使用茉莉花间谍程序进行服务方法调用中的间谍程序

Question

我有以下控制器 ViewMeetingCtrl.js

(function () {
    'use strict';
    angular.module('MyApp').controller('ViewMeetingCtrl', ViewMeetingCtrl);

    ViewMeetingCtrl.$inject = ['$scope', '$state', '$http', '$translate', 'notificationService', 'meetingService', '$modal', 'meeting', 'attachmentService'];

    function ViewMeetingCtrl($scope, $state, $http, $translate, notificationService, meetingService, $modal, meeting, attachmentService) {
        $scope.meeting = meeting;

        $scope.cancelMeeting = cancelMeeting;

        function cancelMeeting(meetingId, companyId) {
            meetingService.sendCancelNotices(companyId, meetingId)
                .success(function () {
                    $state.go('company.view');
                });
        }      
    }
})();

我能够成功地为 cancelMeeting（） 调用spyOn，但不能通过 sendCancelNotices 方法的调用来 实现
。我想要做的是，我想测试，只要 cancelMeeting（） 被调用，它调用 sendCancelNotices（）
方法。我知道我应该使用createSpy方法来执行此操作。但是我不确定该怎么做。

下面是测试用例ViewMeetingCtrlSpec.js

describe('ViewMeetingCtrl CreateSpy --> Spying --> cancelMeeting', function () {
        var $rootScope, scope, $controller , $q  ;


        var sendCancelNoticesSpy = jasmine.createSpy('sendCancelNoticesSpy');


        beforeEach(angular.mock.module('MyApp'));

        beforeEach(inject(function ($rootScope, $controller ) {
            scope = $rootScope.$new();
            createController = function() {
                return $controller('ViewMeetingCtrl', {
                $scope: scope,
                meeting : {}
                }); 
            };
            var controller = new createController();
        }));

        it("tracks that the cancelMeeting spy was called", function() {
            //some assertion
        });

});

Answer 1

describe('ViewMeetingCtrl', function () {

    var scope, meetingService;

    beforeEach(angular.mock.module('MyApp'));

    beforeEach(inject(function ($rootScope, $controller, _meetingService_) {
        scope = $rootScope.$new();
        meetingService = _meetingService_;
        $controller('ViewMeetingCtrl', {
            $scope: scope,
            meeting : {}
        }); 
    }));

    it('should send cancel notices whan cancelMeeting is called', function() {
        var fakeHttpPromise = {
            success: function() {}
        };
        spyOn(meetingService, 'sendCancelNotices').andReturn(fakeHttpPromise);

        scope.cancelMeeting('foo', 'bar');

        expect(meetingService.sendCancelNotices).toHaveBeenCalledWith('bar', 'foo');
    });

});

我鼓励您停止依赖HTTP从服务返回的Promise。相反，只要考虑服务会返回承诺即可。这些更容易模拟，并且当您不再返回HTTP
Promise时，也不会强迫您重写控制器代码。

在您的控制器中：

    function cancelMeeting(meetingId, companyId) {
        meetingService.sendCancelNotices(companyId, meetingId)
            .then(function () {
                $state.go('company.view');
            });
    }

在您的测试中：

        var fakePromise = $q.when();
        spyOn(meetingService, 'sendCancelNotices')and.returnValue(fakePromise);

        scope.cancelMeeting('foo', 'bar');
        expect(meetingService.sendCancelNotices).toHaveBeenCalledWith('bar', 'foo');