Rolling back records created by PersistenceSpecifications in Fluent NHibernate

Question

I'm learning some Fluent NHibernate and I've run across the semi-awesome PersistenceSpecification class.

I've set it up in a unit test to verify my mappings and it works great. However, it leaves the record in the database when done. I tried throwing it in a transaction so I can rollback the changes but I get an error:

System.ObjectDisposedException: Cannot access a disposed object. Object name: 'AdoTransaction'..

Without a transaction I have to figure out the ID's of the record, retrieve them and delete them and that doesn't seem very elegant.

Any thoughts?

EDIT:

Here is the code snippet:

            var factory = GetSessionFactory();
            using (var session = factory.OpenSession())
            using (var transaction = session.BeginTransaction())
            {
                new PersistenceSpecification<TimePeriod>(session)
                        .CheckProperty(x => x.EndDate, DateTime.Today)
                        .VerifyTheMappings();
                transaction.Rollback();
            }

Answer 1

Try setting the IsolationLevel on the transaction. This snippet worked for me:

using (var trans = _session.BeginTransaction(IsolationLevel.ReadUncommitted))
{
    new PersistenceSpecification<Event>(_session)
        .CheckProperty(p => p.StartTime, new DateTime(2010, 1, 1))
        .VerifyTheMappings();
    trans.Rollback();
}