Jasmine unit tests function with callbacks

I want to test what happens if Meteor.logout function has error, or not. How I can test callback from Meteor.logout? How I can force pass error to callback function for tests?

I create $auth service. It is look like:

angular.module('myModule')
    .service('$auth', Auth);

function Auth($q) {
    this.logout = () => {
        let deferred = $q.defer();

        Meteor.logout((err) => {
            if(err) {
                deferred.reject(err);
            } else {
                deferred.resolve();
            }
        });

        return deferred.promise;
    };
}

Part of my tests:

describe('logout()',function() {
    var deferred;
    var error = {
        reason: 'test reason'
    };

    beforeEach(function() {
        deferred = $q.defer();
        spyOn($auth, 'logout').and.returnValue(deferred.promise);
    });

    it('should be rejected with error', function(done) {
        deferred.reject(error);

        $auth.logout().catch(function(res) {
            expect(res).toEqual(error);
            done();
        });

        $rootScope.$apply();
    });

    it('should be resolved', function(done) {
        deferred.resolve();

        $auth.logout().then(function(res) {
            expect(res).toBeUndefined(res);
            done();
        });

        $rootScope.$apply();
    });
});