替換對象屬性時出現異常beahviour

我正在使用摩卡來針對新寫入的類運行測試，並且需要構建一個Event以進行比較。我計劃使用對象存根，並將它們替換爲Event類的實際實例，這些實例由於數據庫連接使用而具有異步構造函數。所以我使用遞歸調用來按順序處理存根。這裏是問題：所有我的存根（stub）對象都被最新的實例取代，我不知道爲什麼。請解釋我錯在哪裏。替換對象屬性時出現異常beahviour

Event.coffee：

class Event 
    start = 0 
    duration = 0 
    title = "" 
    atype = {} 

    constructor: (_start, _duration, _title, _atype, cb) -> 
     start = _start 
     duration = _duration 
     title = _title 

     evt = @ 
     ActivityType.find({} = 
      where: {} = 
       title: _atype 
     ).success((res) -> 
      atype = res 

      cb? evt 
     ).error(() -> 
      throw new Error "unable to assign atype '#{_atype}'" 
     ) 
# ...

Event.test.coffee：

# ... 
suite "getEventAt",() -> 
    events = 
     FREE: {} = 
      start: 0 
      duration: Day.MINUTES_PER_DAY 
      title: "Free time" 
      type: "FREE" 
     REST: {} = 
      start: 10 
      duration: 30 
      title: "rest" 
      type: "_REST" 
     FITNESS: {} = 
      start: 30 
      duration: 30 
      title: "fitness" 
      type: "_FITNESS" 
     WORK: {} = 
      start: 20 
      duration: 30 
      title: "work" 
      type: "_WORK" 

    suiteSetup (done) -> 
     buildEvent = (ki) -> 
      ks = Object.keys events 
      ((k) -> 
       v = events[k] 
       new Event v.start, v.duration, v.title, v.type, (e) -> 
        events[k] = e 
        if k == ks[ks.length-1] 
         return done?() 
        return buildEvent(ki+1) 
      )(ks[ki]) 
     buildEvent(0) 
# ...

來源

2013-10-07 ilardm

開始時間標題和atype的是類變量，從而覆蓋每次創建一個新的事件

class Event 

    constructor: (_start, _duration, _title, _atype, cb) -> 
     @start = _start 
     @duration = _duration 
     @title = _title 

     evt = @ 
     ActivityType.find({} = 
      where: {} = 
       title: _atype 
     ).success((res) => 
      @atype = res 

      cb? evt 
     ).error(() -> 
      throw new Error "unable to assign atype '#{_atype}'" 
     )

請注意成功回調時的單箭頭（請參閱：http://coffeescript.org/#fat-arrow for furth呃詳情）

來源

2013-10-07 14:32:38

替換對象屬性時出現異常beahviour

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