AngularJS Jasmine spy 提供工厂和调用

Question

我想提供我自己的功能来替换工厂，我还希望能够使用.and.callThrough() 来使用原始功能。我遇到的主要问题是我无法将工厂注入到模拟模块语句中。

describe("It", function() {
    var mockFactory;

    //This works, but the original functionality is gone at this point because I'm overriding it with $provide
    beforeEach(angular.mock.module('myModule', function($provide) {
        mockFactory = jasmine.createSpy('myFactory');
        $provide.factory('myFactory', function() { return mockFactory });
    }));

    //This fails because I cant inject the actual factory into the module mock
    beforeEach(angular.mock.module('myModule', function($provide, myFactory) {
        mockFactory = jasmine.createSpy('myFactory', myFactory);
        $provide.factory('myFactory', function() { return mockFactory });
    }));

})

关于如何克服这个问题的任何想法？提前致谢！

Answer 1

您可以像这样使用$provide.decorator()：

describe('It', function() {
   var mockFactory;

   beforeEach(module('myModule', function ($provide) {
     $provide.decorator('myFactory', function ($delegate) {
       mockFactory = jasmine.createSpy('myFactory', $delegate).and.callThrough();
       return mockFactory;
     });
   }));

   it('should call through', function () {
     mockFactory('foo', 'bar');
     expect(myFactory).toHaveBeenCalled();
   });
});

希望这会有所帮助。