BackboneJS測試與茉莉花，如果參數傳遞獲取

Question

我有一個骨幹集合，我需要傳遞一些參數到.fetch（{數據：{性別：'男'}}）。有沒有辦法用茉莉花測試參數是否通過？

在此先感謝

Answer 1

你也許可以在下面的例子中使用的方法實現這一目標。 請注意，，下面的代碼會攔截取回調用並返回，調用不會到達服務器。如果您想要進行服務器端模擬，那麼您需要使用Sinon或其他類似的方法。

describe("People collection" function() { 
     var people = Backbone.Collection.extend({ 
      // ... 
     }); 

     function searchPeople(people, data) { 
      people.fetch(data); 
     } 

     it("must verify the fetch parameters!", function(){ 
      var param = {data : {gender : 'male'}}; 
      // Set up the spy. 
      spyOn(people, 'fetch').andReturn(); // Warning: this makes the call synchronous, Fetch actually won't go through! 

      // Now perform the operation that would invoke Collection.fetch. 
      searchPeople(people, param); 

      expect(people.fetch).toHaveBeenCalled();   // Verifies the fetch was actually called. 
      expect(people.fetch).toHaveBeenCalledWith(param); // Verifies that the fetch was called with specified param. 

     }); 
    });