[Test]
        [ExpectedException(typeof (ConcurrentChangeException))]
        public void ConcurrentAuctionEdit()
        {
            var site1 = this.SiteFactory.LoadSite(this.GetConnectionString(), "SITO1", this.AlarmClock);
            var session2 = site1.Login("User2", "Pass2");

            var auction1 = site1.GetAuctions(false).First();
            var auction2 = site1.GetAuctions(false).First();

            auction1.BidOnAuction(session2, 1000);
            auction2.BidOnAuction(session2, 1000);
        }