#use Test::Without::Module 'Mail::Mailer'; use Mail::Mailer; if( $INC{'Mail/Mailer.pm'} ){ warn("joy\n"); } else{ #No email alerts warn ("death\n"); } __END__ $VERSION = 0.06; $ perl -MTest::Without::Module=Mail::Mailer mod23.pl Mail/Mailer.pm did not return a true value at mod23.pl line 3. BEGIN failed--compilation aborted at mod23.pl line 3.