in the dim and distant past, during the type course simulator training was part of the norm and at the end Authorsisation ment engine ground run was included.
After moving on, varying standards have applied, ranging from what ever Authorisations held included ground runs, (which included an engine type I didn't have sim or grd run time on). Too one company where not allowed under any circumstances, as had to be local staff, with recurrent traing each year on 1 type to Take off power and the other type to idle only, caused all sorts of problems, but it's there company and their procedures.
At the last company I would do all the engine runs post maintenance, while the other guy's sat on there rear ends and did nothing.
My current company has just passed me out for take off power on 1 engine type, the others not even entertained, just coming up to 20+ months with the company.