茉莉花和巴貝爾重新引用間諜參考的方法

Question

我該如何監視一個函數，該函數是從一個對象內的引用調用的？ 我使用Jasmine 2.5.2作爲我的測試框架，並使用babel-plugin-rewire來重新連接依賴關係。

請看：

a.js

const map = { 
a, 
b, 
c 
}; 
function run(options) { 
map[options.val](); 
} 
function a() {...} 
function b() {...} 
function c() {...} 

a.spec.js

import { a, __RewireAPI__ as ARewireAPI } from './a'; 

describe('a',() => { 
    describe('run',() => { 
    const spy= jasmine.createSpy('spy').and.callFake(() => { 
     ... 
    }); 
    beforeEach(() => { 
     ARewireAPI.__Rewire__('b', spy); 
    }); 
    afterEach(() => { 
     ARewireAPI.__ResetDependency__('b'); 
    }); 
    it('calls b()',() => { 
     a.run({val: 'b'}); // doesn't call the spy because what actually being called is the reference from the map object 
    }); 
    }); 
}); 

Answer 1

好找到了解決辦法。 而不是重新連接功能重新映射像這樣的地圖：

beforeEach(() => { 
     ARewireAPI.__Rewire__('map', {b: spy}); 
    }); 
    afterEach(() => { 
     ARewireAPI.__ResetDependency__('map'); 
    });