public async void GetRecommendedAdsForUserPositive()
        {
            var ctx = _fixture.ctx;
            var advertisementRepository = new AdvertisementRepository(ctx);

            var adsForUser = await advertisementRepository.GetRecommendedAdvertisements(1, 0, 10);

            // should return 3
            // 1 for owned system (other one is inactive)
            // 1 for liked genre
            // 1 for observed users
            Assert.Equal(3, adsForUser.Count());
        }