茉莉花测试不起作用，期待间谍时获取undefined

Question

我正在尝试使用间谍来监视何时进行functino调用。尽管如此，我无法让它与我的代码一起工作。

我的测试

  it("calls the totalBogof() function", function() { 
       spyOn(basket(), "totalBogof"); 
       basket().total(); 
       expect(basket.totalBogof).toHaveBeenCalled(); 
      }); 

的代码我想测试：

basket.prototype = { 
    total: function(){ 
     var total=0.00; 
     for(var i=0; i<shoppingBasket.length; i++){ 
      total += shoppingBasket[i].price; 
     } 
     $('#total').html('total = '+currency+total.toFixed(2)); 
     this.totalBogof(total); 
    }, 
    totalBogof: function(total){ 
     totalMinBOGOF = total - this.calcBOGOF(); 
     $('#total-bogof').html('Total - BOGOF = ' + currency + totalMinBOGOF.toFixed(2)); 
     this.totalPercentageDiscount(totalMinBOGOF, 10); 
    }, 
} 

我得到的错误是这样的：

5 specs, 1 failureSpec List | Failures 
shoppingBasket calls the totalBogof() function 
Error: Expected a spy, but got undefined. 
Error: Expected a spy, but got undefined. 
at compare  (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:3083:17) 
at Expectation.toHaveBeenCalled  (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:1480:35) 
at Object.<anonymous> (file:///C:/Users/G/shoppingbasket-jasmine/shopping-basket.js:56:47) 
at attemptSync  (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:1886:24) 
at QueueRunner.run  (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:1874:9) 
at QueueRunner.execute (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:1859:10) 
at Spec.queueRunnerFactory (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:697:35) 
at Spec.execute (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:359:10) 
at Object.fn (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:2479:37) 
at attemptAsync (https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.4.1/jasmine.js:1916:24) 

任何想法，我需要什么要解决这个问题？

Answer 1

你试过这个吗？看看间谍documentation

it("calls the totalBogof() function", function() { 
    spyOn(basket, "totalBogof"); 
    basket.total(); 
    expect(basket.totalBogof).toHaveBeenCalled(); 
});