Angularjs 如何为角工厂进行单元测试

角工厂很棒！！在编写单元测试时，我们是否应该编写单元测试有点困惑

我有以下工厂：

(function(myApp) {
myApp.factory('MyFirstFactory', function(MySecondFactory){
  function MyFirstFactory(config){
    this.value1 = 'value1';
    setDefault(this);
  }

   MyFirstFactory.doSomething = function(){
     var config = {
       findWork: true;
       myWork: MySecondFactory.doWork()
     };
     return new MyFirstFactory(config);
   };

  return MyFirstFactory;
});
})(angular.module('MyModule'));

所以对于上述工厂，我们需要为MyFirstFacotry和doSomething函数编写单元测试吗？ 如果是，我们如何利用茉莉花和因果报应来实现。。尝试了以下内容：

describe('MyFirstFactory', function() {
   var mockMyFirstFactory;
   beforeEach(function(){
     module('MyModule');
     inject(function(MyFirstFactory){
        mockMyFirstFactory = MyFirstFactory;
     });
   });

  it('MyFirstFactory should be defined', function(){
     expect(mockMyFirstFactory).toBeDefined();
  });
  it('should do something', function(){
    // how to test doSomething 
  });
});

---

我使用的是jasmine、angular mock和karma。

与所有单元测试一样，您通过测试仔细检查代码的行为。因此，如果您在调用

doSomething（）

后预期会发生某些事情，则应该进行一次测试以反映该预期

  it('should do something', function(){
    mockMyFirstFactory.doSomething(thing);
    expect(mockMyFirstFactory.somethingBool).toBe(true);
    expect(mockMyFirstFactory.somethingDone).toBe("some value");
    expect(mockMyFirstFactory.someMethod).toHaveBeenCalled();
  });

下面是我们的一个工厂的一个示例片段，我们为其构建了简单的通用设置和测试行为测试

    describe('imageUploader.imageModel module', function () {
        // VARIABLES
        var imageModel, imageModelFactory, $rootScope, sharedDataService;
        // INJECT AND SETUP DEPENDENCIES
        beforeEach(module('imageModel'));

        beforeEach(inject(function (_$rootScope_, $injector, _imageModelFactory_) {
            $rootScope = _$rootScope_;
            sharedDataService = $injector.get('sharedDataService');
            imageModelFactory = _imageModelFactory_;
            spyOn($rootScope, '$apply');
        }));
        // SET UP MOCK DATA
        beforeEach(function () {
            sharedDataService.metadata = [{metadataItemOne: "one", metadataItemTwo: "two"}];
            var loadedData = {
                name: 'test_name.jpg',
                target: {
                    result: 'fakedata12345'
                }
            };
            var fake_file = {
                data: "fakedata12345",
                fileName: loadedData.name,
                fileType: "image",
                fileSize: 1024,
                fileDate: "7-7-2015"
            };
            imageModel = imageModelFactory(fake_file, loadedData);
        });
        // TEST BEHAVIOR
        it('can get an instance of imageModelFactory', function () {
            expect(imageModelFactory).toBeDefined();
        });
        it('can instantiate an instance of imageModel', function () {
            expect(imageModel).toBeDefined();
        });
        it('can set upload state', function () {
            imageModel.setUploaded(true);
            expect(imageModel.isUploaded).toBe(true);
            expect(sharedDataService.imagesSucceeded).toBe(1);
            imageModel.setUploaded(false);
            expect(imageModel.isUploaded).toBe(false);
            expect(sharedDataService.imagesSucceeded).toBe(0);
            expect(imageModel.RelatedToUpload).toHaveBeenCalled()
        });
    }

---

如果你想知道的只是如何使用Jasmine，那么有很多文档和示例可以让你开始，就像这里一样

谢谢你的解释。在我的示例中，我想知道如何设置spy来测试在测试MyFirstFactory.doSomething时是否调用了MySecondFactory.doWork（）方法。