我寫了一個AngularJS服務，我想對其進行單元測試。angular.module('myServiceProvider', ['fooServiceProvider', 'barServiceProvider']).    factory('myService', function ($http, fooService, barService) {    this.something = function() {        // Do something with the injected services    };    return this;});我的app.js文件已注冊：angular.module('myApp', ['fooServiceProvider','barServiceProvider','myServiceProvider'])我可以測試DI是否像這樣工作：describe("Using the DI framework", function() {    beforeEach(module('fooServiceProvider'));    beforeEach(module('barServiceProvider'));    beforeEach(module('myServiceProvder'));    var service;    beforeEach(inject(function(fooService, barService, myService) {        service=myService;    }));    it("can be instantiated", function() {        expect(service).not.toBeNull();    });});這證明了可以通過DI框架創(chuàng)建服務，但是接下來我要對服務進行單元測試，這意味著要模擬注入的對象。我該怎么做呢？我嘗試將模擬對象放入模塊中，例如beforeEach(module(mockNavigationService));并將服務定義重寫為：function MyService(http, fooService, barService) {    this.somthing = function() {        // Do something with the injected services    };});angular.module('myServiceProvider', ['fooServiceProvider', 'barServiceProvider']).    factory('myService', function ($http, fooService, barService) { return new MyService($http, fooService, barService); })但是后者似乎停止了DI所創(chuàng)建的所有服務。有人知道如何模擬單元測試的注入服務嗎？