angularjs - エラー: Service 内から Restangular を使用する Karma では、これ以上の要求は期待されません

Question

AngularJS サービスがあり、サービス名は User です。認証に使用しています。このサービス内には、Restangular を使用して API への REST 呼び出しを行う authenticate() 関数があります。私のAngularアプリケーションでは完全に機能しています。カルマを使い始めたばかりなので、テストを含めることができます。なぜこのエラーが発生するのか不思議です。また、stackoverflow の投稿をいくつか読んだところ、spec ファイルで $httpBackend を直接使用していることに気付きました。残念ながら、それは私の設定とは異なります。

INFO [watcher]: Changed file "/Users/admin/repos/acme/acme-ui/test/spec/controllers/main.js".
Chrome 41.0.2272 (Mac OS X 10.8.3) App: CockpitApplication factory: GlobalPermissionsFactory should resolve status to 200 FAILED
    Error: Unexpected request: POST https://someinternaldomain.com/v1/authentokens
    No more request expected
        at $httpBackend (/Users/admin/repos/acme/acme-ui/app/bower_components/angular-mocks/angular-mocks.js:1224:9)
        at sendReq (/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:9538:9)
        at serverRequest (/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:9255:16)
        at processQueue (/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:13075:27)
        at /Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:13091:27
        at Scope.$eval (/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:14291:28)
        at Scope.$digest (/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:14107:31)
        at Object.<anonymous> (/Users/admin/repos/acme/acme-ui/test/spec/controllers/main.js:71:24)
Firefox 34.0.0 (Mac OS X 10.8) App: CockpitApplication factory: GlobalPermissionsFactory should resolve status to 200 FAILED
    Error: Unexpected request: POST https://someinternaldomain/v1/authentokens
    No more request expected in /Users/admin/repos/acme/acme-ui/app/bower_components/angular-mocks/angular-mocks.js (line 1224)
    $httpBackend@/Users/admin/repos/acme/acme-ui/app/bower_components/angular-mocks/angular-mocks.js:1224:1
    sendReq@/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:9538:1
    $http/serverRequest@/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:9255:16
    processQueue@/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:13075:27
    scheduleProcessQueue/<@/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:13091:27
    $RootScopeProvider/this.$get</Scope.prototype.$eval@/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:14291:16
    $RootScopeProvider/this.$get</Scope.prototype.$digest@/Users/admin/repos/acme/acme-ui/app/bower_components/angular/angular.js:14107:15
    @/Users/admin/repos/acme/acme-ui/test/spec/controllers/main.js:71:13
Chrome 41.0.2272 (Mac OS X 10.8.3): Executed 4 of 4 (1 FAILED) (0.114 secs / 0.111 secs)
Firefox 34.0.0 (Mac OS X 10.8): Executed 4 of 4 (1 FAILED) (0.101 secs / 0.092 secs)
TOTAL: 2 FAILED, 6 SUCCESS

これが私のmain.js、カルマ仕様ファイルです

describe('App: CockpitApplication', function () {

  // load the controller's module
    beforeEach(module('CockpitApplication'));

    var $controller, $q, $rootScope;
    beforeEach(inject(function(_$controller_, _$q_, _$rootScope_) {
        $controller = _$controller_;
        $q = _$q_;
        $rootScope = _$rootScope_;
    }));

    describe('factory: GlobalPermissionsFactory', function() {
        var _GlobalPermissionsFactory = null,
            _UserInformationFactory = null,
            _User = null;

        beforeEach(inject(function(GlobalPermissionsFactory) {
            _GlobalPermissionsFactory = GlobalPermissionsFactory;
        }));

        beforeEach(inject(function(UserInformationFactory) {
            _UserInformationFactory = UserInformationFactory;
        }));

        beforeEach(inject(function(User) {
            _User = User;
        }));

        it('should return false', function() {
            expect(_GlobalPermissionsFactory).toBeDefined()
        });

        it('should check if getUserInformation() exists', function() {
            expect(_UserInformationFactory.getUserInformation).toBeDefined()
        });

        it('should return a promise', function() {
            expect(_User.authenticate('admin', 'secret').then).toBeDefined();
        });

        it('should resolve status to 200', function () {
            var data;

            // set up a deferred
            var deferred = $q.defer();
            // get promise reference
            var promise = deferred.promise;

            // set up promise resolve callback
            promise.then(function (response) {
                console.log('data',data);
                data = response.status;
            });

            _User.authenticate('admin', 'secret').then(function(response) {
                // resolve our deferred with the response when it returns
                deferred.resolve(response);
            });

            // force `$digest` to resolve/reject deferreds
            $rootScope.$digest();

            // make your actual test
            expect(data).toEqual(200);

        });
    });
});