use Test::More;
use strict; use warnings FATAL => 'all';

use List::Objects::WithUtils 'array';

my $arr = array(1 .. 3);

ok $arr->exists(0), 'array->exists ok';
ok $arr->exists(1), 'array exists(1) ok';
ok $arr->exists(2), 'array exists(2) ok';
ok !$arr->exists(3), '!array->exists ok';

ok !array->exists(0),   'empty array !exists(0) ok';
ok !array->exists(-1), 'empty array !exists(-1) ok';
ok $arr->exists(-1),   'array exists(-1) ok';
ok $arr->exists(-2),   'array exists(-2) ok';
ok $arr->exists(-3),   'array exists(-3) ok';
ok !$arr->exists(-4),  'array !exists(-4) ok';

ok array(1)->exists(0), 'single-element array exists(0) ok';
ok !array(1)->exists(1), 'single-element array !exists(1) ok';
ok array(1)->exists(-1), 'single-element array exists(-1) ok';
ok !array(1)->exists(-2), 'single-element array exists(-2) ok';

done_testing