__END__ Testing FETCH error for undefined value, Constraint violation: Invalid argument by main::Constrained::FETCH in lvval.pl line 50. Testing STORE error for invalid value, 'quasi', Constraint violation: Invalid argument by main::Constrained::STORE in lvval.pl line 53. Testing STORE error valid value, 'quash', foo is quash Testing modification, 'foo =~ s/h/e/', Constraint violation: Invalid argument by main::Constrained::STORE in lvval.pl line 63. Testing TIESCALAR error invalid value, 'suite', Constraint violation: Invalid argument by main::Constrained::TIESCALAR in lvval.pl line 70. Testing TIESCALAR error valid value, 'suits', baz is suits