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use Test::More;
use strict; use warnings FATAL => 'all';
use List::Objects::WithUtils 'array';
my $arr = array;
my $insert = $arr->insert(0 => 1);
ok $insert == $arr, 'insert returned self ok';
is_deeply
[ $arr->all ],
[ 1 ],
'insert first position on empty list ok';
$arr->insert(4 => 2);
is_deeply
[ $arr->all ],
[ 1, undef, undef, undef, 2 ],
'insert pre-filled nonexistant elems ok';
$arr->insert(3 => 3);
is_deeply
[ $arr->all ],
[ 1, undef, undef, 3, undef, 2 ],
'insert to middle ok';
$arr->insert(5 => 5);
is_deeply
[ $arr->all ],
[ 1, undef, undef, 3, undef, 5, 2 ],
'insert next-to-last ok';
$arr->insert( 7 => 7 );
is_deeply
[ $arr->all ],
[ 1, undef, undef, 3, undef, 5, 2, 7 ],
'insert last ok';
$arr->insert( 9 => 9 );
is_deeply
[ $arr->all ],
[ 1, undef, undef, 3, undef, 5, 2, 7, undef, 9 ],
'insert one-off last ok';
$arr->insert( 0 => 0 );
is_deeply
[ $arr->all ],
[ 0, 1, undef, undef, 3, undef, 5, 2, 7, undef, 9 ],
'insert first ok';
$arr->insert( 2 => 0, 1, 2 );
is_deeply
[ $arr->all ],
[ 0, 1, 0, 1, 2, undef, undef, 3, undef, 5, 2, 7, undef, 9 ],
'insert multiple ok';
done_testing;
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