#!/usr/bin/perl -w use strict; use Test::More 'no_plan'; use Fcntl; use autodie qw(sysopen); use constant NO_SUCH_FILE => "this_file_had_better_not_be_here_at_all"; my $fh; eval { sysopen($fh, $0, O_RDONLY); }; is($@, "", "sysopen can open files that exist"); like(scalar( <$fh> ), qr/perl/, "Data in file read"); eval { sysopen(my $fh2, NO_SUCH_FILE, O_RDONLY); }; isa_ok($@, 'autodie::exception', 'Opening a bad file fails with sysopen');