public void Register_GetByUsrName_Delete()
        {
            var email   = Guid.NewGuid().ToString("N") + "@somewhere.com";
            var repos   = new RavenDbAccountRepository(_session);
            var account = new MembershipAccount
            {
                Email           = email,
                UserName        = email,
                Password        = "******",
                ProviderUserKey = "ten"
            };

            repos.Register(account);
            _session.SaveChanges();

            var user = repos.Get(email);

            Assert.NotNull(user);

            repos.Delete(email, true);
            _session.SaveChanges();
        }