Add tests for exception handling of rational calculation
Add tests for exception handling of rational calculation

Fixes RT#127051: https://rt.perl.org/Public/Bug/Display.html?id=127051

softmoth/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,nbrown/rakudo,salortiz/rakudo,Gnouc/rakudo,salortiz/rakudo,MasterDuke17/rakudo,lucasbuchala/rakudo,tony-o/rakudo,tony-o/rakudo,salortiz/rakudo,nbrown/rakudo,salortiz/rakudo,rakudo/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,softmoth/rakudo,salortiz/rakudo,tony-o/rakudo,Gnouc/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,softmoth/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,tbrowder/rakudo,softmoth/rakudo,rakudo/rakudo,rakudo/rakudo,rakudo/rakudo,tony-o/rakudo,tony-o/rakudo,tbrowder/rakudo,softmoth/rakudo,tbrowder/rakudo,rakudo/rakudo,salortiz/rakudo,labster/rakudo,nbrown/rakudo,nbrown/rakudo,labster/rakudo,labster/rakudo,Gnouc/rakudo,rakudo/rakudo,labster/rakudo,nbrown/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,labster/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,tony-o/rakudo,labster/rakudo,lucasbuchala/rakudo,lucasbuchala/rakudo,nbrown/rakudo