One of my colleagues asked what if a transaction has only BEGIN TRAN and COMMIT TRAN without a ROLLBACK TRAN. I did not have a proper answer on top of my head however I could remember the behavior is depending on the SET OPTION known as XACT_ABORT.
I initially tried the below query to test the above mentioned situation. Note that I did not change the default setting of XACT_ABORT option. The default is set to OFF.