- Fix case where CONST < FNCALL or FNCALL < CONST, when the function was marked as SEF but the args were not SEF, could result in the FNCALL being optimized out, thus failing to apply the side effects of the arguments.
- Copy the function's `min` and `max` present in the symbol table, to the node; use the node's `min` and `max` properties in the `<` operator instead of looking up the symbol and using that.
- Extend it to cover all cases where CONST < SEFexpr and SEFexpr < CONST where SEFexpr.min and SEFexpr.max are defined.
This test suite has been in use for a long time now, in place of the obsolete and unmanageable testparser.py and testfuncs.py. It verifies the complete optimizer output to stdout and stderr, to ensure that the output matches the expectations.
See unit_tests/README.txt for more info.