this source code is causing this error : Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL

describe('BriefingPackage Manager Service Jasmine Test', function(){
it('4a. setBriefingPackageAlreadyDownloaded function test when available', function(done){ spyOn($log,"debug").and.callThrough();

    //mocking the existing context
    ebriefingBriefingPackageManagerService.context = briefingPackage;

    //initializing a new database in PouchDB
    var dbJasmine = new PouchDB("jasmine_flightRoute");
    //storing data in the database
    dbJasmine.put(briefingPackage, function() {
        //getting the eff metadata of the flight date eff
        console.log("toto");
        dataService.getEffMetadataByFlightDateFrom(dbJasmine,briefingPackage.flightId,briefingPackage.departureDate, briefingPackage.departureAirport).then(function(succ){
            //destruction of the database object after use
            console.log("test");
            dbJasmine.destroy().then(function() {
                //checking the retrieved data are consistent with our mocked data
                expect(succ._id).toEqual(briefingPackage._id);
                //getting the eff metadata from the database
                console.log("tak tak");
                done();
            });
            //error callback
        }, function(err) {
            //destruction of the database
            dbJasmine.destroy().then(function() {
                //exception thrown because the datas are certainly null
                expect(err).toBeNull();
            });
        });
    });

    var isAvailable = true;
    ebriefingBriefingPackageManagerService.setBriefingPackageAlreadyDownloaded(briefingPackage,isAvailable);
    expect($log.debug).toHaveBeenCalledWith("briefingPackageManagerService.setBriefingPackageAlreadyDownloaded START");
    expect(ebriefingBriefingPackageManagerService.briefingPackagesDownloadedStatus.availableBriefingPackage).toBeTruthy();
});

});