Enhancing test to verify whether the actual jobs finished or not

[BjarneHerland]

Let the "jobs" touch a file upon normal exit, use existence of this file as robust indication of whether jobs succeded or not.

[codecov-commenter]

Codecov Report

Merging #3119 (0f7926c) into main (2c0c38b) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3119   +/-   ##
=======================================
  Coverage   65.47%   65.47%           
=======================================
  Files         653      653           
  Lines       50802    50803    +1     
  Branches     4475     4475           
=======================================
+ Hits        33263    33265    +2     
+ Misses      16025    16024    -1     
  Partials     1514     1514           

Impacted Files	Coverage Δ
ert/data/record/_transformation.py	88.23% <0.00%> (-0.50%)	⬇️
libres/lib/res_util/thread_pool.cpp	76.92% <0.00%> (+0.16%)	⬆️
ert_gui/simulation/run_dialog.py	77.03% <0.00%> (+0.70%)	⬆️

📣 Codecov can now indicate which changes are the most critical in Pull Requests. Learn more

[lars-petter-hauge]

Agreed!