How can I test this service in angularjs?

I want to execute a test, using karma test runner over jasmine. for knowing if the app inserts correctly in a database using cordova-sqlite-storage plugin.

I create the karma.config.js file fine, but I don’t know how test a service that injects a cordova plugin.

my service.js is this:

var app = angular.module('starter');

app.service('baseDatosService', function ($cordovaSQLite, $rootScope, localStorageService, dispositivo) {

    return {

        insertarEnBD: function (tabla, objeto) {

            var query = "INSERT INTO sesion (llaves) VALUES (?)";
            console.log(query);

            $cordovaSQLite.execute($rootScope.db, query, ["hola"]).then(function (result) {
                console.log("correcto");
            }, function (err) {
                console.log("incorrecto" + err);
            });
        },


        conectaBD: function () {
            if (window.cordova && window.SQLitePlugin) {
                $rootScope.db = window.sqlitePlugin.openDatabase({name: 'Pi.bd', location: 'default'});

            } else {
                $rootScope.db = window.openDatabase('Pi.bd', '1.0', 'Pi.db', 8 * 1024 * 1024);

            }
        },

     };

});