The Free On-line Dictionary of Computing (19 January 2023):

bang on
pound on

    (Or "pound on") To stress-test hardware or
   software.  E.g., "I banged on the simulator all	day yesterday
   and it didn't crash once.  I guess it is ready for release."

   [Jargon File]

   (2022-03-13)


The Jargon File (version 4.4.7, 29 Dec 2003):

bang on
 vt.

    To stress-test a piece of hardware or software: “I banged on the new
    version of the simulator all day yesterday and it didn't crash once. I
    guess it is ready for release.” The term pound on is synonymous.