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#!/usr/bin/perl

use strict;
use warnings;

use Test::More;

use ok 'Cache::Ref::LRU';

foreach my $lru ( map { "Cache::Ref::Util::LRU::$_" } qw(Array List) ) {
    use_ok($lru);

    {
        my $c = Cache::Ref::LRU->new( size => 3, lru_class => $lru );

        isa_ok( $c, "Cache::Ref" );

        $c->set( foo => "blah" );
        is( $c->get("foo"), "blah", "foo in cache" );

        $c->set( bar => "lala" );
        is( $c->get("foo"), "blah", "foo still in cache" );
        is( $c->get("bar"), "lala", "bar in cache" );

        $c->set( baz => "blob" );
        is( $c->get("foo"), "blah", "foo still in cache" );
        is( $c->get("bar"), "lala", "bar still in cache" );
        is( $c->get("baz"), "blob", "baz in cache" );

        {
            my $ran = 0;
            $c->compute( baz => sub { $ran++ } );
            ok( !$ran, "did not compute" );
        }

        {
            my $ran = 0;
            $c->compute( zot => sub { $ran++; "quxx" } );
            ok( $ran, "did compute" );
        }

        is( $c->get("foo"), undef, "foo no longer in cache" );
        is( $c->get("bar"), "lala", "bar still in cache" );
        is( $c->get("baz"), "blob", "baz still in cache" );
        is( $c->get("zot"), "quxx", "zot in cache" );

        $c->hit("bar");
        is( $c->_lru->mru, "bar", "mru" );
        is( $c->_lru->lru, "baz", "lru" );

        $c->set( oi => "vey" );
        is( $c->get("foo"), undef, "foo no longer in cache" );
        is( $c->get("bar"), "lala", "bar still in cache" );
        is( $c->get("baz"), undef, "baz no longer in cache" );
        is( $c->get("zot"), "quxx", "zot still in cache" );
        is( $c->get("oi"), "vey", "oi in cache" );

        $c->set( foo => "brrr" );
        $c->set( foo => "bar" );
        $c->set( bar => "baz" );

        is( $c->get("foo"), "bar", "foo in cache" );
        is( $c->get("bar"), "baz", "bar still in cache, new value" );
        is( $c->get("baz"), undef, "baz no longer in cache" );
        is( $c->get("zot"), undef, "zot no longer in cache" );
        is( $c->get("oi"), "vey", "oi still in cache" );

        is_deeply( [ $c->get(qw(foo bar nothere)) ], [ qw(bar baz), undef ], "mget" );

        $c->remove("oi");