gaudirun.py
-v--dry-run
MessageSvc.OutputLevel = 123;
#include "override.py"
MessageSvc.OutputLevel = 123;
conf_dict = eval('\n'.join(stdout.splitlines()))
if conf_dict["MessageSvc"]["OutputLevel"] != 123:
causes.append("final value")
result["GaudiTest.expected"] = "MessageSvc.OutputLevel = 123"