#!perl

use strict;

BEGIN {
    if ( $] < 5.020000 ) {
        print "1..0 # SKIP: tests won't pass perls before 5.20.0 due to requirement for signatures\n";
        exit;
    }
}

use Test::More tests => 30;
BEGIN { use_ok 'Sub::Identify', ':all'; }

diag "running pure-Perl version of Sub::Identify" if $Sub::Identify::IsPurePerl;

use feature 'signatures';

no warnings 'experimental';

sub buffy ($left, $, $right)           { }
sub vamp::spike ($right, $, $, $wrong) { }
*slayer         = *buffy;
*human::william = \&vamp::spike;

is( sub_name( \&sub_name ),       'sub_name' );
is( sub_name( \&buffy ),          'buffy' );
is( sub_name( \&vamp::spike ),    'spike' );
is( sub_name( \&slayer ),         'buffy' );
is( sub_name( \&human::william ), 'spike' );

is( stash_name( \&stash_name ),     'Sub::Identify' );
is( stash_name( \&buffy ),          'main' );
is( stash_name( \&vamp::spike ),    'vamp' );
is( stash_name( \&slayer ),         'main' );
is( stash_name( \&human::william ), 'vamp' );

is( sub_fullname( \&sub_fullname ),   'Sub::Identify::sub_fullname' );
is( sub_fullname( \&buffy ),          'main::buffy' );
is( sub_fullname( \&vamp::spike ),    'vamp::spike' );
is( sub_fullname( \&slayer ),         'main::buffy' );
is( sub_fullname( \&human::william ), 'vamp::spike' );

is( join( '*', get_code_info( \&sub_fullname ) ),   'Sub::Identify*sub_fullname' );
is( join( '*', get_code_info( \&buffy ) ),          'main*buffy' );
is( join( '*', get_code_info( \&vamp::spike ) ),    'vamp*spike' );
is( join( '*', get_code_info( \&slayer ) ),         'main*buffy' );
is( join( '*', get_code_info( \&human::william ) ), 'vamp*spike' );

sub xander;
sub vamp::drusilla;
is( sub_name( \&xander ),     'xander',       'undefined subroutine' );
is( sub_fullname( \&xander ), 'main::xander', 'undefined subroutine' );
is( join( '*', get_code_info( \&xander ) ), 'main*xander', 'undefined subroutine' );
is( sub_name( \&vamp::drusilla ),     'drusilla',       'undefined subroutine' );
is( sub_fullname( \&vamp::drusilla ), 'vamp::drusilla', 'undefined subroutine' );

is( sub_name( sub ($x, $y, $z) { } ), '__ANON__' );
my $anon = sub ( $foo, $, $bar) { };
is( stash_name($anon),   'main' );
is( sub_fullname($anon), 'main::__ANON__' );
is( join( '*', get_code_info( sub { 'ah non' } ) ), 'main*__ANON__' );