use v6-alpha;

use Test;

plan 7;

=pod

Pair list a la L<"http://www.nntp.perl.org/group/perl.perl6.language/19360">

=cut

my $list = (1 => (2 => (3 => 4)));
isa_ok($list, 'Pair');

is($list.key, 1, 'the key is 1');
isa_ok($list.value, 'Pair', '$list.value is-a Pair');
is($list.value.key, 2, 'the list.value.key is 2');
isa_ok($list.value.value, 'Pair', '$list.value.value is-a Pair');
is($list.value.value.key, 3, 'the list.value.value.key is 3');
is($list.value.value.value, 4, 'the list.value.value.value is 4');