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#!/usr/bin/perl -w
use strict;
use Test::More;
plan 'no_plan';
# Returns a list presented to it, but also returns a single
# undef if given a list of a single undef. This mimics the
# behaviour of many user-defined subs and built-ins (eg: open) that
# always return undef regardless of context.
#
# We also do an 'empty return' if no arguments are passed. This
# mimics the PBP guideline for returning nothing.
sub list_mirror {
return undef if (@_ == 1 and not defined $_[0]);
return if not @_;
return @_;
}
### autodie clobbering tests ###
eval {
list_mirror();
};
is($@, "", "No autodie, no fatality");
eval {
use autodie qw(list_mirror);
list_mirror();
};
ok($@, "Autodie fatality for empty return in void context");
eval {
list_mirror();
};
is($@, "", "No autodie, no fatality (after autodie used)");
eval {
use autodie qw(list_mirror);
list_mirror(undef);
};
ok($@, "Autodie fatality for undef return in void context");
eval {
use autodie qw(list_mirror);
my @list = list_mirror();
};
ok($@,"Autodie fatality for empty list return");
eval {
use autodie qw(list_mirror);
my @list = list_mirror(undef);
};
ok($@,"Autodie fatality for undef list return");
eval {
use autodie qw(list_mirror);
my @list = list_mirror("tada");
};
ok(! $@,"No Autodie fatality for defined list return");
eval {
use autodie qw(list_mirror);
my $single = list_mirror("tada");
};
ok(! $@,"No Autodie fatality for defined scalar return");
eval {
use autodie qw(list_mirror);
my $single = list_mirror(undef);
};
ok($@,"Autodie fatality for undefined scalar return");
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