public void AlwaysTrue()
{
RollbackRuleAttribute rr = new RollbackRuleAttribute("System.Exception");
Assert.IsTrue(rr.GetDepth(typeof (SystemException)) > 0);
Assert.IsTrue(rr.GetDepth(typeof (ApplicationException)) > 0);
Assert.IsTrue(rr.GetDepth(typeof (DataException)) > 0);
Assert.IsTrue(rr.GetDepth(typeof (TransactionSystemException)) > 0);
}