在现在的软件开发中,单元测试已经变得越来越重要了.相比程序员与测试QA的手工测试,单元测试可以在项目每次build的时候集成运行,来为程序员提供Regression Test的反馈.这在敏捷开发中为程序员提供了很重要的支持,可以很容易的进行重构. 现在的主流编程语言都有很好的对单元测试的支持, 关于JUnit和NUnit的文章也已经有很多了. 在这里,我们介绍一下如何使用QUnit对Javascript脚本进行单元测试.
在这里我们使用一个简单的扑克的例子. 首先,我们用Javascript写一个简单的扑克牌类:
var Card = function(opts) { var C = {}; C._normalizeArg = function(arg) { if (_.isString(arg)) { arg = arg.replace(/\s+/g,'').split(","); } if (!_.isArray(arg)) { arg = [arg]; } return arg; }; C.extend = function(obj) { _(C).extend(obj); return C; }; C.CardKind = { "Spade" : "spade", "Heart" : "heart", "Diamond" : "diamond", "Club" : "club", "Special" : "special" }; C.CardNum = { "Ace" : 1, "Two" : 2, "Three" : 3, "Four" : 4, "Five" : 5, "Six" : 6, "Seven" : 7, "Eight" : 8, "Nine" : 9, "Ten" : 10, "Jack" : 11, "Queen" : 12, "King" : 13, "JokerS" : 14, "Joker" : 15 }; C.Card = Class.extend({ init : function(kind, num) { this.kind = kind; this.num = num; }, name : function() { return this.kind + this.num; }, isComparable : function(card) { return this.kind == card.kind; }, compareTo : function (card) { if (this.isComparable(card)) { return this.num - card.num; } } }); C.Deck = Class.extend({ init : function(numOfDecks, includeJokers, jokersAreDifferent, cards) { this.numOfDecks = numOfDecks == undefined ? 1 : numOfDecks; this.includeJokers = includeJokers == undefined ? false : includeJokers; this.jokersAreDifferent = jokersAreDifferent == undefined ? false : jokersAreDifferent; this.cards = []; this.setup(cards); }, setup : function(cards) { if (cards == undefined) { var kinds = _.filter(C.CardKind, function(kind) {return kind != C.CardKind.Special; }); var nums = _.filter(C.CardNum, function(num) {return num <= C.CardNum.King; }); for (var i = 1; i <= this.numOfDecks; i++) { for (var kind in kinds) { for (var num in nums) { this.cards.push(new C.Card(kinds[kind], nums[num])); } } if (this.includeJokers) { if (this.jokersAreDifferent) { this.cards.push(new C.Card(C.CardKind.Special, C.CardNum.JokerS)); this.cards.push(new C.Card(C.CardKind.Special, C.CardNum.Joker)); } else { this.cards.push(new C.Card(C.CardKind.Special, C.CardNum.Joker)); this.cards.push(new C.Card(C.CardKind.Special, C.CardNum.Joker)); } } } } |
