('Card.init', function() { var C = Card(); var card = new C.Card(C.CardKind.Club, C.CardNum.Ace); QUnit.equal(card.name(), 'club1', 'card Club Ace has name club1'); var card = new C.Card(C.CardKind.Special, C.CardNum.Joker); QUnit.equal(card.name(), 'special15', 'card Special Joker has name special15'); }); test('Card.isComparable', function() { var C = Card(); var card1 = new C.Card(C.CardKind.Club, C.CardNum.Ace); var card2 = new C.Card(C.CardKind.Club, C.CardNum.Two); QUnit.equal(card1.isComparable(card2), true, 'Club Ace is comparable with Club Two'); var C = Card(); var card1 = new C.Card(C.CardKind.Club, C.CardNum.Ace); var card2 = new C.Card(C.CardKind.Heart, C.CardNum.Two); QUnit.equal(card1.isComparable(card2), false, 'Club Ace is not comparable with Heart Two'); }); test('Card.compareTo', function() { var C = Card(); var card1 = new C.Card(C.CardKind.Club, C.CardNum.Ace); var card2 = new C.Card(C.CardKind.Heart, C.CardNum.Two); QUnit.equal(card1.compareTo(card2) == undefined, true, 'Club Ace compares to Heart Two gets undefined'); var C = Card(); var card1 = new C.Card(C.CardKind.Club, C.CardNum.Ace); var card2 = new C.Card(C.CardKind.Club, C.CardNum.Two); QUnit.equal(card1.compareTo(card2) < 0, true, 'Club Ace is smaller to Club Two'); var C = Card(); var card1 = new C.Card(C.CardKind.Club, C.CardNum.Ace); var card2 = new C.Card(C.CardKind.Club, C.CardNum.Ace); QUnit.equal(card1.compareTo(card2) == 0, true, 'Club Ace equals to Club Ace'); }); test('Deck.init(numOfDecks : 1)', function() { var C = Card(); var deck = new C.Deck(); QUnit.equal(deck.totalNumOfCards(), 52, '1 deck contains 52 cards'); QUnit.equal(_.all(deck.cards, function(card) { return card.kind != C.CardKind.Special && card.num <= C.CardNum.King; }), true, 'There is no jokers'); var counts = _.countBy(deck.cards, function(card) { return card.kind; }); QUnit.equal(counts[C.CardKind.Club], 13, '13 club cards'); QUnit.equal(counts[C.CardKind.Diamond], 13, '13 diamond cards'); QUnit.equal(counts[C.CardKind.Heart], 13, '13 heart cards'); QUnit.equal(counts[C.CardKind.Spade], 13, '13 spade cards'); var counts2 = _.countBy(deck.cards, function(card) { return card.num; }); QUnit.equal(counts2[C.CardNum.Ace], 4, '4 Ace cards'); QUnit.equal(counts2[C.CardNum.Two], 4, '4 Two cards'); QUnit.equal(counts2[C.CardNum.Three], 4, '4 Three cards'); QUnit.equal(counts2[C.CardNum.Four], 4, '4 Four cards'); QUnit.equal(counts2[C.CardNum.Five], 4, '4 Five cards'); QUnit.equal(counts2[C.CardNum.Six], 4, '4 Six cards'); QUnit.equal(counts2[C.CardNum.Seven], 4, '4 Seven cards'); QUnit.equal(counts2[C.CardNum.Eight], 4, '4 Eight cards'); QUnit.equal(counts2[C.CardNum.Nine], 4, '4 Nine cards'); QUnit.equal(counts2[C.CardNum.Ten], 4, '4 Ten cards'); QUnit.equal(counts2[C.CardNum.Jack], 4, '4 Jack cards'); QUnit.equal(counts2[C.CardNum.Queen], 4, '4 Queen cards'); QUnit.equal(counts2[C.CardNum.King], 4, '4 King cards'); }); test('Deck.init with Jokers', function() { var C = Card(); var deck = new C.Deck(1, true, true); QUnit.equal(deck.totalNumOfCards(), 54, '1 deck contains 52 cards and 2 jokers'); var counts = _.countBy(deck.cards, function(card) { return card.kind; }); QUnit.equal(counts[C.CardKind.Special], 2, '2 jokers'); var counts2 = _.countBy(deck.cards, function(card) { return card.num; }); QUnit.equal(counts2[C.CardNum.JokerS], 1, '1 small joker'); QUnit.equal(counts2[C.CardNum.Joker], 1, '1 big joker'); var C = Card(); var deck = new C.Deck(1, true, false); QUnit.equal(deck.totalNumOfCards(), 54, '1 deck contains 52 cards and 2 jokers'); var counts = _.countBy(deck.cards, function(card) { return card.kind; }); QUnit.equal(counts[C.CardKind.Special], 2, '2 jokers'); var counts2 = _.countBy(deck.cards, function(card) { return card.num; }); QUnit.equal(counts2[C.CardNum.JokerS], undefined, 'there is no small joker'); QUnit.equal(counts2[C.CardNum.Joker], 2, '2 big jokers'); }); test('Deck.utilities', function() { var C = Card(); var deck = new C.Deck(); QUnit.equal(deck.currentCard() == undefined, true, "call current card without getting the first card gets no card"); QUnit.equal(deck.availableNumOfCards(), deck.totalNumOfCards(), "all cards are available"); QUnit.equal(deck.getCard() == deck.cards[0], true, "getCard gets the first card without shuffle"); QUnit.equal(deck.getCard().compareTo(deck.cards[1]), 0, "getCard call again gets the second card without shuffle using compareTo"); QUnit.equal(deck.shuffle() instanceof C.Deck, true, "shuffle function returns the deck back"); QUnit.equal(deck.availableNumOfCards(), deck.totalNumOfCards(), "after shuffle, the deck is reset"); QUnit.equal(deck.skip(deck.totalNumOfCards()).availableNumOfCards(), 0, "skipping all cards gets no card left"); QUnit.equal(deck.getCard() == undefined, true, "call getCard with no card available gets no card"); }); |
