#!./perl package Foo; BEGIN { chdir 't' if -d 't'; @INC = '../lib'; require './test.pl'; } plan 7; use constant MyClass => 'Foo::Bar::Biz::Baz'; { package Foo::Bar::Biz::Baz; 1; } for (qw(Foo Foo:: MyClass __PACKAGE__)) { eval "sub { my $_ \$obj = shift; }"; ok ! $@; # print $@ if $@; } use constant NoClass => 'Nope::Foo::Bar::Biz::Baz'; for (qw(Nope Nope:: NoClass)) { eval "sub { my $_ \$obj = shift; }"; ok $@; # print $@ if $@; }